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search for a Light Higgs Boson in single-Photon Decays of ϒ(1s) Using ϒ(2s)→π+π−ϒ(1s) tagging Method

Physical Review Letters 2022年第8期128卷 081804-081804页

作者： s. Jia C. P. shen i. Adachi H. Aihara s. Al said D. M. Asner H. Atmacan t. Aushev R. Ayad V. Babu P. Behera K. Belous J. Bennett M. Bessner V. Bhardwaj B. Bhuyan t. Bilka A. Bobrov D. Bodrov G. Bonvicini J. Borah M. Bračko P. Branchini t. E. Browder A. Budano M. Campajola D. Červenkov M.-C. Chang P. Chang V. Chekelian A. Chen B. G. Cheon K. Chilikin H. E. Cho K. Cho s.-J. Cho s.-K. Choi Y. Choi s. Choudhury D. Cinabro s. Cunliffe s. Das N. Dash G. De Nardo G. De Pietro R. Dhamija F. Di Capua Z. Doležal t. V. Dong D. Epifanov t. Ferber D. Ferlewicz B. G. Fulsom R. Garg V. Gaur N. Gabyshev A. Giri P. Goldenzweig B. Golob E. Graziani Y. Guan K. Gudkova C. Hadjivasiliou t. Hara K. Hayasaka H. Hayashii M. t. Hedges W.-s. Hou K. inami G. inguglia A. ishikawa R. itoh M. iwasaki Y. iwasaki W. W. Jacobs E.-J. Jang Y. Jin K. K. Joo J. Kahn A. B. Kaliyar K. H. Kang t. Kawasaki C. Kiesling C. H. Kim D. Y. Kim K.-H. Kim Y.-K. Kim K. Kinoshita P. Kodyš s. Kohani t. Konno A. Korobov s. Korpar E. Kovalenko P. Križan R. Kroeger P. Krokovny M. Kumar R. Kumar K. Kumara Y.-J. Kwon t. Lam M. Laurenza s. C. Lee J. Li L. K. Li Y. Li Y. B. Li L. Li Gioi J. Libby K. Lieret D. Liventsev A. Martini M. Masuda t. Matsuda D. Matvienko s. K. Maurya F. Meier M. Merola F. Metzner K. Miyabayashi R. Mizuk G. B. Mohanty R. Mussa M. Nakao D. Narwal Z. Natkaniec A. Natochii L. Nayak N. K. Nisar s. Nishida K. Nishimura K. Ogawa s. Ogawa H. Ono P. Oskin P. Pakhlov G. Pakhlova t. Pang s. Pardi s.-H. Park s. Patra s. Paul t. K. Pedlar R. Pestotnik L. E. Piilonen t. Podobnik E. Prencipe M. t. Prim M. Röhrken A. Rostomyan N. Rout G. Russo D. sahoo s. sandilya A. sangal L. santelj t. sanuki V. savinov G. schnell J. schueler C. schwanda Y. seino K. senyo M. E. sevior M. shapkin C. sharma V. shebalin J.-G. shiu B. shwartz J. B. singh A. sokolov E. solovieva s. stanič M. starič Z. s. stottler M. sumihama K. sumisawa t. sumiyoshi W. sutcliffe M. takizawa U. tamponi K. tanida F. tenchini K. trabelsi M. Uchida s. Uehara t. Uglov Y. Unno K. Uno s. Uno P. Urquijo s Key Laboratory of Nuclear Physics and Ion-beam Application (MOE) and Institute of Modern Physics Fudan University Shanghai 200443 High Energy Accelerator Research Organization (KEK) Tsukuba 305-0801 SOKENDAI (The Graduate University for Advanced Studies) Hayama 240-0193 Department of Physics University of Tokyo Tokyo 113-0033 Department of Physics Faculty of Science University of Tabuk Tabuk 71451 Department of Physics Faculty of Science King Abdulaziz University Jeddah 21589 Brookhaven National Laboratory Upton New York 11973 University of Cincinnati Cincinnati Ohio 45221 National Research University Higher School of Economics Moscow 101000 Deutsches Elektronen–Synchrotron 22607 Hamburg Indian Institute of Technology Madras Chennai 600036 Institute for High Energy Physics Protvino 142281 University of Mississippi University Mississippi 38677 University of Hawaii Honolulu Hawaii 96822 Indian Institute of Science Education and Research Mohali SAS Nagar 140306 Indian Institute of Technology Guwahati Assam 781039 Faculty of Mathematics and Physics Charles University 121 16 Prague Budker Institute of Nuclear Physics SB RAS Novosibirsk 630090 Novosibirsk State University Novosibirsk 630090 P.N. Lebedev Physical Institute of the Russian Academy of Sciences Moscow 119991 Wayne State University Detroit Michigan 48202 Faculty of Chemistry and Chemical Engineering University of Maribor 2000 Maribor J. Stefan Institute 1000 Ljubljana INFN–Sezione di Roma Tre I-00146 Roma INFN–Sezione di Napoli I-80126 Napoli Università di Napoli Federico II I-80126 Napoli Department of Physics Fu Jen Catholic University Taipei 24205 Department of Physics National Taiwan University Taipei 10617 Max-Planck-Institut für Physik 80805 München National Central University Chung-li 32054 Department of Physics and Institute of Natural Sciences Hanyang University Seoul 04763 Korea Institute of Science and Technology Information Daejeon 34141 Yonsei University Seoul 03722 Chung-Ang University Seoul

We search for a light Higgs boson (A0) decaying into a τ+τ− or μ+μ− pair in the radiative decays of ϒ(1s). the production of ϒ(1s) mesons is tagged by ϒ(2s)→π+π−ϒ(1s) transitions, using 158×106 ϒ(2s) events accumulated with the Belle detector at the KEKB asymmetric energy electron-positron collider. No significant A0 signals in the mass range from the τ+τ− or μ+μ− threshold to 9.2 GeV/c2 are observed. We set the upper limits at 90% credibility level (C.L.) on the product branching fractions for ϒ(1s)→γA0 and A0→τ+τ− varying from 3.8×10−6 to 1.5×10−4. Our results represent an approximately twofold improvement on the current world best upper limits for the ϒ(1s)→γA0(→τ+τ−) production. For A0→μ+μ−, the upper limits on the product branching fractions for ϒ(1s)→γA0 and A0→μ+μ− are at the same level as the world average limits, and vary from 3.1×10−7 to 1.6×10−5. the upper limits at 90% credibility level on the Yukawa coupling fϒ(1s) and mixing angle sinθA0 are also given.

关键词： Branching fraction Extensions of Higgs sector Leptonic, semileptonic & radiative decays Hypothetical gauge bosons Lepton colliders

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searching for VHE gamma-ray emission associated with iceCube neutrino alerts using FACt, H.E.s.s., MAGiC, and VERitAs 37

Searching for VHE gamma-ray emission associated with IceCube...

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37th international Cosmic Ray Conference, iCRC 2021

作者： Dorner, Daniela Mezek, Gašper Kukec Abbasi, R. Ackermann, M. Adams, J. Aguilar, J.A. Ahlers, M. Ahrens, M. Alispach, C. Alves, A.A. Amin, N.M. An, R. Andeen, K. Anderson, t. Anton, G. Argüelles, C. Ashida, Y. Axani, s. Bai, X. Balagopal, A.V. Barbano, A. Barwick, s.W. Bastian, B. Basu, V. Baur, s. Bay, R. Beatty, J.J. Becker, K.-H. Becker tjus, J. Bellenghi, C. BenZvi, s. Berley, D. Bernardini, Elisa Besson, D.Z. Binder, G. Bindig, D. Blaufuss, E. Blot, s. Boddenberg, M. Bontempo, F. Borowka, J. Böser, s. Botner, O. Böttcher, J. Bourbeau, E. Bradascio, F. Braun, J. Bron, s. Brostean-Kaiser, J. Browne, s. Burgman, A. Burley, R.t. Busse, R.s. Campana, M.A. Carnie-Bronca, E.G. Chen, C. Chirkin, D. Choi, K. Clark, B.A. Clark, K. Classen, L. Coleman, A. Collin, G.H. Conrad, J.M. Coppin, P. Correa, P. Cowen, D.F. Cross, R. Dappen, C. Dave, P. De Clercq, C. DeLaunay, J.J. Dembinski, H. Deoskar, K. De Ridder, s. Desai, A. Desiati, P. de Vries, K.D. de Wasseige, G. de With, M. DeYoung, t. Dharani, s. Diaz, A. Díaz-Vélez, J.C. Dittmer, M. Dujmovic, H. Dunkman, M. DuVernois, M.A. Dvorak, E. Ehrhardt, t. Eller, P. Engel, R. Erpenbeck, H. Evans, J. Evenson, P.A. Fan, K.L. Fazely, A.R. Fiedlschuster, s. Fienberg, A.t. Filimonov, K. Finley, C. Fischer, L. Fox, D. Franckowiak, A. Friedman, E. Fritz, A. Fürst, P. Gaisser, t.K. Gallagher, J. Ganster, E. Garcia, A. Garrappa, s. Gerhardt, L. Ghadimi, A. Glaser, C. Glauch, t. Glüsenkamp, t. Goldschmidt, A. Gonzalez, J.G. Goswami, s. Grant, D. Grégoire, t. Griswold, s. Gündüz, M. Günther, C. Haack, C. Hallgren, A. Halliday, R. Halve, L. Halzen, F. Ha Minh, M. Hanson, K. Hardin, J. Harnisch, A.A. Haungs, A. Hauser, s. Hebecker, D. Helbing, K. Henningsen, F. Hettinger, E.C. Hickford, s. Hignight, J. Hill, C. Hill, G.C. Hoffman, K.D. Hoffmann, R. Hoinka, t. Hokanson-Fasig, B. Hoshina, K. Huang, F. Huber, M. Huber, t. Hultqvist, K. Hünnefeld, M. Universität Würzburg WürzburgD-97074 Germany Linnaeus University Department of Physics and Electrical Engineering Växjö35195 Sweden III. Physikalisches Institut RWTH Aachen University AachenD-52056 Germany Department of Physics University of Adelaide Adelaide5005 Australia Dept. of Physics and Astronomy University of Alaska Anchorage 3211 Providence Dr. AnchorageAK99508 United States Dept. of Physics University of Texas at Arlington Science Hall 502 Yates St. Rm 108 Box 19059 ArlingtonTX76019 United States CTSPS Clark-Atlanta University AtlantaGA30314 United States School of Physics Center for Relativistic Astrophysics Georgia Institute of Technology AtlantaGA30332 United States Dept. of Physics Southern University Baton RougeLA70813 United States Dept. of Physics University of California BerkeleyCA94720 United States Lawrence Berkeley National Laboratory BerkeleyCA94720 United States Institut für Physik Humboldt-Universität zu Berlin BerlinD-12489 Germany Fakultät für Physik & Astronomie Ruhr-Universität Bochum BochumD-44780 Germany Université Libre de Bruxelles Science Faculty CP230 BrusselsB-1050 Belgium Dienst ELEM BrusselsB-1050 Belgium Department of Physics Laboratory for Particle Physics and Cosmology Harvard University CambridgeMA02138 United States Dept. of Physics Massachusetts Institute of Technology CambridgeMA02139 United States Dept. of Physics Institute for Global Prominent Research Chiba University Chiba263-8522 Japan Department of Physics Loyola University Chicago ChicagoIL60660 United States Dept. of Physics and Astronomy University of Canterbury Private Bag 4800 Christchurch New Zealand Dept. of Physics University of Maryland College ParkMD20742 United States Dept. of Astronomy Ohio State University ColumbusOH43210 United States Dept. of Physics Center for Cosmology and Astro-Particle Physics Ohio State University ColumbusOH43210 United States Niels Bohr Institute University of Cop

the realtime follow-up of neutrino events is a promising approach to search for astrophysical neutrino sources. it has so far provided compelling evidence for a neutrino poi.t.source: the flaring gamma-ray blazar tXs 0506+056 observed in coincidence with the high-energy neutrino iceCube-170922A detected by iceCube. the detection of very-high-energy gamma rays (VHE, E > 100 GeV) from this source helped establish the coincidence and constrained the modeling of the blazar emission at the time of the iceCube event. the four major imaging atmospheric Cherenkov telescope arrays (iACts) - FACt, H.E.s.s., MAGiC, and VERitAs - operate an active follow-up program of target-of-opportunity observations of neutrino alerts sent by iceCube. this program has two main components. One are the observations of known gamma-ray sources around which a cluster of candidate neutrino events has been identified by iceCube (Gamma-ray Follow-Up, GFU). second one is the follow-up of single high-energy neutrino candidate events of potential astrophysical origin such as iceCube-170922A. GFU has been recently upgraded by iceCube in collaboration with the iACt groups. We present here recent results from the iACt follow-up programs of iceCube neutrino alerts and a description of the upgraded iceCube GFU system. © Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 international License (CC BY-NC-ND 4.0)

关键词： Gamma rays

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Combination of Measurements of the top Quark Mass from Data Collected by the AtLAs and CMs Experiments at s=7 and 8 teV

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Physical Review Letters 2024年第26期132卷 261902-261902页

作者： A. Hayrapetyan A. tumasyan W. Adam J. W. Andrejkovic t. Bergauer s. Chatterjee K. Damanakis M. Dragicevic P. s. Hussain M. Jeitler N. Krammer A. Li D. Liko i. Mikulec J. schieck R. schöfbeck D. schwarz M. sonawane s. templ W. Waltenberger C.-E. Wulz M. R. Darwish t. Janssen P. Van Mechelen E. s. Bols J. D’Hondt s. Dansana A. De Moor M. Delcourt H. El Faham s. Lowette i. Makarenko D. Müller A. R. sahasransu s. tavernier M. tytgat s. Van Putte D. Vannerom B. Clerbaux G. De Lentdecker L. Favart D. Hohov J. Jaramillo A. Khalilzadeh K. Lee M. Mahdavikhorrami A. Malara s. Paredes L. Pétré N. Postiau L. thomas M. Vanden Bemden C. Vander Velde P. Vanlaer M. De Coen D. Dobur Y. Hong J. Knolle L. Lambrecht G. Mestdach C. Rendón A. samalan K. skovpen N. Van Den Bossche J. van der Linden L. Wezenbeek A. Benecke G. Bruno C. Caputo C. Delaere i. s. Donertas A. Giammanco K. Jaffel sa. Jain V. Lemaitre J. Lidrych P. Mastrapasqua K. Mondal t. t. tran s. Wertz G. A. Alves E. Coelho C. Hensel t. Menezes De Oliveira A. Moraes P. Rebello teles M. soeiro W. L. Aldá Júnior M. Alves Gallo Pereira M. Barroso Ferreira Filho H. Brandao Malbouisson W. Carvalho J. Chinellato E. M. Da Costa G. G. Da silveira D. De Jesus Damiao s. Fonseca De souza R. Gomes De souza J. Martins C. Mora Herrera K. Mota Amarilo L. Mundim H. Nogima A. santoro A. sznajder M. thiel A. Vilela Pereira C. A. Bernardes L. Calligaris t. R. Fernandez Perez tomei E. M. Gregores P. G. Mercadante s. F. Novaes B. Orzari sandra s. Padula A. Aleksandrov G. Antchev R. Hadjiiska P. iaydjiev M. Misheva M. shopova G. sultanov A. Dimitrov L. Litov B. Pavlov P. Petkov A. Petrov E. shumka s. Keshri s. thakur t. Cheng Q. Guo t. Javaid L. Yuan Z. Hu J. Liu K. Yi G. M. Chen H. s. Chen M. Chen F. iemmi C. H. Jiang A. Kapoor H. Liao Z.-A. Liu R. sharma J. N. song J. tao C. Wang J. Wang Z. Wang H. Zhang A. Agapitos Y. Ban A. Levin C. Li Q. Li Y. Mao s. J. Qian X. sun D. Wang H. Yang L. Zhang C. Zhou Z. You N. Lu G. Bauer X. Gao D. Leggat H. Okawa Y. Zhang Z. Lin C. Lu M. Xiao C. Avila D. A. Yerevan Physics Institute Yerevan Armenia Institut für Hochenergiephysik Vienna Austria Indian Institute of Technology Madras Madras India APC Université Paris Cité CNRS/IN2P3 Paris France Universiteit Antwerpen Antwerpen Belgium Vrije Universiteit Brussel Brussel Belgium Université Libre de Bruxelles Bruxelles Belgium Korea University Seoul Korea 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 IJCLab Université Paris-Saclay CNRS/IN2P3 91405 Orsay France 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 Department of Physics Oxford University Oxford United Kingdom School of Physics and Astronomy Shanghai Jiao Tong University Key Laboratory for Particle Astrophysics and Cosmology (MOE) SKLPPC Shanghai China Department of Physics Chinese University of Hong Kong Shatin N.T. Hong Kong China Department of Physics University of Michigan Ann Arbor Michigan USA State Key Laboratory of Nuclear Physics and Technology Peking University Beijing China Department of Modern Physics and State Key Laboratory of Particle Detection and Electronics University of Science and Technology of China Hefei China Department of Physics Nanjing University Nanjing China Sun Yat-Sen University Guangzhou China University of Science and Technology of China Hefei China Nanjing Normal University Nanjing China Institute of Modern Physics and Key Laboratory of Nuclear Physics and Ion-beam Application (MOE)—Fudan University Shanghai China Zhe

A combination of fifteen top quark mass measurements performed by the AtLAs and CMs experiments at the LHC is presented. the datasets used correspond to an integrated luminosity of up to 5 and 20 fb−1 of proton-proton collisions at center-of-mass energies of 7 and 8 teV, respectively. the combination includes measurements in top quark pair events that exploit both the semileptonic and hadronic decays of the top quark, and a measurement using events enriched in single top quark production via the electroweak t channel. the combination accounts for the correlations between measurements and achieves an improvement in the total uncertainty of 31% relative to the most precise input measurement. the result is mt=172.52±0.14(stat)±0.30(syst) GeV, with a total uncertainty of 0.33 GeV.

关键词： top quark Hadron colliders

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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. 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. 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. 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. 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 observed;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 available: see fulltext.]. © 2023, the Author(s).

关键词： CP Violation Hadron-Hadron scattering Higgs Physics

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Multi-year characterisation of the broad-band emission from the intermittent extreme BL Lac 1Es 2344+514

arXiv

引用

arXiv 2023年

作者： Abe, H. Abe, s. Acciari, V.A. Agudo, i. Aniello, t. Ansoldi, s. Antonelli, L.A. Arbet Engels, A. Arcaro, C. Artero, M. Asano, K. Baack, D. Babić, A. Baquero, A. Barres de Almeida, U. Batković, i. Baxter, J. Becerra González, J. Bernardini, E. Bernete, J. Berti, A. Besenrieder, J. Bigongiari, C. Biland, A. Blanch, O. Bonnoli, G. Bošnjak, Ž. Burelli, i. Busetto, G. Campoy-Ordaz, A. Carosi, A. Carosi, R. Carretero-Castrillo, M. Castro-tirado, A.J. Chai, Y. Cifuentes, A. Cikota, s. Colombo, E. Contreras, J.L. Cortina, J. Covino, s. D’Amico, G. D’Ammando, F. D’Elia, V. Da Vela, P. Dazzi, F. De Angelis, A. De Lotto, B. Del Popolo, A. Delfino, M. Delgado, J. Delgado Mendez, C. Depaoli, D. Di Pierro, F. Di Venere, L. Dominis Prester, D. Dorner, D. Doro, M. Elsaesser, D. Emery, G. Escudero, J. Fariña, L. Fattorini, A. Foffano, L. Font, L. Fukami, s. Fukazawa, Y. García López, R.J. Gasparyan, s. Gaug, M. Giesbrecht Paiva, J.G. Giglietto, N. Giordano, F. Gliwny, P. Grau, R. Green, J.G. Hadasch, D. Hahn, A. Heckmann, L. Herrera, J. Hrupec, D. Hütten, M. imazawa, R. inada, t. iotov, R. ishio, K. Jiménez Martínez, i. Jormanainen, J. Kerszberg, D. Kluge, G.W. Kobayashi, Y. Kouch, P.M. Kubo, H. Kushida, J. Láinez Lezáun, M. Lamastra, A. Leone, F. Lindfors, E. Linhoff, L. Lombardi, s. Longo, F. López-Moya, M. López-Oramas, A. Loporchio, s. Lorini, A. Machado de Oliveira Fraga, B. Majumdar, P. Makariev, M. Maneva, G. Mang, N. Manganaro, M. Mariotti, M. Martínez, M. Martínez-Chicharro, M. Mas-Aguilar, A. Mazin, D. Menchiari, s. Mender, s. Miceli, D. Miener, t. Miranda, J.M. Mirzoyan, R. Molero González, M. Molina, E. Mondal, H.A. Moralejo, A. Morcuende, D. Nakamori, t. Nanci, C. Neustroev, V. Nigro, C. Nikolić, L. Nishijima, K. Njoh Ekoume, t. Noda, K. Nozaki, s. Ohtani, Y. Okumura, A. Otero-santos, J. Paiano, s. Palatiello, M. Paneque, D. Paoletti, R. Paredes, J.M. Pavlović, D. Persic, M. Pihet, M. Pirola, G. Podobnik, F. Prada Moroni, P.G. The University of Tokyo Chiba Kashiwa277-8582 Japan Instituto de Astrofísica de Canarias Dpto. de Astrofísica Universidad de La Laguna Tenerife La LagunaE-38200 Spain Instituto de Astrofísica de Andalucía-CSIC Glorieta de la Astronomía s/n Granada18008 Spain RomeI-00136 Italy Università di Udine INFN Trieste UdineI-33100 Italy Max-Planck-Institut für Physik MünchenD-80805 Germany Università di Padova INFN PadovaI-35131 Italy The Barcelona InsINAF - Istituto di Radioastronomia Via Gobetti 101 BolognaI-40129 Italy Bellaterra BarcelonaE-08193 Spain Technische Universität Dortmund DortmundD-44221 Germany Zagreb10000 Croatia IPARCOS Institute EMFTEL Department Universidad Complutense de Madrid MadridE-28040 Spain Rio de Janeiro22290-180 Brazil Centro de Investigaciones Energéticas Medioambientales y Tecnológicas MadridE-28040 Spain ETH Zürich ZürichCH-8093 Switzerland Departament de Física CERES-IEEC Universitat Autònoma de Barcelona BellaterraE-08193 Spain Università di Pisa INFN Pisa PisaI-56126 Italy Universitat de Barcelona ICCUB IEEC-UB BarcelonaE-08028 Spain Department for Physics and Technology University of Bergen Norway INFN MAGIC Group: INFN Sezione di Catania Dipartimento di Fisica e Astronomia University of Catania CataniaI-95123 Italy INFN MAGIC Group: INFN Sezione di Torino Università degli Studi di Torino TorinoI-10125 Italy INFN MAGIC Group: INFN Sezione di Bari Dipartimento Interateneo di Fisica Università e del Politecnico di Bari BariI-70125 Italy Croatian MAGIC Group University of Rijeka Faculty of Physics Rijeka51000 Croatia University of Geneva Chemin d’Ecogia 16 VersoixCH-1290 Switzerland Japanese MAGIC Group: Physics Program Graduate School of Advanced Science and Engineering Hiroshima University Hiroshima739-8526 Japan Armenian MAGIC Group: ICRANet-Armenia Yerevan0019 Armenia University of Lodz Faculty of Physics and Applied Informatics Department of Astrophysics Lodz90-236 Pola

Aims. the BL Lac 1Es 2344+514 is known for temporary extreme properties (e.g., a shift of the synchrotron spectral energy distribution (sED) peak energy νsynch,p above 1 keV). While those extreme states were so far observed only during high flux levels, additional multi-year observing campaigns are required to achieve a coherent picture. Here, we report the longest investigation of the source from radio to very high energy (VHE) performed so far, focusing on a systematic characterisation of the intermittent extreme states. Methods. We organised a monitoring campaign covering a 3-year period from 2019 to 2021. More than ten instruments participated in the observations in order to cover the emission from radio to VHE. in particular, sensitive X-ray measurements by XMM-Newton, NustAR, and Astrosat took place simultaneously with multi-hour MAGiC observations, providing an unprecedented constraint of the two sED components for this blazar. Results. While our results confirm that 1Es 2344+514 typically exhibits νsynch,p > 1 keV during elevated flux periods, we also find periods where the extreme state coincides with low flux activity. A strong spectral variability thus happens in the quiescent state, and is likely caused by an increase of the electron acceleration efficiency without a change in the electron injection luminosity. On the other hand, we also report a strong X-ray flare (among the brightest for 1Es 2344+514) without a significant shift of νsynch,p. During this particular flare, the X-ray spectrum is among the softest of the campaign. it unveils complexity in the spectral evolution, where the common "harder-when-brighter" trend observed in BL Lacs is violated. By combining swift-XRt and swift-UVOt measurements during a low and hard X-ray state, we find an excess of the UV flux with respect to an extrapolation of the X-ray spectrum to lower energies. this "UV excess" implies that at least two regions contribute significantly to the infrared/optical/ultraviolet/

关键词： Galaxies

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Flow and thermal modelling of the argon volume in the Darkside-20k tPC

arXiv

引用

arXiv 2025年

作者： Acerbi, F. Adhikari, P. Agnes, P. Ahmad, i. Albergo, s. Albuquerque, i.F. Alexander, t. Alton, A.K. Amaudruz, P. Angiolilli, M. Aprile, E. AtzoriCorona, M. Auty, D.J. Ave, M. Avetisov, i.C. Azzolini, O. Back, H.O. Balmforth, Z. Barrado Olmedo, A. Barrillon, P. Batignani, G. Bhowmick, P. Bloem, M. Blua, s. Bocci, V. Bonivento, W. Bottino, B. Boulay, M.G. Buchowicz, A. Bussino, s. Busto, J. Cadeddu, M. Cadoni, M. Calabrese, R. Camillo, V. Caminata, A. Canci, N. Caravati, M. Cárdenas-Montes, M. Cargioli, N. Carlini, M. Castellani, A. Castello, P. Cavalcante, P. Cebrian, s. Chashin, s. Chepurnov, A. Choudhary, s. Cifarelli, L. Cleveland, B. Coadou, Y. Cocco, V. Colaiuda, D. CondeVilda, E. Consiglio, L. Corbett, J. Costa, B.s. Czubak, M. D’Aniello, M. D’Auria, s. Da Rocha Rolo, M.D. Dainty, A. Darbo, G. Davini, s. deAsmundis, R. De Cecco, s. Dellacasa, G. Derbin, A.V. Devoto, A. DiCapua, F. Di Noto, L. Di stefano, P. Dias, L.K. Díaz Mairena, D. Dionisi, C. Dolganov, G. Dordei, F. Dronik, V. Dylon, F. Elersich, A. Ellingwood, E. Erjavec, t. Fearon, N. Fernandez Diaz, M. Ficorella, A. Fiorillo, G. Franchini, P. Franco, D. Frandini Gatti, H. Frolov, E. Gabriele, F. Gahan, D. Galbiati, C. Galiński, G. Gallina, G. Gallus, G. Garbini, M. Garcia Abia, P. Gawdzik, A. Gendotti, A. Giovanetti, G.K. Goicoechea Casanueva, V. Gola, A. Grandi, L. Grauso, G. Grilli di Cortona, G. Grobov, A. Gromov, M. Gulino, M. Hackett, B.R. Hallin, A.L. Hamer, A. Haranczyk, M. Harrop, B. Hessel, t. Hollingham, J. Horikawa, s. Hu, J. Hubaut, F. Huff, D. Hugues, t. Hungerford, E.V. ianni, A. ippolito, V. Jamil, A. Jillings, C. Keloth, R. Kemmerich, N. Kemp, A. Kimura, M. Klenin, A. Kondo, K. Korga, G. Kotsiopoulou, L. Koulosousas, s. Kubankin, A. Kunzé, P. Kuss, M. Kuźniak, M. Kuzwa, M. La Commara, M. Lai, M. Le Guirriec, E. Leason, E. Leoni, A. Lidey, L. Lipp, J. Lissia, M. Luzzi, L. Lychagina, O. Macfadyen, O. Machulin, i.N. Manecki, s. Fondazione Bruno Kessler Povo38123 Italy Department of Physics Carleton University OttawaONK1S 5B6 Canada Gran Sasso Science Institute L’Aquila67100 Italy Assergi67100 Italy AstroCeNT Nicolaus Copernicus Astronomical Center the Polish Academy of Sciences Warsaw00-614 Poland Università of Catania Catania95124 Italy INFN Catania Catania95121 Italy Instituto de Física Universidade de São Paulo São Paulo05508-090 Brazil Pacific Northwest National Laboratory RichlandWA99352 United States Physics Department Augustana University Sioux FallsSD57197 United States TRIUMF 4004 Wesbrook Mall VancouverBCV6T 2A3 Canada Physics Department Columbia University New YorkNY10027 United States INFN Cagliari Cagliari09042 Italy Physics Department Università degli Studi di Cagliari Cagliari09042 Italy Department of Physics University of Alberta EdmontonABT6G 2R3 Canada Mendeleev University of Chemical Technology Moscow125047 Russia INFN Laboratori Nazionali di Legnaro Legnaro Padova35020 Italy Institute of Experimental Physics University of Hamburg Hamburg22761 Germany CIEMAT Centro de Investigaciones Energéticas Medioambientales y Tecnológicas Madrid28040 Spain Centre de Physique des Particules de Marseille Aix Marseille Univ CNRS IN2P3 CPPM Marseille France Physics Department Università degli Studi di Pisa Pisa56127 Italy INFN Pisa Pisa56127 Italy University of Oxford OxfordOX1 2JD United Kingdom Rutherford Appleton Laboratory Particle Physics Department Harwell Oxford DidcotOX11 0QX United Kingdom INFN Torino Torino10125 Italy Department of Electronics and Telecommunications Politecnico di Torino Torino10129 Italy INFN Sezione di Roma Roma00185 Italy Physics Department Università degli Studi di Genova Genova16146 Italy INFN Genova Genova16146 Italy Institute of Radioelectronics and Multimedia Technology Faculty of Electronics and Information Technology Warsaw University of Technology Warsaw00-661 Poland INFN Roma

the Darkside-20k dark matter experiment, currently under construction at LNGs, features a dual-phase time projection chamber (tPC) with a ∼50 t argon target from an underground well. At this scale, it is crucial to optimise the argon flow pattern for efficient target purification and for fast distribution of internal gaseous calibration sources with lifetimes of the order of hours. to this end, we have performed computational fluid dynamics simulations and heat transfer calculations. the residence time distribution shows that the detector is well-mixed on time-scales of the turnover time (∼40 d). Notably, simulations show that despite a two-order-of-magnitude difference between the turnover time and the half-life of 83mKr of 1.83 h, source atoms have the highest probability to reach the centre of the tPC 13 min after their injection, allowing for a homogeneous distribution before undergoing radioactive decay. We further analyse the thermal aspects of dual-phase operation and define the requirements for the formation of a stable gas pocket on top of the liquid. We find a best-estimate value for the heat transfer rate at the liquid-gas interface of 62 W with an upper limit of 144 W and a minimum gas pocket inlet temperature of 89 K to avoid condensation on the acrylic anode. this study also informs the placement of liquid inlets and outlets in the tPC. the presented techniques are widely applicable to other large-scale, noble-liquid detectors. Copyright © 2025, the Authors. All rights reserved.

关键词： ionization chambers

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tEss Data for Asteroseismology (t’DA) stellar Variability Classification Pipeline: set-Up and Application to the Kepler Q9 Data

arXiv

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arXiv 2021年

作者： Audenaert, J. Kuszlewicz, J.s. Handberg, R. tkachenko, A. Armstrong, D. Hon, M. Kgoadi, R. Lund, M.N. Bell, K.J. Bugnet, L. Bowman, D.M. Johnston, C. García, R.A. stello, D. Molnár, L. Plachy, E. Buzasi, D. Aerts, C. Institute of Astronomy KU Leuven Celestijnenlaan 200D Leuven3001 Belgium Landessternwarte Zentrum für Astronomie der Universität Heidelberg Königstuhl 12 Heidelberg69117 Germany Stellar Astrophysics Centre Department of Physics and Astronomy Aarhus University Ny Munkegade 120 Aarhus CDK-8000 Denmark Department of Physics University of Warwick Gibbet Hill Road CoventryCV4 7AL United Kingdom Centre for Exoplanets and Habitability University of Warwick Gibbet Hill Road CoventryCV4 7AL United Kingdom Institute for Astronomy University of Hawai‘i 2680 Woodlawn Drive HonoluluHI96822 United States School of Physics University of New South Wales SydneyNSW2052 Australia College of Science and Engineering James Cook University Townsville4811 Australia DIRAC Institute Department of Astronomy University of Washington SeattleWA98195 United States NSF Astronomy and Astrophysics Flatiron Institute Simons Foundation 162 Fifth Ave New YorkNY10010 United States AIM CEA CNRS Université Paris-Saclay Université Paris Diderot Sorbonne Paris Cité Gif-sur-YvetteF-91191 France Department of Astrophysics IMAPP Radboud University Nijmegen NijmegenNL-6500 GL Netherlands School of Physics University of Sydney SydneyNSW2006 Australia Konkoly Thege Miklós út 15-17 BudapestH-1121 Hungary MTA CSFK Lendület Near-Field Cosmology Research Group Konkoly Thege Miklós út 15-17 Budapest1121 Hungary ELTE Eötvös Loránd University Institute of Physics 1117 Pázmány Péter sétány 1/A Budapest Hungary Department of Chemistry and Physics Florida Gulf Coast University 10501 FGCU Blvd. S. Fort MyersFL33965 United States Max Planck Institute for Astronomy Koenigstuhl 17 Heidelberg69117 Germany

the NAsA transiting Exoplanet survey satellite (tEss) is observing tens of millions of stars with time spans ranging from ∼ 27 days to about 1 year of continuous observations. this vast amount of data contains a wealth of information for variability, exoplanet, and stellar astrophysics studies but requires a number of processing steps before it can be fully utilized. in order to efficiently process all the tEss data and make it available to the wider scientific community, the tEss Data for Asteroseismology working group, as part of the tEss Asteroseismic science Consortium, has created an automated open-source processing pipeline to produce light curves corrected for systematics from the short- and long-cadence raw photometry data and to classify these according to stellar variability type. We will process all stars down to a tEss magnitude of 15. this paper is the next in a series detailing how the pipeline works. Here, we present our methodology for the automatic variability classification of tEss photometry using an ensemble of supervised learners that are combined into a metaclassifier. We successfully validate our method using a carefully constructed labelled sample of Kepler Q9 light curves with a 27.4 days time span mimicking single-sector tEss observations, on which we obtain © 2021, CC BY.

关键词： supervised learning

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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 Breur, 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 unstable isotopes have long been 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 possible 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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search for proton decay via p → e+η and p → µ+η with a 0.37 Mton-year exposure of super-Kamiokande

arXiv

引用

arXiv 2024年

作者： taniuchi, N. Abe, K. Abe, s. Asaoka, Y. Bronner, C. Harada, M. Hayato, Y. Hiraide, K. Hosokawa, K. ieki, K. ikeda, M. Kameda, J. Kanemura, Y. Kaneshima, R. Kashiwagi, Y. Kataoka, Y. Miki, s. Mine, s. Miura, M. Moriyama, s. Nakahata, M. Nakayama, s. Noguchi, Y. Pronost, G. Okamoto, K. sato, K. sekiya, H. shiba, H. shimizu, K. shiozawa, M. sonoda, Y. suzuki, Y. takeda, A. takemoto, Y. takenaka, A. tanaka, H. Watanabe, s. Yano, t. Kajita, t. Okumura, K. tashiro, t. tomiya, t. Wang, X. Yoshida, s. Megias, G.D. Fernandez, P. Labarga, L. Ospina, N. Zaldivar, B. Pointon, B.W. Kearns, E. Mirabito, J. Raaf, J.L. Wan, L. Wester, t. Bian, J. Griskevich, N.J. Kropp, W.R. Locke, s. smy, M.B. sobel, H.W. takhistov, V. Yankelevich, A. Hill, J. Jang, M.C. Kim, J.Y. Lee, s.H. Lim, i.t. Moon, D.H. Park, R.G. Yang, B.s. Bodur, B. scholberg, K. Walter, C.W. Beauchêne, A. Bernard, L. Coffani, A. Drapier, O. El Hedri, s. Giampaolo, A. Mueller, th.A. santos, A.D. Paganini, P. Rogly, R. Nakamura, t. Jang, J.s. Machado, L.N. Learned, J.G. Choi, K. iovine, N. Cao, s. Anthony, L.H.V. Martin, D. Prouse, N.W. scott, M. sztuc, A.A. Uchida, Y. Berardi, V. Calabria, N.F. Catanesi, M.G. Radicioni, E. Langella, A. De Rosa, G. Collazuol, G. Feltre, M. iacob, F. Lamoureux, M. Mattiazzi, M. Ludovici, L. Gonin, M. Périssé, L. Quilain, B. Fujisawa, C. Horiuchi, s. Kobayashi, M. Liu, Y.M. Maekawa, Y. Nishimura, Y. Okazaki, R. Akutsu, R. Friend, M. Hasegawa, t. ishida, t. Kobayashi, t. Jakkapu, M. Matsubara, t. Nakadaira, t. Nakamura, K. Oyama, Y. Yrey, A. Portocarrero sakashita, K. sekiguchi, t. tsukamoto, t. Bhuiyan, N. Boschi, t. Burton, G.t. Di Lodovico, F. Gao, J. Goldsack, A. Katori, t. Migenda, J. Ramsden, R.M. taani, M. Xie, Z. Zsoldos, s. Kotsar, Y. Ozaki, H. suzuki, A.t. takagi, Y. takeuchi, Y. Yamamoto, s. Zhong, H. Feng, J. Feng, L. Han, s. Hu, J.R. Hu, Z. Kawaue, M. Kikawa, t. Mori, M. Nakaya, t. Kamioka Observatory Institute for Cosmic Ray Research University of Tokyo Kamioka Gifu506-1205 Japan Research Center for Cosmic Neutrinos Institute for Cosmic Ray Research University of Tokyo Chiba Kashiwa277-8582 Japan Institute for Cosmic Ray Research University of Tokyo Chiba Kashiwa277-8582 Japan Department of Theoretical Physics University Autonoma Madrid Madrid28049 Spain Department of Physics Boston University BostonMA02215 United States Department of Physics British Columbia Institute of Technology BurnabyBCV5G 3H2 Canada Department of Physics and Astronomy University of California Irvine IrvineCA92697-4575 United States Department of Physics California State University Dominguez Hills CarsonCA90747 United States Institute for Universe and Elementary Particles Chonnam National University Gwangju61186 Korea Republic of Department of Physics Duke University DurhamNC27708 United States Ecole Polytechnique IN2P3 CNRS Laboratoire Leprince-Ringuet PalaiseauF-91120 France Department of Physics Gifu University Gifu Gifu501-1193 Japan GIST College Gwangju Institute of Science and Technology Gwangju500-712 Korea Republic of School of Physics and Astronomy University of Glasgow GlasgowG12 8QQ United Kingdom Department of Physics and Astronomy University of Hawaii HonoluluHI96822 United States Daejeon34126 Korea Republic of Institute For Interdisciplinary Research in Science and Education ICISE Quy Nhon55121 Viet Nam Department of Physics Imperial College London LondonSW7 2AZ United Kingdom Dipartimento Interuniversitario di Fisica INFN Sezione di Bari Università e Politecnico di Bari BariI-70125 Italy Dipartimento di Fisica INFN Sezione di Napoli Università di Napoli NapoliI-80126 Italy Dipartimento di Fisica INFN Sezione di Padova Università di Padova PadovaI-35131 Italy INFN Sezione di Roma Università di Roma "La Sapienza" RomaI-00185 Italy International Laboratory for Astrophysics Neutrino and Cosmology

A search for proton decay into e+/µ+ and a η meson has been performed using data from a 0.373 Mton·year exposure (6050.3 live days) of super-Kamiokande. Compared to previous searches this work introduces an improved model of the intranuclear η interaction cross section, resulting in a factor of two reduction in uncertainties from this source and ∼10% increase in signal efficiency. No significant data excess was found above the expected number of atmospheric neutrino background events resulting in no indication of proton decay into either mode. Lower limits on the proton partial lifetime of 1.4 × 1034 years for p → e+η and 7.3 × 1033 years for p → µ+η at the 90% C.L. were set. these limits are around 1.5 times longer than our previous study and are the most stringent to date. © 2024, CC BY.

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