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arXiv 2019年

作者： Sperling, J. Phillips, d.S. Bulmer, J.F.F. Thekkadath, G.S. Eckstein, A. Wolterink, T.A.W. Lugani, J. Nam, S.W. Lita, A. Gerrits, T. Vogel, W. Agarwal, G.S. Silberhorn, C. Walmsley, I.A. Integrated Quantum Optics Group Applied Physics University of Paderborn Paderborn33098 Germany Clarendon Laboratory University of Oxford Parks Road OxfordOX1 3PU United Kingdom National Institute of Standards and Technology 325 Broadway BoulderCO80305 United States Institut für Physik Universität Rostock Albert-Einstein-Straße 23 RostockD-18059 Germany Texas A&M University College StationTX77845 United States

The representation of quantum states via phase-space functions constitutes an intuitive technique to characterize light. However, the reconstruction of such distributions is challenging as it demands specific types of detectors and detailed models thereof to account for their particular properties and imperfections. To overcome these obstacles, we derive and implement a measurement scheme that enables a reconstruction of phase-space distributions for arbitrary states whose functionality does not depend on the knowledge of the detectors, thus defining the notion of detector-agnostic phase-space distributions. Our theory presents a generalization of well-known phase-space quasiprobability distributions, such as the Wigner function. We implement our measurement protocol, using state-of-the-art transition-edge sensors without performing a detector characterization. Based on our approach, we reveal the characteristic features of heralded single- and two-photon states in phase space and certify their nonclassicality with high statistical significance. Copyright © 2019, The Authors. All rights reserved.

关键词： Phase space methods

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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. Lambrecht, L. Mestdach, G. Niedziela, M. rendón, C. roskas, C. Samalan, A. Skovpen, K. Tytgat, M. Van den Bossche, N. Vermassen, B. Wezenbeek, 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 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 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⁻¹ recorded with the CMS detector. The J/ψ and ψ(2S) mesons are reconstructed using their dimuon decay channel. The v ₂ and v ₃ coefficients are extracted using the scalar product method and studied as functions of meson transverse momentum and collision centrality. The measured v ₂ values for prompt J/ψ mesons are found to be larger than those for nonprompt J/ψ mesons. The prompt J/ψ v ₂ values at high p _T 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 ₃ and prompt ψ(2S) v ₂ and v ₃ 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 available: see fulltext.] © 2023, The Author(s).

关键词： Charm Physics Collective Flow Heavy Ion Experiments Quarkonium

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Synergies between interstellar dust and heliospheric science with an Interstellar Probe

arXiv

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arXiv 2023年

作者： Sterken, Veerle J. Hunziker, Silvan dialynas, Kostas Leitner, Jan Sommer, Maximilian Srama, ralf Baalmann, Lennart r. Li, Aigen Herbst, Konstantin Galli, André Brandt, Pontus riebe, My Baggaley, W. Jack Blanc, Michel Czechowski, Andrej Effenberger, Frederic Fields, Brian Frisch, Priscilla Horanyi, Mihaly Hsu, Hsiang-Wen Khawaja, Nozair Krüger, Harald Kurth, Bill S. Ligterink, Niels F.W. Linsky, Jeffrey L. Lisse, Casey Malaspina, david Miller, Jesse A. Opher, Merav Poppe, Andrew r. Postberg, Frank Provornikova, Elena redfield, Seth richardson, John rowan-robinson, Michael Scherer, Klaus Shen, Mitchell M. Slavin, Jon d. Sternovsky, Zoltan Stober, Gunter Strub, Peter Szalay, Jamey Trieloff, Mario Institute for Particle Physics and Astrophysics Physics Dept. ETH Zürich Wolfgang-Pauli Strasse 27 Zürich Switzerland Center of Space Research and Technology Academy of Athens 4 Soranou Efesiou str. Papagos Athens11527 Greece Institute of Earth Sciences Ruprecht-Karls-Universität Heidelberg Im Neuenheimer Feld 234-236 Heidelberg69120 Germany Institute Space Systems IRS University Stuttgart Pfaffenwaldring 29 Stuttgart69168 Germany Department of Physics and Astronomy University of Missouri ColumbiaMO65211 United States Fac. of Math. and Natural Sciences Christian-Albrechts-University of Kiel Leibnizstrasse 11-19 Kiel24118 Germany Physics Institute University of Bern Bern3012 Switzerland Applied Physics Laboratory The Johns Hopkins University LaurelMD20723 United States Institute of Geochemistry and Petrology Dept. of Earth Sciences ETH Zürich Clausiusstrasse 25 Zürich8092 Switzerland Department of Physics and Astronomy University of Canterbury Christchurch New Zealand 9 Av. du Colonel Roche Toulouse31400 France Space Research Centre Polish Academy of Sciences Warsaw Poland Institute for Theoretical Physics IV Chair for Space- and Astrophysics Ruhr-Universität Bochum BochumD-44780 Germany Bay Area Environmental Research Institute NASA Research Park Moffett FieldCA United States Center for Theoretical Astrophysics Departments of Astronomy and Physics University of Illinois IL UrbanaIL61801 United States University of Chicago Astronomy & Astrophysics Center 5640 S Ellis Ave ChicagoIL60637 United States Laboratory for Atmospheric and Space Physics University of Colorado BoulderCO United States Institute of Geological Sciences Freie Universität Berlin BerlinD-12249 Germany Max-Planck-Institut für Sonnensystemforschung Justus-von-Liebig-Weg 3 Göttingen37077 Germany Department of Physics and Astronomy University of Iowa Iowa CityIA United States JILA University of Colorado BoulderCO80305-0440 United States Astrophysica

We discuss the synergies between heliospheric and dust science, the open science questions, the technological endeavors and programmatic aspects that are important to maintain or develop in the decade to come. In particular, we illustrate how we can use interstellar dust in the solar system as a tracer for the (dynamic) heliosphere properties, and emphasize the fairly unexplored, but potentially important science question of the role of cosmic dust in heliospheric and astrospheric physics. We show that an Interstellar Probe mission with a dedicated dust suite would bring unprecedented advances to interstellar dust research, and can also contribute — through measuring dust -– to heliospheric science. This can, in particular, be done well if we work in synergy with other missions inside the solar system, thereby using multiple vantage points in space to measure the dust as it ‘rolls’ into the heliosphere. Such synergies between missions inside the solar system and far out are crucial for disentangling the spatially and temporally varying dust flow. Finally, we highlight the relevant instrumentation and its suitability for contributing to finding answers to the research questions. © 2023, CC BY.

关键词： dust

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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. Lambrecht, L. Mestdach, G. rendón, C. Samalan, A. Skovpen, K. Tytgat, M. Van den Bossche, N. Vermassen, B. Wezenbeek, 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⁻¹, 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 924₋₄₀⁺³² pb. © The Author(s) 2023.

关键词： Hadron-Hadron Scattering Top Physics

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The Santa Barbara Binary-disk Code Comparison

arXiv

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arXiv 2024年

作者： duffell, Paul C. dittmann, Alexander J. d’Orazio, daniel J. Franchini, Alessia Kratter, Kaitlin M. Penzlin, Anna B.T. ragusa, Enrico Siwek, Magdalena Tiede, Christopher Wang, Haiyang Zrake, Jonathan dempsey, Adam M. Haiman, Zoltan Lupi, Alessandro Pirog, Michal ryan, Geoffrey Department of Physics and Astronomy Purdue University 525 Northwestern Avenue West LafayetteIN47907 United States Department of Astronomy Joint Space-Science Institute University of Maryland College ParkMD20742-2421 United States Theoretical Division Los Alamos National Laboratory Los AlamosNM87545 United States Niels Bohr International Academy Niels Bohr Institute Blegdamsvej 17 Copenhagen2100 Denmark Universität Zürich Institut für Astrophysik Winterthurerstrasse 190 ZürichCH-8057 Switzerland Dipartimento di Fisica "G. Occhialini" Università degli Studi di Milano-Bicocca Piazza della Scienza 3 MilanI-20126 Italy INFN Sezione di Milano-Bicocca Piazza della Scienza 3 MilanoI-20126 Italy University of Arizona 933 N Cherry Ave TucsonAZ85721 United States Institut für Astronomie und Astrophysik Universität Tübingen Auf der Morgenstelle 10 TübingenD-72076 Germany Astrophysics Group Department of Physics Imperial College London Prince Consort Rd LondonSW7 2AZ United Kingdom Dipartimento di Matematica Università degli Studi di Milano Via Saldini 50 Milano20133 Italy ENS de Lyon CRAL UMR5574 Universite Claude Bernard Lyon 1 CNRS LyonF-69007 France Center for Astrophysics Harvard University CambridgeMA02138 United States Fudan University Department of Physics Shanghai200433 China Department of Applied Mathematics and Theoretical Physics University of Cambridge Wilberforce Road CambridgeCB3 0WA United Kingdom TAPIR California Institute of Technology PasadenaCA91125 United States Department of Physics and Astronomy Clemson University ClemsonSC29634 United States X Computational Physics Division Los Alamos National Laboratory Los AlamosNM87545 United States Columbia University Departments of Astronomy and Physics 550 West 120th Street New YorkNY10027 United States Dipartimento di Scienza e Alta Tecnologia Università degli Studi dell’Insubria via Valleggio 11 ComoI-22100 Italy Wilkes Honors College Florida Atlantic Univer

We have performed numerical calculations of a binary interacting with a gas disk, using eleven different numerical methods and a standard binary-disk setup. The goal of this study is to determine whether all codes agree on a numerically converged solution, and to determine the necessary resolution for convergence and the number of binary orbits that must be computed to reach an agreed-upon relaxed state of the binary-disk system. We find that all codes can agree on a converged solution (depending on the diagnostic being measured). The zone spacing required for most codes to reach a converged measurement of the torques applied to the binary by the disk is roughly 1% of the binary separation in the vicinity of the binary components. For our disk model to reach a relaxed state, codes must be run for at least 200 binary orbits, corresponding to about a viscous time for our parameters, 0.2(a2ΩB/ν) binary orbits, where ν is the kinematic viscosity. The largest discrepancies between codes resulted from the dimensionality of the setup (3d vs 2d disks). We find good agreement in the total torque on the binary between codes, although the partition of this torque between the gravitational torque, orbital accretion torque, and spin accretion torque depends sensitively on the sink prescriptions employed. In agreement with previous studies, we find a modest difference in torques and accretion variability between 2d and 3d disk models. We find cavity precession rates to be appreciably faster in 3d than in 2d. Copyright © 2024, The Authors. All rights reserved.

关键词： Torque

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Identification of low-momentum muons in the CMS detector using multivariate techniques in proton-proton collisions at √s = 13.6 TeV

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Journal of Instrumentation 2025年第4期20卷

作者： Chekhovsky, V. Hayrapetyan, A. Makarenko, V. Tumasyan, A. Adam, W. Andrejkovic, J.W. Benato, L. 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. Waltenberger, W. Wulz, C.-E. Janssen, T. Kwon, H. Van Laer, T. Van Mechelen, P. Breugelmans, N. d'Hondt, J. dansana, S. de Moor, A. delcourt, M. Heyen, F. Hong, Y. 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 Bruyn, I. de Lentdecker, G. Evard, H. Favart, L. Gianneios, P. Khalilzadeh, A. Khan, F.A. Malara, A. Shahzad, M.A. Thomas, L. Vanden Bemden, M. Vander Velde, C. Vanlaer, P. de Coen, M. dobur, d. Gokbulut, G. Knolle, J. Lambrecht, L. Marckx, d. Skovpen, K. Van den Bossche, N. van der Linden, J. Vandenbroeck, J. Wezenbeek, L. Bein, S. 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. Turkcapar, S. Alves, G.A. Coelho, E. Correia Silva, G. Hensel, C. Menezes de Oliveira, T. Mora Herrera, C. rebello Teles, P. Soeiro, M. Tonelli Manganote, E.J. Vilela Pereira, A. Aldá, 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. Laux Kuhn, T. Macedo, M. Martins, J. Mota Amarilo, K. Yerevan State University Yerevan Armenia TU Wien Vienna Austria Ghent University Ghent Belgium Universidade do Estado do Rio de Janeiro Rio de Janeiro Brazil FACAMP - Faculdades de Campinas Sao Paulo Brazil Universidade Estadual de Campinas Campinas Brazil Federal University of Rio Grande do Sul Porto Alegre Brazil University of Chinese Academy of Sciences Beijing China China Center of Advanced Science and Technology Beijing China Texas A & M University at Qatar Doha Qatar China Spallation Neutron Source Guangdong China Institute of Nuclear Physics Uzbekistan Academy of Sciences Tashkent Uzbekistan University of Shanghai for Science and Technology Shanghai China Imperial College London United Kingdom CERN Cairo University Cairo Egypt Helwan University Cairo Egypt Suez University Suez Egypt Yerevan Physics Institute Yerevan Armenia Purdue University West LafayetteIN United States Université de Haute Alsace Mulhouse France Istinye University Istanbul Turkey Tbilisi State University Tbilisi Georgia The University of the State of Amazonas Manaus Brazil University of Hamburg Hamburg Germany RWTH Aachen University III. Physikalisches Institut A Aachen Germany Wuppertal Germany Brandenburg University of Technology Cottbus Germany Forschungszentrum Jülich Juelich Germany CERN European Organization for Nuclear Research Geneva Switzerland HUN-REN ATOMKI - Institute of Nuclear Research Debrecen Hungary Bucharest Romania MTA-ELTE Lendület CMS Particle and Nuclear Physics Group Eötvös Loránd University Budapest Hungary HUN-REN Wigner Research Centre for Physics Budapest Hungary Physics Department Faculty of Science Assiut University Assiut Egypt Punjab Agricultural University Ludhiana India University of Visva-Bharati Santiniketan India Bangalore India Amity University Uttar Pradesh Noida India UPES - University of Petroleum and Energy Studies Dehradun India IIT Bhubaneswar Bhubaneswar India Institute of Physics Bhubaneswar India Unive

"Soft"muons with a transverse momentum below 10 GeV are featured in many processes studied by the CMS experiment, such as decays of heavy-flavor hadrons or rare tau lepton decays. Maximizing the selection efficiency for these muons, while simultaneously suppressing backgrounds from long-lived light-flavor hadron decays, is therefore important for the success of the CMS physics program. Multivariate techniques have been shown to deliver better muon identification performance than traditional selection techniques. To take full advantage of the large data set currently being collected during run 3 of the CErN LHC, a new multivariate classifier based on a gradient-boosted decision tree has been developed. It offers a significantly improved separation of signal and background muons compared to a similar classifier used for the analysis of the run 2 data. The performance of the new classifier is evaluated on a data set collected with the CMS detector in 2022 and 2023, corresponding to an integrated luminosity of 62 fb-1 © 2025 CErN for the benefit of the CMS collaboration. Published by IOP Publishing Ltd on behalf of Sissa Medialab.

关键词： data reduction

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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. Lambrecht, L. Mestdach, G. rendón, C. Samalan, A. Skovpen, K. Tytgat, M. Van den Bossche, N. Vermassen, B. Wezenbeek, 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⁻¹. The transverse mass spectrum is analyzed for the presence of new physics. No significant deviation from the SM prediction is observed. 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 observed 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 available: see fulltext.]. © 2023, The Author(s).

关键词： Beyond Standard Model Hadron-Hadron Scattering Tau Physics

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First Measurement of A=4 Hypernuclei and Antihypernuclei at the LHC

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Physical review Letters 2025年第16期134卷 162301-162301页

作者： S. Acharya A. Agarwal G. Aglieri rinella L. Aglietta M. Agnello N. Agrawal Z. Ahammed S. Ahmad S. U. Ahn I. Ahuja A. Akindinov V. Akishina M. Al-Turany d. Aleksandrov B. Alessandro H. M. Alfanda r. Alfaro Molina B. Ali A. Alici N. Alizadehvandchali A. Alkin J. Alme G. Alocco T. Alt A. r. Altamura I. Altsybeev J. r. Alvarado C. O. r. Alvarez M. N. Anaam C. Andrei N. Andreou A. Andronic E. Andronov V. Anguelov F. Antinori P. Antonioli N. Apadula L. Aphecetche H. Appelshäuser C. Arata S. Arcelli r. Arnaldi J. G. M. C. A. Arneiro I. C. Arsene M. Arslandok A. Augustinus r. Averbeck d. Averyanov M. d. Azmi H. Baba A. Badalà J. Bae Y. W. Baek X. Bai r. Bailhache Y. Bailung r. Bala A. Balbino A. Baldisseri B. Balis Z. Banoo V. Barbasova F. Barile L. Barioglio M. Barlou B. Barman G. G. Barnaföldi L. S. Barnby E. Barreau V. Barret L. Barreto C. Bartels K. Barth E. Bartsch N. Bastid S. Basu G. Batigne d. Battistini B. Batyunya d. Bauri J. L. Bazo Alba I. G. Bearden C. Beattie P. Becht d. Behera I. Belikov A. d. C. Bell Hechavarria F. Bellini r. Bellwied S. Belokurova L. G. E. Beltran Y. A. V. Beltran G. Bencedi A. Bensaoula S. Beole Y. Berdnikov A. Berdnikova L. Bergmann M. G. Besoiu L. Betev P. P. Bhaduri A. Bhasin B. Bhattacharjee L. Bianchi J. Bielčík J. Bielčíková A. P. Bigot A. Bilandzic G. Biro S. Biswas N. Bize J. T. Blair d. Blau M. B. Blidaru N. Bluhme C. Blume G. Boca F. Bock T. Bodova J. Bok L. Boldizsár M. Bombara P. M. Bond G. Bonomi H. Borel A. Borissov A. G. Borquez Carcamo E. Botta Y. E. M. Bouziani L. Bratrud P. Braun-Munzinger M. Bregant M. Broz G. E. Bruno V. d. Buchakchiev M. d. Buckland d. Budnikov H. Buesching S. Bufalino P. Buhler N. Burmasov Z. Buthelezi A. Bylinkin S. A. Bysiak J. C. Cabanillas Noris M. F. T. Cabrera M. Cai H. Caines A. Caliva E. Calvo Villar J. M. M. Camacho P. Camerini F. d. M. Canedo S. L. Cantway M. Carabas A. A. Carballo F. Carnesecchi r. Caron L. A. d. Carvalho J. Castillo Castellanos M. Castoldi F. Catalano S. Cattaruzzi r. Cerri I. Chakaberia P. Chakraborty S. Chandra S. Cha Université Clermont Auvergne CNRS/IN2P3 LPC Clermont-Ferrand France Variable Energy Cyclotron Centre Homi Bhabha National Institute Kolkata India European Organization for Nuclear Research (CERN) Geneva Switzerland Dipartimento di Fisica dell’Università and Sezione INFN Turin Italy Dipartimento DISAT del Politecnico and Sezione INFN Turin Italy Dipartimento di Fisica e Astronomia dell’Università and Sezione INFN Bologna Italy Department of Physics Aligarh Muslim University Aligarh India Korea Institute of Science and Technology Information Daejeon Republic of Korea Faculty of Science P.J. Šafárik University Košice Slovak Republic Affiliated with an institute covered by a cooperation agreement with CERN Frankfurt Institute for Advanced Studies Johann Wolfgang Goethe-Universität Frankfurt Frankfurt Germany Research Division and ExtreMe Matter Institute EMMI GSI Helmholtzzentrum für Schwerionenforschung GmbH Darmstadt Germany INFN Sezione di Torino Turin Italy Central China Normal University Wuhan China Instituto de Física Universidad Nacional Autónoma de México Mexico City Mexico University of Houston Houston Texas USA Sungkyunkwan University Suwon City Republic of Korea Department of Physics and Technology University of Bergen Bergen Norway INFN Sezione di Cagliari Cagliari Italy Institut für Kernphysik Johann Wolfgang Goethe-Universität Frankfurt Frankfurt Germany INFN Sezione di Bari Bari Italy Physik Department Technische Universität München Munich Germany High Energy Physics Group Universidad Autónoma de Puebla Puebla Mexico Horia Hulubei National Institute of Physics and Nuclear Engineering Bucharest Romania University of Derby Derby United Kingdom Universität Münster Institut für Kernphysik Münster Germany Physikalisches Institut Ruprecht-Karls-Universität Heidelberg Heidelberg Germany INFN Sezione di Padova Padova Italy INFN Sezione di Bologna Bologna Italy Lawrence Berkeley National Laboratory Berkeley California USA SUBATECH I

In this Letter, the first evidence of the He¯Λ¯4 antihypernucleus is presented, along with the first measurement at the LHC of the production of (anti)hypernuclei with mass number A=4, specifically (anti)HΛ4 and (anti)HeΛ4. In addition, the antiparticle-to-particle ratios for both hypernuclei (H¯Λ¯4/HΛ4 and He¯Λ¯4/HeΛ4) are shown, which are sensitive to the baryochemical potential of the strongly interacting matter created in heavy-ion collisions. The results are obtained from a data sample of central Pb-Pb collisions, collected during the 2018 LHC data taking at a center-of-mass energy per nucleon pair of sNN=5.02 TeV. The yields measured for the average of the charge-conjugated states are found to be [0.78±0.19(stat)±0.17(syst)]×10−6 for the (anti)HΛ4 and [1.08±0.34(stat)±0.20(syst)]×10−6 for the (anti)HeΛ4, and the measured antiparticle-to-particle ratios are in agreement with unity. The presence of (anti)HΛ4 and (anti)HeΛ4 excited states is expected to strongly enhance the production yield of these hypernuclei. The yield values exhibit a combined deviation of 3.3σ from the theoretical ground-state-only expectation, while the inclusion of the excited states in the calculations leads to an agreement within 0.6σ with the present measurements. Additionally, the measured (anti)HΛ4 and (anti)HeΛ4 masses are compatible with the world-average values within the uncertainties.

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resonance production in Pb–Pb collisions at TeV

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The European Physical Journal C 2023年第5期83卷 1-16页

作者： Acharya, S. Adamová, d. Adler, A. Aglieri rinella, G. Agnello, M. Agrawal, N. Ahammed, Z. Ahmad, S. Ahn, S. U. Ahuja, I. Akindinov, A. Al-Turany, M. Aleksandrov, d. Alessandro, B. Alfanda, H. M. Alfaro Molina, r. Ali, B. Ali, Y. Alici, A. Alizadehvandchali, N. Alkin, A. Alme, J. Alocco, G. Alt, T. Altsybeev, I. Anaam, M. N. Andrei, C. Andronic, A. Anguelov, V. Antinori, F. Antonioli, P. Anuj, C. Apadula, N. Aphecetche, L. Appelshäuser, H. Arata, C. Arcelli, S. Arnaldi, r. Arsene, I. C. Arslandok, M. Augustinus, A. Averbeck, r. Aziz, S. Azmi, M. d. Badalà, A. Baek, Y. W. Bai, X. Bailhache, r. Bailung, Y. Bala, r. Balbino, A. Baldisseri, A. Balis, B. Banerjee, d. Banoo, Z. Barbera, r. Barioglio, L. Barlou, M. Barnaföldi, G. G. Barnby, L. S. Barret, V. Barreto, L. Bartels, C. Barth, K. Bartsch, E. Baruffaldi, F. Bastid, N. Basu, S. Batigne, G. Battistini, d. Batyunya, B. Bauri, d. Alba, J. L. Bazo Bearden, I. G. Beattie, C. Becht, P. Behera, d. Belikov, I. Bell Hechavarria, A. d. C. Bellini, F. Bellwied, r. Belokurova, S. Belyaev, V. Bencedi, G. Beole, S. Bercuci, A. Berdnikov, Y. Berdnikova, A. Bergmann, L. Besoiu, M. G. Betev, L. Bhaduri, P. P. Bhasin, A. Bhat, M. A. Bhattacharjee, B. Bianchi, L. Bianchi, N. Bielčík, J. Bielčíková, J. Biernat, J. Bigot, A. P. Bilandzic, A. Biro, G. Biswas, S. Bize, N. Blair, J. T. Blau, d. Blidaru, M. B. Bluhme, N. Blume, C. Boca, G. Bock, F. Bodova, T. Bogdanov, A. Boi, S. Bok, J. Boldizsár, L. Bolozdynya, A. Bombara, M. Bond, P. M. Bonomi, G. Borel, H. Borissov, A. Bossi, H. Botta, E. Bratrud, L. Braun-Munzinger, P. Bregant, M. Broz, M. Bruno, G. E. Buckland, M. d. Budnikov, d. Buesching, H. Bufalino, S. Bugnon, O. Buhler, P. Buthelezi, Z. Butt, J. B. Bylinkin, A. Bysiak, S. A. Cai, M. Caines, H. Caliva, A. Calvo Villar, E. Camacho, J. M. M. Camerini, P. Canedo, F. d. M. Carabas, M. Carnesecchi, F. Caron, r. Castillo Castellanos, J. Catalano, F. Ceballos Sanchez, C. Chakaberia, I. Chakraborty, P. Chandra, S. Chapeland, S. Chartier, M. Chattopadhyay, S. Chavez, T. G. Cheng, T. Ch Université Clermont Auvergne CNRS/IN2P3 LPC Clermont-Ferrand France Variable Energy Cyclotron Centre Homi Bhabha National Institute Kolkata India Nuclear Physics Institute of the Czech Academy of Sciences Husinec-Řež Czech Republic Johann-Wolfgang-Goethe Universität Frankfurt Institut für Informatik Fachbereich Informatik und Mathematik Frankfurt Germany European Organization for Nuclear Research (CERN) Geneva Switzerland Dipartimento DISAT del Politecnico and Sezione INFN Turin Italy INFN Sezione di Bologna Bologna Italy Department of Physics Aligarh Muslim University Aligarh India Korea Institute of Science and Technology Information Daejeon Republic of Korea Faculty of Science P.J. Šafárik University Košice Slovak Republic Affiliated with an Institute Covered by a Cooperation Agreement with CERN Geneva Switzerland Research Division and ExtreMe Matter Institute EMMI GSI Helmholtzzentrum für Schwerionenforschung GmbH Darmstadt Germany INFN Sezione di Torino Turin Italy Central China Normal University Wuhan China Instituto de Física Universidad Nacional Autónoma de México Mexico City Mexico COMSATS University Islamabad Islamabad Pakistan Dipartimento di Fisica e Astronomia dell’Università and Sezione INFN Bologna Italy University of Houston Houston USA Department of Physics and Technology University of Bergen Bergen Norway INFN Sezione di Cagliari Cagliari Italy Institut für Kernphysik Johann Wolfgang Goethe-Universität Frankfurt Frankfurt Germany Horia Hulubei National Institute of Physics and Nuclear Engineering Bucharest Romania Westfälische Wilhelms-Universität Münster Institut für Kernphysik Münster Germany Physikalisches Institut Ruprecht-Karls-Universität Heidelberg Heidelberg Germany INFN Sezione di Padova Padua Italy Lawrence Berkeley National Laboratory Berkeley USA SUBATECH IMT Atlantique Nantes Université CNRS-IN2P3 Nantes France Laboratoire de Physique Subatomique et de Cosmologie Université Grenoble-Alpes CNRS-IN2P3 Grenoble

Hadronic resonances are used to probe the hadron gas produced in the late stage of heavy-ion collisions since they decay on the same timescale, of the order of 1–10 fm/c, as the decoupling time of the system. In the hadron gas, (pseudo)elastic scatterings among the products of resonances that decayed before the kinetic freeze-out and regeneration processes counteract each other, the net effect depending on the resonance lifetime, the duration of the hadronic phase, and the hadronic cross sections at play. In this context, the $$\Sigma (1385)^{\pm }$$ particle is of particular interest as models predict that regeneration dominates over rescattering despite its relatively short lifetime of about 5.5 fm/c. The first measurement of the $$\Sigma (1385)^{\pm }$$ resonance production at midrapidity in Pb–Pb collisions at $$\sqrt{s_{\textrm{NN}}}= 5.02$$ TeV with the ALICE detector is presented in this Letter. The resonances are reconstructed via their hadronic decay channel, $$\Lambda \pi $$ , as a function of the transverse momentum ( $$p_\textrm{T}$$ ) and the collision centrality. The results are discussed in comparison with the measured yield of pions and with expectations from the statistical hadronization model as well as commonly employed event generators, including PYTHIA8/Angantyr and EPOS3 coupled to the UrQMd hadronic cascade afterburner. None of the models can describe the data. For $$\Sigma (1385)^{\pm }$$ , a similar behaviour as $$\textrm{K}^{*} (892)^r$$ is observed in data unlike the predictions of EPOS3 with afterburner.

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Performance of the joint LST-1 and MAGIC observations evaluated with Crab Nebula data

arXiv

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arXiv 2023年

作者： Abe, H. Abe, K. Abe, S. Acciari, V.A. Aguasca-Cabot, A. Agudo, I. Crespo, N. Alvarez Aniello, T. Ansoldi, S. Antonelli, L.A. Aramo, C. Arbet-Engels, A. Arcaro, C. Artero, M. Asano, K. Aubert, P. Baack, d. Babić, A. Baktash, A. Bamba, A. Larriva, A. Baquero Baroncelli, L. de Almeida, U. Barres Barrio, J.A. Batković, I. Baxter, J. González, J. Becerra Bednarek, W. Bernardini, E. Bernardos, M.I. Medrano, J. Bernete Berti, A. Besenrieder, J. Bhattacharjee, P. Biederbeck, N. Bigongiari, C. Biland, A. Bissaldi, E. Blanch, O. Bonnoli, G. Bordas, P. Bošnjak, Ž. Bulgarelli, A. Burelli, I. Burmistrov, L. Buscemi, M. Busetto, G. Ordaz, A. Campoy Cardillo, M. Caroff, S. Carosi, A. Carosi, r. Carrasco, M.S. Carretero-Castrillo, M. Cassol, F. Castro-Tirado, A.J. Cauz, d. Cerasole, d. Ceribella, G. Chai, Y. Cheng, K. Chiavassa, A. Chikawa, M. Chytka, L. Cifuentes, A. Cikota, S. Colombo, E. Contreras, J.L. Cornelia, A. Cortina, J. Costantini, H. Covino, S. d’Amico, G. d’Elia, V. da Vela, P. dalchenko, M. dazzi, F. de Angelis, A. de Bony de Lavergne, M. de Lotto, B. de Lucia, M. de Menezes, r. del Peral, L. delPopolo, A. deleglise, G. delfino, M. Mendez, C. delgado Mengual, J. delgado Volpe, d. della dellaiera, M. depaoli, d. de Angelis, A. di Piano, A. di Pierro, F. di Pilato, A. di Tria, r. di Venere, L. dominik, r.M. Prester, d. dominis donini, A. dorner, d. doro, M. díaz, C. Eisenberger, L. Elsässer, d. Emery, G. Escudero, J. ramazani, V. Fallah Fariña, L. Fattorini, A. Ferrara, G. Ferrarotto, F. Fiasson, A. Foffano, L. Font, L. Coromina, L. Freixas Fröse, S. Fukami, S. Fukazawa, Y. López, r.J. Garcia Garcia, E. Garczarczyk, M. López, r.J. García Gasbarra, C. Gasparrini, d. Gasparyan, S. Gaug, M. Geyer, d. Paiva, J.G. Giesbrecht Giglietto, N. Giordano, F. Gliwny, P. Godinović, N. Grau, r. Green, d. Green, J.G. Gunji, S. Günther, P. Hackfeld, J. Hadasch, d. Hahn, A. Hashiyama, K. Hassan, T. Hayashi, K. Heckmann, L. Heller, M. Llorente, J. Herrera Hirotani, K. Hoffmann, d. Horns, d. Houles, J. Institute for Cosmic Ray Research University of Tokyo 5-1-5 Kashiwa-no-ha Chiba Kashiwa277-8582 Japan Department of Physics Tokai University 4-1-1 Kita-Kaname Kanagawa Hiratsuka259-1292 Japan Instituto de Astrofísica de Canarias Departamento de Astrofísica Universidad de La Laguna Tenerife La Laguna Spain Departament de Física Quàntica i Astrofísica Institut de Ciències del Cosmos Universitat de Barcelona IEEC-UB Martí i Franquès 1 Barcelona08028 Spain Instituto de Astrofísica de Andalucía-CSIC Glorieta de la Astronomía s/n Granada18008 Spain Grupo de Electronica Universidad Complutense de Madrid Av. Complutense s/n Madrid28040 Spain RomeI-00136 Italy INFN Sezione di Trieste Università degli studi di Udine via delle scienze 206 Udine33100 Italy Rome Italy INAF - Osservatorio Astronomico di Roma Via di Frascati 33 Monteporzio Catone00040 Italy INFN Sezione di Napoli Via Cintia ed. G Napoli80126 Italy Max-Planck-Institut für Physik Föhringer Ring 6 München80805 Germany Università di Padova INFN PadovaI-35131 Italy The Barcelona Institute of Science and Technology Campus UAB Bellaterra08193 Spain Univ. Savoie Mont Blanc CNRS Laboratoire d’Annecy de Physique des Particules - IN2P3 Annecy74000 France Department of Physics TU Dortmund University Otto-Hahn-Str. 4 Dortmund44227 Germany Zagreb10000 Croatia Universität Hamburg Institut für Experimentalphysik Luruper Chaussee 149 Hamburg22761 Germany Graduate School of Science University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo113-0033 Japan IPARCOS-UCM Instituto de Física de Partículas y del Cosmos EMFTEL Department Universidad Complutense de Madrid MadridE-28040 Spain Faculty of Science and Technology Universidad del Azuay Cuenca Ecuador INAF - Osservatorio di Astrofisica e Scienza dello spazio di Bologna Via Piero Gobetti 93/3 Bologna40129 Italy Centro Brasileiro de Pesquisas Físicas Rua Xavier Sigaud 150 RJ Rio de Janeiro22290-180 Brazil INFN Sezione di Padova

Aims. LST-1, the prototype of the Large-Sized Telescope for the upcoming Cherenkov Telescope Array Observatory, is concluding its commissioning in Observatorio del roque de los Muchachos on the island of La Palma. The proximity of LST-1 (Large-Sized Telescope 1) to the two MAGIC (Major Atmospheric Gamma Imaging Cherenkov) telescopes permits observations of the same gamma-ray events with both systems. Methods. We describe the joint LST-1+MAGIC analysis pipeline and use simultaneous Crab Nebula observations and Monte Carlo simulations to assess the performance of the three-telescope system. The addition of the LST-1 telescope allows the recovery of events in which one of the MAGIC images is too dim to survive analysis quality cuts. results. Thanks to the resulting increase in the collection area and stronger background rejection, we find a significant improvement in sensitivity, allowing the detection of 30% weaker fluxes in the energy range between 200 GeV and 3 TeV. The spectrum of the Crab Nebula, reconstructed in the energy range ∼60 GeV to ∼10 TeV, is in agreement with previous measurements. Copyright © 2023, The Authors. All rights reserved.

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