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arXiv 2025年

作者： Peille, Philippe barret, Didier Cucchetti, edoardo Albouys, Vincent Piro, Luigi simionescu, Aurora Cappi, Massimo bellouard, elise Cénac-Morthé, Céline Daniel, Christophe Pradines, Alice Finoguenov, Alexis Kelley, Richard Mas-Hesse, J. Miguel Paltani, stéphane Rauw, Gregor Rozanska, Agata svoboda, Jiri Wilms, Joern Audard, Marc bozzo, enrico Costantini, elisa Dadina, Mauro Dauser, Thomas Decourchelle, Anne den Herder, Jan-Willem Goldwurm, Andrea Jonker, Peter Markowitz, Alex Mendez, Mariano Miniutti, Giovanni Molendi, silvano Nicastro, Fabrizio Pajot, François Pointecouteau, etienne Pratt, Gabriel W. schaye, Joop Vink, Jacco Webb, Natalie bandler, simon barbera, Marco Ceballos, Maria Teresa Charles, Ivan den Hartog, Roland Doriese, W. bertrand Duval, Jean-Marc Gatti, Flavio Jackson, brian Kilbourne, Caroline Macculi, Claudio Martin, sylvain Parot, Yann Porter, Frederick Prêle, Damien Ravera, Laurent smith, stephen soucek, Jan Thibert, Tanguy Tuominen, eija Acero, Fabio ettori, stefano Grosso, Nicolas Kaastra, Jelle Mazzotta, Pasquale Miller, Jon sciortino, salvatore beaumont, sophie D’Andrea, Matteo de Plaa, Jelle eckart, Megan Gottardi, Luciano Leutenegger, Maurice Lotti, simone Molin, Alexei Natalucci, Lorenzo Adil, Muhammad Qazi Argan, Andrea Cavazzuti, elisabetta Fiorini, Mauro Khosropanah, Pourya Villegas, eduardo Medinaceli Minervini, Gabriele Perry, James Pinsard, Frederic Raulin, Desi Rigano, Manuela Roelfsema, Peter schwander, Denis Terron, santiago Torrioli, Guido Ullom, Joel Zuchniak, Monika Chaoul, Laurence Torrejon, Jose Miguel brachet, Frank Cobo, beatriz Durkin, Malcolm Fioretti, Valentina Geoffray, Hervé Jacques, Lionel Kirsch, Christian Cicero, Ugo Lo Adams, Joseph Gloaguen, emilie Gonzalez, Manuel Hull, samuel Jellyman, erik Kiviranta, Mikko sakai, Kazuhiro Taralli, emanuele Vaccaro, Davide van der Hulst, Paul van der Kuur, Jan van Leeuwen, bert-Joost van Loon, Dennis Wakeham, Nicholas Auricchio, Natalia brienza, Daniele Cheatom, Oscar Franssen, Philippe Julien, sabine Le Mer, Isabelle Moirin, D Centre National d’Etudes Spatiales Centre spatial de Toulouse 18 avenue Edouard Belin Toulouse31401 Cedex 9 France Institut de Recherche en Astrophysique et Planétologie Université de Toulouse CNRS UPS CNES 9 Avenue du Colonel Roche BP 44346 ToulouseF-31028 Cedex 4 France INAF Istituto di Astrofisica e Planetologia Spaziali Via Fosso del Cavaliere 100 Roma00133 Italy SRON Netherlands Institute for Space Research Niels Bohrweg 4 CA Leiden2333 Netherlands INAF Osservatorio di Astrofisica e Scienza dello Spazio via Gobetti 93/3 Bologna40129 Italy FI-00014 Finland NASA Goddard Space Flight Center 8800 Greenbelt Rd GreenbeltMD20771 United States CSIC-INTA Villanueva de la Cañada Madrid28692 Spain Département d’Astronomie Université de Genève Chemin d’Ecogia 16 VersoixCH-1290 Switzerland Université de Liège Institut d’Astrophysique et de Géophysique Quartier Agora Allée du 6 Août 19c LiègeB-4000 Belgium Centrum Astronomiczne im. Mikolaja Kopernika Polskiej Akademii Nauk ul. Bartycka 18 Warszawa00-716 Poland Astronomical Institute Czech Academy of Sciences Bocni II 1401/1 Praha 4CZ-14100 Czech Republic Remeis-Observatory and ECAP FAU Erlangen-Nürnberg Sternwartstr. 7 Bamberg96049 Germany Université Paris-Saclay Université Paris Cité CEA CNRS AIM Gif-sur-Yvette91191 France ParisF-75013 France Rijksuniversiteit Groningen Faculty of Science and Engineering Landleven 12 Groningen9747 AD Netherlands INAF IASF Milano Via Alfonso Corti 12 MilanoI-20133 Italy INAF Osservatorio Astronomico di Roma Via Frascati 33 Monte Porzio Catone Rome00040 Italy Leiden Observatory Leiden University PO Box 9513 LeidenNL-2300 RA Netherlands Anton Pannekoek Institute GRAPPA University of Amsterdam PO Box 94249 Amsterdam1090 GE Netherlands Università degli Studi di Palermo Dipartimento di Fisica e Chimica Via Archirafi 36 Palermo90123 Italy Edificio Juan Jordá Avenida de los Castros s/n Cantabria SantanderE-39005 Spain Univ. G

The Athena mission entered a redefinition phase in July 2022, driven by the imperative to reduce the mission cost at completion for the european space Agency below an acceptab.e.target, while maintaining the flagship nature of its science return. This notably called for a complete redesign of the X-ray Integral Field Unit (X-IFU) cryogenic architecture towards a simpler active cooling chain. Passive cooling via successive radiative panels at spacecraft level is now used to provide a 50 K thermal environment to an X-IFU owned cryostat. 4.5 K cooling is achieved via a single remote active cryocooler unit, while a multi-stage Adiabatic Demagnetization Refrigerator ensures heat lift down to the 50 mK required by the detectors. Amidst these changes, the core concept of the readout chain remains robust, employing Transition edge sensor microcalorimeters and a sQUID-based Time-Division Multiplexing scheme. Noteworthy is the introduction of a slower pixel. This enab.e. an increase in the multiplexing factor (from 34 to 48) without compromising the instrument energy resolution, hence keeping significant system margins to the new 4 eV resolution requirement. This allows reducing the number of channels by more than a factor two, and thus the resource demands on the system, while keeping a 4’ field of view (compared to 5’ before). In this article, we will give an overview of this new architecture, before detailing its anticipated performances. Finally, we will present the new X-IFU schedule, with its short term focus on demonstration activities towards a mission adoption in early 2027. Copyright © 2025, The Authors. All rights reserved.

关键词： Chains

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First measurement of the top quark pair production cross section in proton-proton collisions at s = 13.6 TeV

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Journal of High energy Physics 2023年第8期2023卷 204页

作者： Tumasyan, A. Adam, W. Andrejkovic, J.W. bergauer, T. Chatterjee, s. Damanakis, K. Dragicevic, M. escalante Del Valle, A. Hussain, P.s. Jeitler, M. Krammer, N. Lechner, L. Liko, D. Mikulec, I. schieck, J. schöfbeck, R. schwarz, D. sonawane, M. Templ, s. Waltenberger, W. Wulz, C.-e. Darwish, M.R. Janssen, T. Kello, T. Van Mechelen, P. bols, e.s. D’Hondt, J. De Moor, A. Delcourt, M. el Faham, H. Lowette, s. Morton, A. Müller, D. sahasransu, A.R. Tavernier, s. Van Doninck, W. Van Putte, s. Vannerom, D. Clerbaux, b. Dansana, s. De Lentdecker, G. Favart, L. Hohov, D. Jaramillo, J. Lee, K. Mahdavikhorrami, M. Makarenko, I. Malara, A. Paredes, s. Pétré, L. Postiau, N. Thomas, L. Vanden bemden, M. Vander Velde, C. Vanlaer, P. Dobur, D. Knolle, J. Lamb.e.ht, L. Mestdach, G. Rendón, C. samalan, A. skovpen, K. Tytgat, M. Van Den bossche, N. Vermassen, b. Wezenb.e., L. benecke, A. bruno, G. bury, F. Caputo, C. David, P. Delaere, C. Donertas, I.s. Giammanco, A. Jaffel, K. Jain, sa. Lemaitre, V. Lidrych, J. Mondal, K. Tran, T.T. Vischia, P. Wertz, s. Alves, G.A. Coelho, e. Hensel, C. Moraes, A. Rebello Teles, P. Aldá Júnior, W.L. Alves Gallo Pereira, M. barroso Ferreira Filho, M. brandao Malbouisson, H. Carvalho, W. Chinellato, J. Da Costa, e.M. Da silveira, G.G. De Jesus Damiao, D. Dos santos sousa, V. Fonseca De souza, s. Martins, J. Mora Herrera, C. Mota Amarilo, K. Mundim, L. Nogima, H. santoro, A. silva Do Amaral, s.M. sznajder, A. Thiel, M. Vilela Pereira, A. bernardes, C.A. Calligaris, L. Fernandez Perez Tomei, T.R. Gregores, e.M. Mercadante, P.G. Novaes, s.F. Orzari, b. Padula, sandra s. Aleksandrov, A. Antchev, G. Hadjiiska, R. Iaydjiev, P. Misheva, M. Rodozov, M. shopova, M. sultanov, G. Dimitrov, A. Ivanov, T. Litov, L. Pavlov, b. Petkov, P. Petrov, A. shumka, e. Keshri, s. Thakur, s. Cheng, T. Guo, Q. Javaid, T. Mittal, M. Yuan, L. bauer, G. Hu, Z. Lezki, s. Yi, K. Chen, G.M. Chen, H.s. Chen, M. Iemmi, F. Jiang, C.H. Kapoor, A. Liao, H. Liu, Z.-A. Milosevic, V. Monti, F. sharma, R. Tao, J. Wang, J. Zhang, H. Zhao, J Yerevan Physics Institute Yerevan Armenia Institut für Hochenergiephysik Vienna Austria Universiteit Antwerpen Antwerpen Belgium Vrije Universiteit Brussel Brussel Belgium Université Libre de Bruxelles Bruxelles Belgium Ghent University Ghent Belgium Université Catholique de Louvain Louvain-la-Neuve Belgium Centro Brasileiro de Pesquisas Fisicas Rio de Janeiro Brazil Universidade do Estado do Rio de Janeiro Rio de Janeiro Brazil Universidade Estadual Paulista Universidade Federal do ABC São Paulo Brazil Institute for Nuclear Research and Nuclear Energy Bulgarian Academy of Sciences Sofia Bulgaria University of Sofia Sofia Bulgaria Instituto De Alta Investigación Universidad de Tarapacá Casilla 7 D Arica Chile Beihang University Beijing China Department of Physics Tsinghua University Beijing China Institute of High Energy Physics Beijing China State Key Laboratory of Nuclear Physics and Technology Peking University Beijing China Sun Yat-Sen University Guangzhou China University of Science and Technology of China Hefei China Institute of Modern Physics and Key Laboratory of Nuclear Physics and Ion-beam Application (MOE) - Fudan University Shanghai China Zhejiang University Zhejiang Hangzhou China Universidad de Los Andes Bogota Colombia Universidad de Antioquia Medellin Colombia University of Split Faculty of Electrical Engineering Mechanical Engineering and Naval Architecture Split Croatia University of Split Faculty of Science Split Croatia Institute Rudjer Boskovic Zagreb Croatia University of Cyprus Nicosia Cyprus Charles University Prague Czech Republic Escuela Politecnica Nacional Quito Ecuador Universidad San Francisco de Quito Quito Ecuador Academy of Scientific Research and Technology of the Arab Republic of Egypt Egyptian Network of High Energy Physics Cairo Egypt Center for High Energy Physics (CHEP-FU) Fayoum University El-Fayoum Egypt National Institute of Chemical Physics and Biophysics Tallinn Estonia Department of Physics

The first measurement of the top quark pair (tt¯) production cross section in proton-proton collisions at s = 13.6 TeV is presented. Data recorded with the CMs detector at the CeRN LHC in summer 2022, corresponding to an integrated luminosity of 1.21 fb−1sup>, are analyzed. events are selected with one or two charged leptons (electrons or muons) and additional jets. A maximum likelihood fit is performed in event categories defined by the number and flavors of the leptons, the number of jets, and the number of jets identified as originating from b quarks. An inclusive tt¯ production cross section of 881 ± 23 (stat + syst) ± 20 (lumi) pb is measured, in agreement with the standard model prediction of 924−40sub>+32sup> pb. © The Author(s) 2023.

关键词： Hadron-Hadron scattering Top Physics

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Measurements of the azimuthal anisotropy of prompt and nonprompt charmonia in PbPb collisions at √sNN = 5.02 TeV

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Journal of High energy Physics 2023年第10期2023卷 115页

作者： Tumasyan, A. Adam, W. Andrejkovic, J.W. bergauer, T. Chatterjee, s. Damanakis, K. Dragicevic, M. escalante Del Valle, A. Hussain, P.s. Jeitler, M. Krammer, N. Lechner, L. Liko, D. Mikulec, I. Paulitsch, P. Pitters, F.M. schieck, J. schöfbeck, R. schwarz, D. sonawane, M. Templ, s. Waltenberger, W. Wulz, C.-e. Darwish, M.R. Janssen, T. Kello, T. Rejeb sfar, H. Van Mechelen, P. bols, e.s. D’Hondt, J. De Moor, A. Delcourt, M. el Faham, H. Lowette, s. Moortgat, s. Morton, A. Müller, D. sahasransu, A.R. Tavernier, s. Van Doninck, W. Vannerom, D. Clerbaux, b. De Lentdecker, G. Favart, L. Hohov, D. Jaramillo, J. Lee, K. Mahdavikhorrami, M. Makarenko, I. Malara, A. Paredes, s. Pétré, L. Postiau, N. Thomas, L. Vanden bemden, M. Vander Velde, C. Vanlaer, P. Dobur, D. Knolle, J. Lamb.e.ht, L. Mestdach, G. Niedziela, M. Rendón, C. Roskas, C. samalan, A. skovpen, K. Tytgat, M. Van Den bossche, N. Vermassen, b. Wezenb.e., L. benecke, A. bruno, G. bury, F. Caputo, C. David, P. Delaere, C. Donertas, I.s. Giammanco, A. Jaffel, K. Jain, sa. Lemaitre, V. Mondal, K. Taliercio, A. Tran, T.T. Vischia, P. Wertz, s. Alves, G.A. Coelho, e. Hensel, C. Moraes, A. Rebello Teles, P. Aldá Júnior, W.L. Alves Gallo Pereira, M. barroso Ferreira Filho, M. brandao Malbouisson, H. Carvalho, W. Chinellato, J. Da Costa, e.M. Da silveira, G.G. De Jesus Damiao, D. Dos santos sousa, V. Fonseca De souza, s. Martins, J. Mora Herrera, C. Mota Amarilo, K. Mundim, L. Nogima, H. santoro, A. silva Do Amaral, s.M. sznajder, A. Thiel, M. Torres Da silva De Araujo, F. Vilela Pereira, A. bernardes, C.A. Calligaris, L. Fernandez Perez Tomei, T.R. Gregores, e.M. Mercadante, P.G. Novaes, s.F. Padula, sandra s. Aleksandrov, A. Antchev, G. Hadjiiska, R. Iaydjiev, P. Misheva, M. Rodozov, M. shopova, M. sultanov, G. Dimitrov, A. Ivanov, T. Litov, L. Pavlov, b. Petkov, P. Petrov, A. shumka, e. Thakur, s. Cheng, T. Javaid, T. Mittal, M. Yuan, L. Ahmad, M. bauer, G. Hu, Z. Lezki, s. Yi, K. Chen, G.M. Chen, H.s. Chen, M. Iemmi, F. Jiang, C.H. Kapoor, A. Kou, H. Liao, H. Liu, Yerevan Physics Institute Yerevan Armenia Institut für Hochenergiephysik Vienna Austria Universiteit Antwerpen Antwerpen Belgium Vrije Universiteit Brussel Brussel Belgium Université Libre de Bruxelles Bruxelles Belgium Ghent University Ghent Belgium Université Catholique de Louvain Louvain-la-Neuve Belgium Centro Brasileiro de Pesquisas Fisicas Rio de Janeiro Brazil Universidade do Estado do Rio de Janeiro Rio de Janeiro Brazil Universidade Estadual Paulista Universidade Federal do ABC São Paulo Brazil Institute for Nuclear Research and Nuclear Energy Bulgarian Academy of Sciences Sofia Bulgaria University of Sofia Sofia Bulgaria Instituto De Alta Investigación Universidad de Tarapacá Casilla 7 D Arica Chile Beihang University Beijing China Department of Physics Tsinghua University Beijing China Institute of High Energy Physics Beijing China State Key Laboratory of Nuclear Physics and Technology Peking University Beijing China Sun Yat-Sen University Guangzhou China Institute of Modern Physics and Key Laboratory of Nuclear Physics and Ion-beam Application (MOE) — Fudan University Shanghai China Zhejiang University Zhejiang Hangzhou China Universidad de Los Andes Bogota Colombia Universidad de Antioquia Medellin Colombia University of Split Faculty of Electrical Engineering Mechanical Engineering and Naval Architecture Split Croatia University of Split Faculty of Science Split Croatia Institute Rudjer Boskovic Zagreb Croatia University of Cyprus Nicosia Cyprus Charles University Prague Czech Republic Escuela Politecnica Nacional Quito Ecuador Universidad San Francisco de Quito Quito Ecuador Academy of Scientific Research and Technology of the Arab Republic of Egypt Egyptian Network of High Energy Physics Cairo Egypt Center for High Energy Physics (CHEP-FU) Fayoum University El-Fayoum Egypt National Institute of Chemical Physics and Biophysics Tallinn Estonia Department of Physics University of Helsinki Helsinki Finland Helsinki Institut

The second-order (v 2) and third-order (v 3) Fourier coefficients describing the azimuthal anisotropy of prompt and nonprompt (from b-hadron decays) J/ψ, as well as prompt ψ(2s) mesons are measured in lead-lead coll... 详细信息

The second-order (v 2sub>) and third-order (v 3sub>) Fourier coefficients describing the azimuthal anisotropy of prompt and nonprompt (from b-hadron decays) J/ψ, as well as prompt ψ(2s) mesons are measured in lead-lead collisions at a center-of-mass energy per nucleon pair of sNN = 5.02 TeV. The analysis uses a data set corresponding to an integrated luminosity of 1.61 nb −1sup> recorded with the CMs detector. The J/ψ and ψ(2s) mesons are reconstructed using their dimuon decay channel. The v 2sub> and v 3sub> coefficients are extracted using the scalar product method and studied as functions of meson transverse momentum and collision centrality. The measured v 2sub> values for prompt J/ψ mesons are found to be larger than those for nonprompt J/ψ mesons. The prompt J/ψ v 2sub> values at high p Tsub> are found to be underpredicted by a model incorporating only parton energy loss effects in a quark-gluon plasma medium. Prompt and nonprompt J/ψ meson v 3sub> and prompt ψ(2s) v 2sub> and v 3sub> values are also reported for the first time, providing new information about heavy quark interactions in the hot and dense medium created in heavy ion collisions. [Figure not availab.e. see fulltext.] © 2023, The Author(s).

关键词： Charm Physics Collective Flow Heavy Ion experiments Quarkonium

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search for new physics in the τ lepton plus missing transverse momentum final state in proton-proton collisions at √s = 13 TeV

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Journal of High energy Physics 2023年第9期2023卷 51页

作者： Tumasyan, A. Adam, W. Andrejkovic, J.W. bergauer, T. Chatterjee, s. Damanakis, K. Dragicevic, M. escalante Del Valle, A. Hussain, P.s. Jeitler, M. Krammer, N. Lechner, L. Liko, D. Mikulec, I. Paulitsch, P. Pitters, F.M. schieck, J. schöfbeck, R. schwarz, D. sonawane, M. Templ, s. Waltenberger, W. Wulz, C.-e. Darwish, M.R. Janssen, T. Kello, T. Rejeb sfar, H. Van Mechelen, P. bols, e.s. D’Hondt, J. De Moor, A. Delcourt, M. el Faham, H. Lowette, s. Moortgat, s. Morton, A. Müller, D. sahasransu, A.R. Tavernier, s. Van Doninck, W. Vannerom, D. Clerbaux, b. De Lentdecker, G. Favart, L. Hohov, D. Jaramillo, J. Lee, K. Mahdavikhorrami, M. Makarenko, I. Malara, A. Paredes, s. Pétré, L. Postiau, N. Thomas, L. Vanden bemden, M. Vander Velde, C. Vanlaer, P. Dobur, D. Knolle, J. Lamb.e.ht, L. Mestdach, G. Rendón, C. samalan, A. skovpen, K. Tytgat, M. Van Den bossche, N. Vermassen, b. Wezenb.e., L. benecke, A. bruno, G. bury, F. Caputo, C. David, P. Delaere, C. Donertas, I.s. Giammanco, A. Jaffel, K. Jain, sa. Lemaitre, V. Mondal, K. Taliercio, A. Tran, T.T. Vischia, P. Wertz, s. Alves, G.A. Coelho, e. Hensel, C. Moraes, A. Rebello Teles, P. Aldá Júnior, W.L. Alves Gallo Pereira, M. barroso Ferreira Filho, M. brandao Malbouisson, H. Carvalho, W. Chinellato, J. Da Costa, e.M. Da silveira, G.G. De Jesus Damiao, D. Dos santos sousa, V. Fonseca De souza, s. Martins, J. Mora Herrera, C. Mota Amarilo, K. Mundim, L. Nogima, H. santoro, A. silva Do Amaral, s.M. sznajder, A. Thiel, M. Vilela Pereira, A. bernardes, C.A. Calligaris, L. Fernandez Perez Tomei, T.R. Gregores, e.M. Mercadante, P.G. Novaes, s.F. Padula, sandra s. Aleksandrov, A. Antchev, G. Hadjiiska, R. Iaydjiev, P. Misheva, M. Rodozov, M. shopova, M. sultanov, G. Dimitrov, A. Ivanov, T. Litov, L. Pavlov, b. Petkov, P. Petrov, A. shumka, e. Thakur, s. Cheng, T. Javaid, T. Mittal, M. Yuan, L. Ahmad, M. bauer, G. Hu, Z. Lezki, s. Yi, K. Chen, G.M. Chen, H.s. Chen, M. Iemmi, F. Jiang, C.H. Kapoor, A. Liao, H. Liu, Z.-A. Milosevic, V. Monti, F. sharma, R. Tao, J. Thomas-Wilsker Yerevan Physics Institute Yerevan Armenia Institut für Hochenergiephysik Vienna Austria Universiteit Antwerpen Antwerpen Belgium Vrije Universiteit Brussel Brussel Belgium Université Libre de Bruxelles Bruxelles Belgium Ghent University Ghent Belgium Université Catholique de Louvain Louvain-la-Neuve Belgium Centro Brasileiro de Pesquisas Fisicas Rio de Janeiro Brazil Universidade do Estado do Rio de Janeiro Rio de Janeiro Brazil Universidade Estadual Paulista Universidade Federal do ABC São Paulo Brazil Institute for Nuclear Research and Nuclear Energy Bulgarian Academy of Sciences Sofia Bulgaria University of Sofia Sofia Bulgaria Instituto De Alta Investigación Universidad de Tarapacá Casilla 7 D Arica Chile Beihang University Beijing China Department of Physics Tsinghua University Beijing China Institute of High Energy Physics Beijing China State Key Laboratory of Nuclear Physics and Technology Peking University Beijing China Sun Yat-Sen University Guangzhou China University of Science and Technology of China Hefei China Institute of Modern Physics and Key Laboratory of Nuclear Physics and Ion-beam Application (MOE) — Fudan University Shanghai China Zhejiang University Zhejiang Hangzhou China Universidad de Los Andes Bogota Colombia Universidad de Antioquia Medellin Colombia University of Split Faculty of Electrical Engineering Mechanical Engineering and Naval Architecture Split Croatia University of Split Faculty of Science Split Croatia Institute Rudjer Boskovic Zagreb Croatia University of Cyprus Nicosia Cyprus Charles University Prague Czech Republic Escuela Politecnica Nacional Quito Ecuador Universidad San Francisco de Quito Quito Ecuador Academy of Scientific Research and Technology of the Arab Republic of Egypt Egyptian Network of High Energy Physics Cairo Egypt Center for High Energy Physics (CHEP-FU) Fayoum University El-Fayoum Egypt National Institute of Chemical Physics and Biophysics Tallinn Estonia Department of Physics

A search for physics beyond the standard model (sM) in the final state with a hadronically decaying tau lepton and a neutrino is presented. This analysis is based on data recorded by the CMs experiment from proton-proton collisions at a center-of-mass energy of 13 TeV at the LHC, corresponding to a total integrated luminosity of 138 fb −1sup>. The transverse mass spectrum is analyzed for the presence of new physics. No significant deviation from the sM prediction is ob.e.ved. Limits are set on the production cross section of a W′ boson decaying into a tau lepton and a neutrino. Lower limits are set on the mass of the sequential sM-like heavy charged vector boson and the mass of a quantum black hole. Upper limits are placed on the couplings of a new boson to the sM fermions. Constraints are put on a nonuniversal gauge interaction model and an effective field theory model. For the first time, upper limits on the cross section of t-channel leptoquark (LQ) exchange are presented. These limits are translated into exclusion limits on the LQ mass and on its coupling in the t-channel. The sensitivity of this analysis extends into the parameter space of LQ models that attempt to explain the anomalies ob.e.ved in b meson decays. The limits presented for the various interpretations are the most stringent to date. Additionally, a model-independent limit is provided. [Figure not availab.e. see fulltext.]. © 2023, The Author(s).

关键词： beyond standard Model Hadron-Hadron scattering Tau Physics

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Measurement of the cross section of top quark-antiquark pair production in association with a W boson in proton-proton collisions at s = 13 TeV

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Journal of High energy Physics 2023年第7期2023卷 219页

作者： Tumasyan, A. Adam, W. Andrejkovic, J.W. bergauer, T. Chatterjee, s. Damanakis, K. Dragicevic, M. escalante Del Valle, A. Hussain, P.s. Jeitler, M. Krammer, N. Lechner, L. Liko, D. Mikulec, I. Paulitsch, P. Pitters, F.M. schieck, J. schöfbeck, R. schwarz, D. Templ, s. Waltenberger, W. Wulz, C.-e. Darwish, M.R. Janssen, T. Kello, T. Rejeb sfar, H. Van Mechelen, P. bols, e.s. D’Hondt, J. De Moor, A. Delcourt, M. el Faham, H. Lowette, s. Moortgat, s. Morton, A. Müller, D. sahasransu, A.R. Tavernier, s. Van Doninck, W. Vannerom, D. Clerbaux, b. De Lentdecker, G. Favart, L. Hohov, D. Jaramillo, J. Lee, K. Mahdavikhorrami, M. Makarenko, I. Malara, A. Paredes, s. Pétré, L. Postiau, N. starling, e. Thomas, L. Vanden bemden, M. Vander Velde, C. Vanlaer, P. Dobur, D. Knolle, J. Lamb.e.ht, L. Mestdach, G. Niedziela, M. Rendón, C. Roskas, C. samalan, A. skovpen, K. Tytgat, M. Van Den bossche, N. Vermassen, b. Wezenb.e., L. benecke, A. bruno, G. bury, F. Caputo, C. David, P. Delaere, C. Donertas, I.s. Giammanco, A. Jaffel, K. Jain, sa. Lemaitre, V. Mondal, K. Prisciandaro, J. Taliercio, A. Tran, T.T. Vischia, P. Wertz, s. Alves, G.A. Coelho, e. Hensel, C. Moraes, A. Rebello Teles, P. Aldá Júnior, W.L. Alves Gallo Pereira, M. barroso Ferreira Filho, M. brandao Malbouisson, H. Carvalho, W. Chinellato, J. Da Costa, e.M. Da silveira, G.G. De Jesus Damiao, D. Dos santos sousa, V. Fonseca De souza, s. Martins, J. Mora Herrera, C. Mota Amarilo, K. Mundim, L. Nogima, H. santoro, A. silva Do Amaral, s.M. sznajder, A. Thiel, M. Torres Da silva De Araujo, F. Vilela Pereira, A. bernardes, C.A. Calligaris, L. Fernandez Perez Tomei, T.R. Gregores, e.M. Mercadante, P.G. Novaes, s.F. Padula, sandra s. Aleksandrov, A. Antchev, G. Hadjiiska, R. Iaydjiev, P. Misheva, M. Rodozov, M. shopova, M. sultanov, G. Dimitrov, A. Ivanov, T. Litov, L. Pavlov, b. Petkov, P. Petrov, A. shumka, e. Thakur, s. Cheng, T. Javaid, T. Mittal, M. Yuan, L. Ahmad, M. bauer, G. Hu, Z. Lezki, s. Yi, K. Chen, G.M. Chen, H.s. Chen, M. Iemmi, F. Jiang, C.H. Kapoor, A. Kou, Yerevan Physics Institute Yerevan Armenia Institut für Hochenergiephysik Vienna Austria Universiteit Antwerpen Antwerpen Belgium Vrije Universiteit Brussel Brussel Belgium Université Libre de Bruxelles Bruxelles Belgium Ghent University Ghent Belgium Université Catholique de Louvain Louvain-la-Neuve Belgium Centro Brasileiro de Pesquisas Fisicas Rio de Janeiro Brazil Universidade do Estado do Rio de Janeiro Rio de Janeiro Brazil Universidade Estadual Paulista Universidade Federal do ABC São Paulo Brazil Institute for Nuclear Research and Nuclear Energy Bulgarian Academy of Sciences Sofia Bulgaria University of Sofia Sofia Bulgaria Instituto De Alta Investigación Universidad de Tarapacá Casilla 7 D Arica Chile Beihang University Beijing China Department of Physics Tsinghua University Beijing China Institute of High Energy Physics Beijing China State Key Laboratory of Nuclear Physics and Technology Peking University Beijing China Sun Yat-Sen University Guangzhou China Institute of Modern Physics and Key Laboratory of Nuclear Physics and Ion-beam Application (MOE) — Fudan University Shanghai China Zhejiang University Zhejiang Hangzhou China Universidad de Los Andes Bogota Colombia Universidad de Antioquia Medellin Colombia University of Split Faculty of Electrical Engineering Mechanical Engineering and Naval Architecture Split Croatia University of Split Faculty of Science Split Croatia Institute Rudjer Boskovic Zagreb Croatia University of Cyprus Nicosia Cyprus Charles University Prague Czech Republic Escuela Politecnica Nacional Quito Ecuador Universidad San Francisco de Quito Quito Ecuador Academy of Scientific Research and Technology of the Arab Republic of Egypt Egyptian Network of High Energy Physics Cairo Egypt Center for High Energy Physics (CHEP-FU) Fayoum University El-Fayoum Egypt National Institute of Chemical Physics and Biophysics Tallinn Estonia Department of Physics University of Helsinki Helsinki Finland Helsinki Institut

The production of a top quark-antiquark pair in association with a W boson (tt¯W) is measured in proton-proton collisions at a center-of-mass energy of 13 TeV. The analyzed data was recorded by the CMs experiment at the CeRN LHC and corresponds to an integrated luminosity of 138 fb−1sup>. events with two or three leptons (electrons and muons) and additional jets are selected. In events with two leptons, a multiclass neural network is used to distinguish between the signal and background processes. events with three leptons are categorized based on the number of jets and of jets originating from b quark hadronization, and the lepton charges. The inclusive tt¯W production cross section in the full phase space is measured to be 868 ± 40(stat) ± 51(syst) fb. The tt¯W+sup> and tt¯W−sup> cross sections are also measured as 553 ± 30(stat) ± 30(syst) and 343 ± 26(stat) ± 25(syst) fb, respectively, and the corresponding ratio of the two cross sections is found to be 1.61±0.15stat−0.05sub>+0.07sup>syst. The measured cross sections are larger than but consistent with the standard model predictions within two standard deviations, and represent the most precise measurement of these cross sections to date. © The Author(s) 2023.

关键词： Hadron-Hadron scattering Top Physics

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search for CP violation in t t ¯ H and tH production in multilepton channels in proton-proton collisions at √s = 13 TeV

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Journal of High energy Physics 2023年第7期2023卷 92页

作者： Tumasyan, A. Adam, W. Andrejkovic, J.W. bergauer, T. Chatterjee, s. Damanakis, K. Dragicevic, M. escalante Del Valle, A. Hussain, P.s. Jeitler, M. Krammer, N. Lechner, L. Liko, D. Mikulec, I. Paulitsch, P. Pitters, F.M. schieck, J. schöfbeck, R. schwarz, D. Templ, s. Waltenberger, W. Wulz, C.-e. Darwish, M.R. Janssen, T. Kello, T. Rejeb sfar, H. Van Mechelen, P. bols, e.s. D’Hondt, J. De Moor, A. Delcourt, M. el Faham, H. Lowette, s. Moortgat, s. Morton, A. Müller, D. sahasransu, A.R. Tavernier, s. Van Doninck, W. Vannerom, D. Clerbaux, b. De Lentdecker, G. Favart, L. Jaramillo, J. Lee, K. Mahdavikhorrami, M. Makarenko, I. Malara, A. Paredes, s. Pétré, L. Postiau, N. starling, e. Thomas, L. Vanden bemden, M. Vander Velde, C. Vanlaer, P. Dobur, D. Knolle, J. Lamb.e.ht, L. Mestdach, G. Niedziela, M. Rendón, C. Roskas, C. samalan, A. skovpen, K. Tytgat, M. Van Den bossche, N. Vermassen, b. Wezenb.e., L. benecke, A. bruno, G. bury, F. Caputo, C. David, P. Delaere, C. Donertas, I.s. Giammanco, A. Jaffel, K. Jain, sa. Lemaitre, V. Mondal, K. Prisciandaro, J. Taliercio, A. Tran, T.T. Vischia, P. Wertz, s. Alves, G.A. Coelho, e. Hensel, C. Moraes, A. Rebello Teles, P. Aldá Júnior, W.L. Alves Gallo Pereira, M. barroso Ferreira Filho, M. brandao Malbouisson, H. Carvalho, W. Chinellato, J. Da Costa, e.M. Da silveira, G.G. De Jesus Damiao, D. Dos santos sousa, V. Fonseca De souza, s. Martins, J. Mora Herrera, C. Mota Amarilo, K. Mundim, L. Nogima, H. santoro, A. silva Do Amaral, s.M. sznajder, A. Thiel, M. Torres Da silva De Araujo, F. Vilela Pereira, A. bernardes, C.A. Calligaris, L. Fernandez Perez Tomei, T.R. Gregores, e.M. Mercadante, P.G. Novaes, s.F. Padula, sandra s. Aleksandrov, A. Antchev, G. Hadjiiska, R. Iaydjiev, P. Misheva, M. Rodozov, M. shopova, M. sultanov, G. Dimitrov, A. Ivanov, T. Litov, L. Pavlov, b. Petkov, P. Petrov, A. shumka, e. Cheng, T. Javaid, T. Mittal, M. Yuan, L. Ahmad, M. bauer, G. Hu, Z. Lezki, s. Yi, K. Chen, G.M. Chen, H.s. Chen, M. Iemmi, F. Jiang, C.H. Kapoor, A. Liao, H. Liu, Z.-A. Milose Yerevan Physics Institute Yerevan Armenia Institut für Hochenergiephysik Vienna Austria Universiteit Antwerpen Antwerpen Belgium Vrije Universiteit Brussel Brussel Belgium Université Libre de Bruxelles Bruxelles Belgium Ghent University Ghent Belgium Université Catholique de Louvain Louvain-la-Neuve Belgium Centro Brasileiro de Pesquisas Fisicas Rio de Janeiro Brazil Universidade do Estado do Rio de Janeiro Rio de Janeiro Brazil Universidade Estadual Paulista Universidade Federal do ABC São Paulo Brazil Institute for Nuclear Research and Nuclear Energy Bulgarian Academy of Sciences Sofia Bulgaria University of Sofia Sofia Bulgaria Beihang University Beijing China Department of Physics Tsinghua University Beijing China Institute of High Energy Physics Beijing China State Key Laboratory of Nuclear Physics and Technology Peking University Beijing China Sun Yat-Sen University Guangzhou China Institute of Modern Physics and Key Laboratory of Nuclear Physics and Ion-beam Application (MOE) — Fudan University Shanghai China Zhejiang University Zhejiang Hangzhou China Universidad de Los Andes Bogota Colombia Universidad de Antioquia Medellin Colombia University of Split Faculty of Electrical Engineering Mechanical Engineering and Naval Architecture Split Croatia University of Split Faculty of Science Split Croatia Institute Rudjer Boskovic Zagreb Croatia University of Cyprus Nicosia Cyprus Charles University Prague Czech Republic Escuela Politecnica Nacional Quito Ecuador Universidad San Francisco de Quito Quito Ecuador Academy of Scientific Research and Technology of the Arab Republic of Egypt Egyptian Network of High Energy Physics Cairo Egypt Center for High Energy Physics (CHEP-FU) Fayoum University El-Fayoum Egypt National Institute of Chemical Physics and Biophysics Tallinn Estonia Department of Physics University of Helsinki Helsinki Finland Helsinki Institute of Physics Helsinki Finland Lappeenranta-Lahti University of Technology Lappeen

The charge-parity (CP) structure of the Yukawa interaction between the Higgs (H) boson and the top quark is measured in a data sample enriched in the t t ¯ H and tH associated production, using 138 fb −1sup> of data collected in proton-proton collisions at s = 13 TeV by the CMs experiment at the CeRN LHC. The study targets events where the H boson decays via H → WW or H → ττ and the top quarks decay via t → Wb: the W bosons decay either leptonically or hadronically, and final states characterized by the presence of at least two leptons are studied. Machine learning techniques are applied to these final states to enhance the separation of CP -even from CP -odd scenarios. Two-dimensional confidence regions are set on κ tsub> and κ~ tsub>, which are respectively defined as the CP -even and CP -odd top-Higgs Yukawa coupling modifiers. No significant fractional CP -odd contributions, parameterized by the quantity | fCPHtt | are ob.e.ved;the parameter is determined to be | fCPHtt | = 0.59 with an interval of (0.24, 0.81) at 68% confidence level. The results are combined with previous results covering the H → ZZ and H → γγ decay modes, yielding two- and one-dimensional confidence regions on κ tsub> and κ~ tsub>, while | fCPHtt | is determined to be | fCPHtt | = 0.28 with an interval of | fCPHtt | < 0.55 at 68% confidence level, in agreement with the standard model CP -even prediction of | fCPHtt | = 0. [Figure not availab.e. see fulltext.]. © 2023, The Author(s).

关键词： CP Violation Hadron-Hadron scattering Higgs Physics

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search for a vector-like quark T′ → tH via the diphoton decay mode of the Higgs boson in proton-proton collisions at √s = 13 TeV

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Journal of High energy Physics 2023年第9期2023卷 1-40页

作者： Tumasyan, A. Adam, W. Andrejkovic, J.W. bergauer, T. Chatterjee, s. Damanakis, K. Dragicevic, M. escalante Del Valle, A. Hussain, P.s. Jeitler, M. Krammer, N. Lechner, L. Liko, D. Mikulec, I. Paulitsch, P. Pitters, F.M. schieck, J. schöfbeck, R. schwarz, D. sonawane, M. Templ, s. Waltenberger, W. Wulz, C.-e. Darwish, M.R. Janssen, T. Kello, T. Rejeb sfar, H. Van Mechelen, P. bols, e.s. D’Hondt, J. De Moor, A. Delcourt, M. el Faham, H. Lowette, s. Moortgat, s. Morton, A. Müller, D. sahasransu, A.R. Tavernier, s. Van Doninck, W. Vannerom, D. Clerbaux, b. De Lentdecker, G. Favart, L. Hohov, D. Jaramillo, J. Lee, K. Mahdavikhorrami, M. Makarenko, I. Malara, A. Paredes, s. Pétré, L. Postiau, N. Thomas, L. Vanden bemden, M. Vander Velde, C. Vanlaer, P. Dobur, D. Knolle, J. Lamb.e.ht, L. Mestdach, G. Rendón, C. samalan, A. skovpen, K. Tytgat, M. Van Den bossche, N. Vermassen, b. Wezenb.e., L. benecke, A. bruno, G. bury, F. Caputo, C. David, P. Delaere, C. Donertas, I.s. Giammanco, A. Jaffel, K. Jain, sa. Lemaitre, V. Mondal, K. Taliercio, A. Tran, T.T. Vischia, P. Wertz, s. Alves, G.A. Coelho, e. Hensel, C. Moraes, A. Rebello Teles, P. Aldá Júnior, W.L. Alves Gallo Pereira, M. barroso Ferreira Filho, M. brandao Malbouisson, H. Carvalho, W. Chinellato, J. Da Costa, e.M. Da silveira, G.G. De Jesus Damiao, D. Dos santos sousa, V. Fonseca De souza, s. Martins, J. Mora Herrera, C. Mota Amarilo, K. Mundim, L. Nogima, H. santoro, A. silva Do Amaral, s.M. sznajder, A. Thiel, M. Vilela Pereira, A. bernardes, C.A. Calligaris, L. Fernandez Perez Tomei, T.R. Gregores, e.M. Mercadante, P.G. Novaes, s.F. Padula, sandra s. Aleksandrov, A. Antchev, G. Hadjiiska, R. Iaydjiev, P. Misheva, M. Rodozov, M. shopova, M. sultanov, G. Dimitrov, A. Ivanov, T. Litov, L. Pavlov, b. Petkov, P. Petrov, A. shumka, e. Thakur, s. Cheng, T. Javaid, T. Mittal, M. Yuan, L. Ahmad, M. bauer, G. Hu, Z. Lezki, s. Yi, K. Chen, G.M. Chen, H.s. Chen, M. Iemmi, F. Jiang, C.H. Kapoor, A. Liao, H. Liu, Z.-A. Milosevic, V. Monti, F. sharma, R. Tao, J. Thomas-Wilsker Yerevan Physics Institute Yerevan Armenia Institut für Hochenergiephysik Vienna Austria Universiteit Antwerpen Antwerpen Belgium Vrije Universiteit Brussel Brussel Belgium Université Libre de Bruxelles Bruxelles Belgium Ghent University Ghent Belgium Université Catholique de Louvain Louvain-la-Neuve Belgium Centro Brasileiro de Pesquisas Fisicas Rio de Janeiro Brazil Universidade do Estado do Rio de Janeiro Rio de Janeiro Brazil Universidade Estadual Paulista Universidade Federal do ABC São Paulo Brazil Institute for Nuclear Research and Nuclear Energy Bulgarian Academy of Sciences Sofia Bulgaria University of Sofia Sofia Bulgaria Instituto De Alta Investigación Universidad de Tarapacá Casilla 7 D Arica Chile Beihang University Beijing China Department of Physics Tsinghua University Beijing China Institute of High Energy Physics Beijing China State Key Laboratory of Nuclear Physics and Technology Peking University Beijing China Sun Yat-Sen University Guangzhou China University of Science and Technology of China Hefei China Institute of Modern Physics and Key Laboratory of Nuclear Physics and Ion-beam Application (MOE) — Fudan University Shanghai China Zhejiang University Zhejiang Hangzhou China Universidad de Los Andes Bogota Colombia Universidad de Antioquia Medellin Colombia University of Split Faculty of Electrical Engineering Mechanical Engineering and Naval Architecture Split Croatia University of Split Faculty of Science Split Croatia Institute Rudjer Boskovic Zagreb Croatia University of Cyprus Nicosia Cyprus Charles University Prague Czech Republic Escuela Politecnica Nacional Quito Ecuador Universidad San Francisco de Quito Quito Ecuador Academy of Scientific Research and Technology of the Arab Republic of Egypt Egyptian Network of High Energy Physics Cairo Egypt Center for High Energy Physics (CHEP-FU) Fayoum University El-Fayoum Egypt National Institute of Chemical Physics and Biophysics Tallinn Estonia Department of Physics

A search for the electroweak production of a vector-like quark T′, decaying to a top quark and a Higgs boson is presented. The search is based on a sample of proton-proton collision events recorded at the LHC at s = 13 TeV, corresponding to an integrated luminosity of 138 fb1sup>. This is the first T′ search that exploits the Higgs boson decay to a pair of photons. For narrow isospin singlet T′ states with masses up to 1.1 TeV, the excellent diphoton invariant mass resolution of 1–2% results in an increased sensitivity compared to previous searches based on the same production mechanism. The electroweak production of a T′ quark with mass up to 960 GeV is excluded at 95% confidence level, assuming a coupling strength κTsub> = 0.25 and a relative decay width Γ/MT′sub> < 5%. [Figure not availab.e. see fulltext.]. © 2023, The Author(s).

关键词： beyond standard Model Hadron-Hadron scattering Top Physics

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Gaia Data Release 3: Apsis. III. Non-stellar content and source classification

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Astronomy and Astrophysics 2023年 674卷

作者： Delchamb.e. L. bailer-Jones, C.A.L. bellas-Velidis, I. Drimmel, R. Garabato, D. Carballo, R. Hatzidimitriou, D. Marshall, D.J. Andrae, R. Dafonte, C. Livanou, e. Fouesneau, M. Licata, e.L. Lindstrøm, H.e.P. Manteiga, M. Robin, C. silvelo, A. Ab.e. Aramburu, A. Álvarez, M.A. bakker, J. bijaoui, A. brouillet, N. brugaletta, e. burlacu, A. Casamiquela, L. Chaoul, L. Chiavassa, A. Contursi, G. Cooper, W.J. Creevey, O.L. Dapergolas, A. De Laverny, P. Demouchy, C. Dharmawardena, T.e. edvardsson, b. Frémat, Y. García-Lario, P. García-Torres, M. Gavel, A. Gomez, A. González-santamaría, I. Heiter, U. Jean-Antoine Piccolo, A. Kontizas, M. Kordopatis, G. Korn, A.J. Lanzafame, A.C. Leb.e.on, Y. Lobel, A. Lorca, A. Magdaleno Romeo, A. Marocco, F. Mary, N. Nicolas, C. Ordenovic, C. Pailler, F. Palicio, P.A. Pallas-Quintela, L. Panem, C. Pichon, b. Poggio, e. Recio-blanco, A. Riclet, F. Rybizki, J. santoveña, R. sarro, L.M. schultheis, M.s. segol, M. slezak, I. smart, R.L. sordo, R. soubiran, C. süveges, M. Thévenin, F. Torralba elipe, G. Ulla, A. Utrilla, e. Vallenari, A. Van Dillen, e. Zhao, H. Zorec, J. Institut D Astrophysique et de Géophysique Université de Liège 19c Allée du 6 Août Liège4000 Belgium Max Planck Institute for Astronomy Königstuhl 17 Heidelberg69117 Germany National Observatory of Athens I. Metaxa and Vas. Pavlou Palaia Penteli Athens15236 Greece INAF Osservatorio Astrofisico di Torino Via Osservatorio 20 TO Pino Torinese10025 Italy CIGUS CITIC Department of Computer Science and Information Technologies University of A Coruña Campus de Elviña s/n A Coruña15071 Spain Dpto. de Matemática Aplicada y Ciencias de la Computación Univ. de Cantabria ETS Ingenieros de Caminos Canales y Puertos Avda. de los Castros s/n Santander39005 Spain Department of Astrophysics Astronomy and Mechanics National and Kapodistrian University of Athens Panepistimiopolis Zografos Athens15783 Greece IRAP Université de Toulouse CNRS UPS CNES 9 Av. colonel Roche BP 44346 ToulouseCedex 4 31028 France Niels Bohr Institute University of Copenhagen Juliane Maries Vej 30 Copenhagen2100 Denmark DXC Technology Retortvej 8 Valby2500 Denmark CIGUS CITIC Department of Nautical Sciences and Marine Engineering University of A Coruña Paseo de Ronda 51 A Coruña15071 Spain Thales Services for CNES Centre Spatial de Toulouse 18 avenue Edouard Belin ToulouseCedex 9 31401 France Camino bajo del Castillo s/n Urbanizacion Villafranca del Castillo Villanueva de la Cañada Madrid28692 Spain Université Côte D Azur Observatoire de la Côte D Azur CNRS Laboratoire Lagrange Bd de l Observatoire CS 34229 NiceCedex 4 06304 France Laboratoire D Astrophysique de Bordeaux Univ. Bordeaux CNRS B18N allée Geoffroy Saint-Hilaire Pessac33615 France INAF Osservatorio Astrofisico di Catania Via S. Sofia 78 Catania95123 Italy Telespazio for CNES Centre Spatial de Toulouse 18 avenue Edouard Belin ToulouseCedex 9 31401 France GEPI Observatoire de Paris Université PSL CNRS 5 place Jules Janssen Meudon92190 France CNES Centre Spatial de Toulouse 18 avenue Edouard B

Context. As part of the third Gaia Data Release, we present the contributions of the non-stellar and classification modules from the eighth coordination unit (CU8) of the Data Processing and Analysis Consortium, which is responsib.e.for the determination of source astrophysical parameters using Gaia data. This is the third in a series of three papers describing the work done within CU8 for this release. Aims. For each of the five relevant modules from CU8, we summarise their ob.e.tives, the methods they employ, their performance, and the results they produce for Gaia DR3. We further advise how to use these data products and highlight some limitations. Methods. The Discrete source Classifier (DsC) module provides classification probabilities associated with five types of sources: quasars, galaxies, stars, white dwarfs, and physical binary stars. A sub.e. of these sources are processed by the Outlier Analysis (OA) module, which performs an unsupervised clustering analysis, and then associates labels with the clusters to complement the DsC classification. The Quasi stellar Ob.e.t Classifier (QsOC) and the Unresolved Galaxy Classifier (UGC) determine the redshifts of the sources classified as quasar and galaxy by the DsC module. Finally, the Total Galactic extinction (TGe) module uses the extinctions of individual stars determined by another CU8 module to determine the asymptotic extinction along all lines of sight for Galactic latitudes |b|& 5. *** DR3 includes 1591 million sources with DsC classifications;56 million sources to which the OA clustering is applied;1.4 million sources with redshift estimates from UGC;6.4 million sources with QsOC redshift;and 3.1 million level 9 HeALPixes of size 0.013 deg2where the extinction is evaluated by TGe. Conclusions. Validation shows that results are in good agreement with values from external catalogues;for example 90% of the QsOC redshifts have absolute error lower than 0.1 for sources with empty warning flags, while

关键词： Galaxies

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Mineral detection of neutrinos and dark matter. A whitepaper

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Physics of the Dark Universe 2023年 41卷

作者： baum, sebastian stengel, Patrick Abe, Natsue Acevedo, Javier F. Araujo, Gabriela R. Asahara, Yoshihiro Avignone, Frank balogh, Levente baudis, Laura boukhtouchen, Yilda bramante, Joseph b.e.r, Pieter Alexander Caccianiga, Lorenzo Capozzi, Francesco Collar, Juan I. ebadi, Reza edwards, Thomas eitel, Klaus elykov, Alexey ewing, Rodney C. Freese, Katherine Fung, Audrey Galelli, Claudio Glasmacher, Ulrich A. Gleason, Arianna Hasebe, Noriko Hirose, shigenobu Horiuchi, shunsaku Hoshino, Yasushi Huber, Patrick Ido, Yuki Igami, Yohei Ishikawa, Norito Itow, Yoshitaka Kamiyama, Takashi Kato, Takenori Kavanagh, bradley J. Kawamura, Yoji Kazama, shingo Kenney, Christopher J. Kilminster, ben Kouketsu, Yui Kozaka, Yukiko Kurinsky, Noah A. Leybourne, Matthew Lucas, Thalles McDonough, William F. Marshall, Mason C. Mateos, Jose Maria Mathur, Anubhav Michibayashi, Katsuyoshi Mkhonto, sharlotte Murase, Kohta Naka, Tatsuhiro Oguni, Kenji Rajendran, surjeet sakane, Hitoshi sala, Paola scholberg, Kate semenec, Ingrida shiraishi, Takuya spitz, Joshua sun, Kai suzuki, Katsuhiko Tanin, erwin H. Vincent, Aaron Vladimirov, Nikita Walsworth, Ronald L. Watanabe, Hiroko Stanford Institute for Theoretical Physics Department of Physics Stanford University Stanford 94305 CA United States Istituto Nazionale di Fisica Nucleare Sezione di Ferrara via Giuseppe Saragat 1 Ferrara I-44122 Italy Mantle Drilling Promotion Office Japan Agency for Marine-Earth Science and Technology (JAMSTEC) Kanagawa Yokohama 236-0001 Japan SLAC National Accelerator Laboratory Stanford University 2575 Sand Hill Road Menlo Park 94025 CA United States Department of Physics University of Zurich Winterthurerstrasse 190 Zurich CH-8057 Switzerland Department of Earth and Environmental Sciences Graduate School of Environmental Studies Nagoya University Furo-cho Chikusa-ku Nagoya 464-8601 Japan Department of Physics and Astronomy University of South Carolina Columbia 29208 SC United States Mechanical and Materials Engineering Queen's University 130 Stuart Street Kingston K7L 2V9 ON Canada Department of Physics Engineering Physics and Astronomy Queen's University 64 Bader Lane KingstonOntario K7L 2S8 Canada Perimeter Institute for Theoretical Physics Waterloo N2J 2W9 ON Canada Istituto Nazionale di Fisica Nucleare Sezione di Milano Via Celoria 16 Milan Italy Dipartimento di Scienze Fisiche e Chimiche Università degli Studi dell'Aquila L'Aquila 67100 Italy Department of Physics University of Chicago Chicago 60637 IL United States Department of Physics University of Maryland College Park 20742 MD United States Quantum Technology Center University of Maryland College Park 20742 MD United States The William H. Miller III Department of Physics and Astronomy The Johns Hopkins University Baltimore 21218 MD United States Institute for Astroparticle Physics Karlsruhe Institute of Technology Karlsruhe 76021 Germany Earth and Planetary Sciences Stanford University Stanford 94305-2115 CA United States Texas Center for Cosmology and Astroparticle Physics Weinberg Institute for Theoretical Physics Department of Physics The University of

Minerals are solid state nuclear track detectors — nuclear recoils in a mineral leave latent damage to the crystal structure. Depending on the mineral and its temperature, the damage features are retained in the material from minutes (in low-melting point materials such as salts at a few hundred °C) to timescales much larger than the 4.5Gyr-age of the solar system (in refractory materials at room temperature). The damage features from the O(50)MeV fission fragments left by spontaneous fission of 238sup>U and other heavy unstab.e.isotopes have long b.e. used for fission track dating of geological samples. Laboratory studies have demonstrated the readout of defects caused by nuclear recoils with energies as small as O(1)keV. This whitepaper discusses a wide range of possib.e.applications of minerals as detectors for eRsub>≳O(1)keV nuclear recoils: Using natural minerals, one could use the damage features accumulated over O(10)Myr–O(1)Gyr to measure astrophysical neutrino fluxes (from the sun, supernovae, or cosmic rays interacting with the atmosphere) as well as search for Dark Matter. Using signals accumulated over months to few-years timescales in laboratory-manufactured minerals, one could measure reactor neutrinos or use them as Dark Matter detectors, potentially with directional sensitivity. Research groups in europe, Asia, and America have started developing microscopy techniques to read out the O(1)–O(100)nm damage features in crystals left by O(0.1)–O(100)keV nuclear recoils. We report on the status and plans of these programs. The research program towards the realization of such detectors is highly interdisciplinary, combining geoscience, material science, applied and fundamental physics with techniques from quantum information and Artificial Intelligence. © 2023 elsevier b.V.

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bottom quark energy loss and hadronization with b+ and nuclear modification factors using pp and PbPb collisions at = 5.02 TeV

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Journal of High energy Physics 2025年第2期2025卷 1-40页

作者： Hayrapetyan, A. Tumasyan, A. Adam, W. Andrejkovic, J. W. bergauer, T. Chatterjee, s. Damanakis, K. Dragicevic, M. Hussain, P. s. Jeitler, M. Krammer, N. Li, A. Liko, D. Mikulec, I. schieck, J. schöfbeck, R. schwarz, D. sonawane, M. Templ, s. Waltenberger, W. Wulz, C.-e. Darwish, M. R. Janssen, T. Van Mechelen, P. b.e.gelmans, N. D’Hondt, J. Dansana, s. De Moor, A. Delcourt, M. Heyen, F. Lowette, s. Makarenko, I. Müller, D. Tavernier, s. Tytgat, M. Van Onsem, G. P. Van Putte, s. Vannerom, D. bilin, b. Clerbaux, b. Das, A. K. De Lentdecker, G. evard, H. Favart, L. Gianneios, P. Jaramillo, J. Khalilzadeh, A. Khan, F. A. Lee, K. Mahdavikhorrami, M. Malara, A. Paredes, s. shahzad, M. A. Thomas, L. Vanden bemden, M. Vander Velde, C. Vanlaer, P. De Coen, M. Dobur, D. Gokbulut, G. Hong, Y. Knolle, J. Lamb.e.ht, L. Marckx, D. Mota Amarilo, K. samalan, A. skovpen, K. Van Den bossche, N. van der Linden, J. Wezenb.e., L. benecke, A. bethani, A. bruno, G. Caputo, C. De Favereau De Jeneret, J. Delaere, C. Donertas, I. s. Giammanco, A. Guzel, A. O. Jain, sa. Lemaitre, V. Lidrych, J. Mastrapasqua, P. Tran, T. T. Wertz, s. Alves, G. A. Alves Gallo Pereira, M. Coelho, e. Correia silva, G. Hensel, C. Menezes De Oliveira, T. Moraes, A. Rebello Teles, P. soeiro, M. Vilela Pereira, A. Aldá Júnior, W. L. barroso Ferreira Filho, M. brandao Malbouisson, H. Carvalho, W. Chinellato, J. Da Costa, e. M. Da silveira, G. G. De Jesus Damiao, D. Fonseca De souza, s. Gomes De souza, R. Macedo, M. Martins, J. Mora Herrera, C. Mundim, L. Nogima, H. Pinheiro, J. P. santoro, A. sznajder, A. Thiel, M. bernardes, C. A. Calligaris, L. Fernandez Perez Tomei, T. R. Gregores, e. M. Maietto silverio, I. Mercadante, P. G. Novaes, s. F. Orzari, b. Padula, sandra s. Aleksandrov, A. Antchev, G. Hadjiiska, R. Iaydjiev, P. Misheva, M. shopova, M. sultanov, G. Dimitrov, A. Litov, L. Pavlov, b. Petkov, P. Petrov, A. shumka, e. Keshri, s. Thakur, s. Cheng, T. Javaid, T. Yuan, L. Hu, Z. Liang, Z. Liu, J. Yi, K. Chen, G. M. Chen, H. s. Chen, M. Iemmi, F. Jiang, C. H. Yerevan Physics Institute Yerevan Armenia Yerevan State University Yerevan Armenia Institut für Hochenergiephysik Vienna Austria TU Wien Vienna Austria Universiteit Antwerpen Antwerpen Belgium Institute of Basic and Applied Sciences Faculty of Engineering Arab Academy for Science Technology and Maritime Transport Alexandria Egypt Vrije Universiteit Brussel Brussel Belgium Ghent University Ghent Belgium Université Libre de Bruxelles Bruxelles Belgium Université Catholique de Louvain Louvain-la-Neuve Belgium Centro Brasileiro de Pesquisas Fisicas Rio de Janeiro Brazil Universidade do Estado do Rio de Janeiro Rio de Janeiro Brazil Universidade Estadual de Campinas Campinas Brazil Federal University of Rio Grande do Sul Porto Alegre Brazil UFMS Nova Andradina Brazil Universidade Estadual Paulista Universidade Federal do ABC São Paulo Brazil Institute for Nuclear Research and Nuclear Energy Bulgarian Academy of Sciences Sofia Bulgaria University of Sofia Sofia Bulgaria Instituto De Alta Investigación Universidad de Tarapacá Arica Chile Beihang University Beijing China Department of Physics Tsinghua University Beijing China Nanjing Normal University Nanjing China The University of Iowa Iowa City USA Institute of High Energy Physics Beijing China University of Chinese Academy of Sciences Beijing China China Center of Advanced Science and Technology Beijing China China Spallation Neutron Source Guangdong China State Key Laboratory of Nuclear Physics and Technology Peking University Beijing China Guangdong Provincial Key Laboratory of Nuclear Science and Guangdong-Hong Kong Joint Laboratory of Quantum Matter South China Normal University Guangzhou China Sun Yat-Sen University Guangzhou China University of Science and Technology of China Hefei China Henan Normal University Xinxiang China Institute of Modern Physics and Key Laboratory of Nuclear Physics and Ion-beam Application (MOE) - Fudan University Shanghai China Zhejiang University Hangzhou Ch

The production cross sections of $$ {\textrm{b}}_{\textrm{s}}^0 $$ and b+ mesons are reported in proton-proton (pp) collisions recorded by the CMS experiment at the CeRN LHC with a center-of-mass energy of 5.02 TeV. The data sample corresponds to an integrated luminosity of 302 pb−1. The cross sections are based on measurements of the $$ {\textrm{b}}_{\textrm{s}}^0 $$ → J/ψ(μ+μ−)ϕ(1020)(K+K−) and b+ → J/ψ(μ+μ−)K+ decay channels. Results are presented in the transverse momentum (pT) range 7–50 GeV/c and the rapidity interval |y| < 2.4 for the b mesons. The measured pT-differential cross sections of b+ and $$ {\textrm{b}}_{\textrm{s}}^0 $$ in pp collisions are well described by fixed-order plus next-to-leading logarithm perturbative quantum chromodynamics calculations. Using previous PbPb collision measurements at the same nucleon-nucleon center-of-mass energy, the nuclear modification factors, RAA, of the b mesons are determined. For pT > 10 GeV/c, both mesons are found to be suppressed in PbPb collisions (with RAA values significantly below unity), with less suppression ob.e.ved for the $$ {\textrm{b}}_{\textrm{s}}^0 $$ mesons. In this pT range, the RAA values for the b+ mesons are consistent with those for inclusive charged hadrons and D0 mesons. below 10 GeV/c, both b+ and $$ {\textrm{b}}_{\textrm{s}}^0 $$ are found to be less suppressed than either inclusive charged hadrons or D0 mesons, with the $$ {\textrm{b}}_{\textrm{s}}^0 $$ RAA value consistent with unity. The RAA values found for the b+ and $$ {\textrm{b}}_{\textrm{s}}^0 $$ are compared to theoretical calculations, providing constraints on the mechanism of bottom quark energy loss and hadronization in the quark-gluon plasma, the hot and dense matter created in ultrarelativistic heavy ion collisions.

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