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Towards a consensus atlas of human and mouse adipose tissue at single-cell resolution

Nature metabolism 2025年第5期7卷 2025 May 13页

作者： Anne Loft margo P Emont Ada Weinstock Adeline Divoux Adhideb Ghosh Allon Wagner Ann V Hertzel Babukrishna maniyadath Bart Deplancke Boxiang Liu Camilla Scheele Carey Lumeng Changhai Ding Chenkai ma Christian Wolfrum Clarissa Strieder-Barboza Congru Li Danh D Truong David A Bernlohr Elisabet Stener-Victorin Erin E Kershaw Esti Yeger-Lotem Farnaz Shamsi Hannah X Hui Henrique Camara Jiawei Zhong Joanna Kalucka Joseph A Ludwig Julie A Semon Jutta Jalkanen Katie L Whytock Kyle D Dumont Lauren m Sparks Lindsey A muir Lingzhao Fang Lucas massier Luis R Saraiva marc D Beyer marc G Jeschke marcelo A mori mariana Boroni martin J Walsh mary-Elizabeth Patti matthew D Lynes matthias Blüher mikael Rydén Natnael Hamda Nicole L Solimini Niklas mejhert Peng Gao Rana K Gupta Rinki murphy Saeed Pirouzpanah Silvia Corvera Su'an Tang Swapan K Das Søren F Schmidt Tao Zhang Theodore m Nelson Timothy E O'Sullivan Vissarion Efthymiou Wenjing Wang Yihan Tong Yu-Hua Tseng Susanne mandrup Evan D Rosen Center for Functional Genomics and Tissue Plasticity (ATLAS) Department of Biochemistry and Molecular Biology University of Southern Denmark (SDU) Odense Denmark. anlo@bmb.sdu.dk. Section of Endocrinology Diabetes and Metabolism University of Chicago Chicago IL USA. margo@uchicago.edu. Department of Medicine Section of Genetic Medicine University of Chicago Chicago IL USA. Translational Research Institute AdventHealth Orlando FL USA. Department of Health Sciences and Technology Institute of Food Nutrition and Health ETH Zurich Schwerzenbach Switzerland. Department of Electrical Engineering and Computer Sciences University of California Berkeley Berkeley CA USA. Department of Molecular and Cell Biology University of California Berkeley Berkeley CA USA. Center for Computational Biology University of California Berkeley Berkeley CA USA. Department of Biochemistry Molecular Biology and Biophysics Institute on the Biology of Aging and Metabolism The University of Minnesota-Twin Cities Minneapolis MN USA. Center for Functional Genomics and Tissue Plasticity (ATLAS) Department of Biochemistry and Molecular Biology University of Southern Denmark (SDU) Odense Denmark. Laboratory of Systems Biology and Genetics Institute of Bioengineering School of Life Sciences École Polytechnique Fédérale de Lausanne (EPFL) Lausanne Switzerland. Department of Pharmacy and Pharmaceutical Sciences Faculty of Science National University of Singapore Singapore Singapore. Department of Biomedical Informatics Yong Loo Lin School of Medicine National University of Singapore Singapore Singapore. Genome Institute of Singapore (GIS) Agency for Science Technology and Research (A*STAR) Singapore Singapore. Precision Medicine Translational Research Programme Yong Loo Lin School of Medicine National University of Singapore Singapore Singapore. Cardiovascular-Metabolic Disease Translational Research Programme Yong Loo Lin School of Medicine National University of Singapore Singapor

Adipose tissue (AT) is a complex connective tissue with a high relative proportion of adipocytes, which are specialized cells with the ability to store lipids in large droplets. AT is found in multiple discrete depots throughout the body, where it serves as the primary repository for excess calories. In addition, AT has an important role in functions as diverse as insulation, immunity and regulation of metabolic homeostasis. The Human Cell Atlas Adipose Bionetwork was established to support the generation of single-cell atlases of human AT as well as the development of unified approaches and consensus for cell annotation. Here, we provide a first roadmap from this bionetwork, including our suggested cell annotations for humans and mice, with the aim of describing the state of the field and providing guidelines for the production, analysis, interpretation and presentation of AT single-cell data.

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Erratum to: measurement of differential cross sections and W+/W− cross-section ratios for W boson production in association with jets at = 8 TeV with the ATLAS detector

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Journal of High Energy Physics 2020年第10期2020卷 1-20页

作者： Aaboud, m. Aad, G. Abbott, B. Abdinov, O. Abeloos, B. Abidi, S. H. AbouZeid, O. S. Abraham, N. L. Abramowicz, H. Abreu, H. Abreu, R. Abulaiti, Y. Acharya, B. S. Adachi, S. Adamczyk, L. Adelman, J. Adersberger, m. Adye, T. Affolder, A. A. Afik, Y. Agheorghiesei, C. Aguilar-Saavedra, J. A. Ahlen, S. P. Ahmadov, F. Aielli, G. Akatsuka, S. Akerstedt, H. Åkesson, T. P. A. Akilli, E. Akimov, A. V. Alberghi, G. L. Albert, J. Albicocco, P. Alconada Verzini, m. J. Alderweireldt, S. C. Aleksa, m. Aleksandrov, I. N. Alexa, C. Alexander, G. Alexopoulos, T. Alhroob, m. Ali, B. Aliev, m. Alimonti, G. Alison, J. Alkire, S. P. Allbrooke, B. m. m. Allen, B. W. Allport, P. P. Aloisio, A. Alonso, A. Alonso, F. Alpigiani, C. Alshehri, A. A. Alstaty, m. I. Alvarez Gonzalez, B. Álvarez Piqueras, D. Alviggi, m. G. Amadio, B. T. Amaral Coutinho, Y. Amelung, C. Amidei, D. Amor Dos Santos, S. P. Amoroso, S. Anastopoulos, C. Ancu, L. S. Andari, N. Andeen, T. Anders, C. F. Anders, J. K. Anderson, K. J. Andreazza, A. Andrei, V. Angelidakis, S. Angelozzi, I. Angerami, A. Anisenkov, A. V. Anjos, N. Annovi, A. Antel, C. Antonelli, m. Antonov, A. Antrim, D. J. Anulli, F. Aoki, m. Aperio Bella, L. Arabidze, G. Arai, Y. Araque, J. P. Araujo Ferraz, V. Arce, A. T. H. Ardell, R. E. Arduh, F. A. Arguin, J-F. Argyropoulos, S. Arik, m. Armbruster, A. J. Armitage, L. J. Arnaez, O. Arnold, H. Arratia, m. Arslan, O. Artamonov, A. Artoni, G. Artz, S. Asai, S. Asbah, N. Ashkenazi, A. Asquith, L. Assamagan, K. Astalos, R. Atkinson, m. Atlay, N. B. Augsten, K. Avolio, G. Axen, B. Ayoub, m. K. Azuelos, G. Baas, A. E. Baca, m. J. Bachacou, H. Bachas, K. Backes, m. Bagnaia, P. Bahmani, m. Bahrasemani, H. Baines, J. T. Bajic, m. Baker, O. K. Bakker, P. J. Baldin, E. m. Balek, P. Balli, F. Balunas, W. K. Banas, E. Bandyopadhyay, A. Banerjee, Sw. Bannoura, A. A. E. Barak, L. Barberio, E. L. Barberis, D. Barbero, m. Barillari, T. Barisits, m-S Barkeloo, J. T. Barklow, T. Barlow, N. Barnes, S. L. Barnett, B. m. Barnett, R. m. Barnovska-Blenessy, Z. Baroncelli, A. Bar Faculté des Sciences Université Mohamed Premier and LPTPM Oujda Morocco CPPM Aix-Marseille Université and CNRS/IN2P3 Marseille France Homer L. Dodge Department of Physics and Astronomy University of Oklahoma Norman United States of America Institute of Physics Azerbaijan Academy of Sciences Baku Azerbaijan LAL Univ. Paris-Sud CNRS/IN2P3 Université Paris-Saclay Orsay France Department of Physics University of Toronto Toronto Canada Santa Cruz Institute for Particle Physics University of California Santa Cruz Santa Cruz United States of America Department of Physics and Astronomy University of Sussex Brighton United Kingdom Raymond and Beverly Sackler School of Physics and Astronomy Tel Aviv University Tel Aviv Israel Department of Physics Technion: Israel Institute of Technology Haifa Israel Center for High Energy Physics University of Oregon Eugene United States of America Department of Physics Stockholm University Stockholm Sweden The Oskar Klein Centre Stockholm Sweden INFN Gruppo Collegato di Udine Sezione di Trieste Udine Italy ICTP Trieste Italy Department of Physics King’s College London London United Kingdom International Center for Elementary Particle Physics and Department of Physics The University of Tokyo Tokyo Japan AGH University of Science and Technology Faculty of Physics and Applied Computer Science Krakow Poland Department of Physics Northern Illinois University DeKalb United States of America Fakultät für Physik Ludwig-Maximilians-Universität München München Germany Particle Physics Department Rutherford Appleton Laboratory Didcot United Kingdom Department of Physics Alexandru Ioan Cuza University of Iasi Iasi Romania Laboratório de Instrumentação e Física Experimental de Partículas — LIP Lisboa Portugal Departamento de Fisica Teorica y del Cosmos Universidad de Granada Granada Portugal Department of Physics Boston University Boston United States of America Joint Institute for Nuclear Research JINR Dubna Dubna Russia IN

Two additions impacting tables 3 and 4 in ref. [1] are presented in the following. No significant impact is found for other results or figures in ref. [1].

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Erratum to: measurements of top-quark pair differential and double-differential cross-sections in the +jets channel with pp collisions at TeV using the ATLAS detector [Eur. Phys. J. C 79 (2019) 1028]

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The European Physical Journal C 2020年第11期80卷 1-23页

作者： Aad, G. Abbott, B. Abbott, D. C. Abud, A. Abed Abeling, K. Abhayasinghe, D. K. Abidi, S. H. AbouZeid, O. S. Abraham, N. L. Abramowicz, H. Abreu, H. Abulaiti, Y. Acharya, B. S. Achkar, B. Adachi, S. Adam, L. Bourdarios, C. Adam Adamczyk, L. Adamek, L. Adelman, J. Adersberger, m. Adiguzel, A. Adorni, S. Adye, T. Affolder, A. A. Afik, Y. Agapopoulou, C. Agaras, m. N. Aggarwal, A. Agheorghiesei, C. Aguilar-Saavedra, J. A. Ahmadov, F. Ahmed, W. S. Ai, X. Aielli, G. Akatsuka, S. Åkesson, T. P. A. Akilli, E. Akimov, A. V. Khoury, K. Al Alberghi, G. L. Albert, J. Verzini, m. J. Alconada Alderweireldt, S. Aleksa, m. Aleksandrov, I. N. Alexa, C. Alexandre, D. Alexopoulos, T. Alfonsi, A. Alfonsi, F. Alhroob, m. Ali, B. Alimonti, G. Alison, J. Alkire, S. P. Allaire, C. Allbrooke, B. m. m. Allen, B. W. Allport, P. P. Aloisio, A. Alonso, A. Alonso, F. Alpigiani, C. Alshehri, A. A. Estevez, m. Alvarez Piqueras, D. Álvarez Alviggi, m. G. Coutinho, Y. Amaral Ambler, A. Ambroz, L. Amelung, C. Amidei, D. Santos, S. P. Amor Dos Amoroso, S. Amrouche, C. S. An, F. Anastopoulos, C. Andari, N. Andeen, T. Anders, C. F. Anders, J. K. Andreazza, A. Andrei, V. Anelli, C. R. Angelidakis, S. Angerami, A. Anisenkov, A. V. Annovi, A. Antel, C. Anthony, m. T. Antonelli, m. Antrim, D. J. A. Anulli, F. Aoki, m. Pozo, J. A. Aparisi Bella, L. Aperio Arabidze, G. Araque, J. P. Ferraz, V. Araujo Pereira, R. Araujo Arcangeletti, C. Arce, A. T. H. Arduh, F. A. Arguin, J.-F. Argyropoulos, S. Arling, J.-H. Armbruster, A. J. Armstrong, A. Arnaez, O. Arnold, H. Tame, Z. P. Arrubarrena Artamonov, A. Artoni, G. Artz, S. Asai, S. Asbah, N. Asimakopoulou, E. m. Asquith, L. Assahsah, J. Assamagan, K. Astalos, R. Atkin, R. J. Atkinson, m. Atlay, N. B. Atmani, H. Augsten, K. Avolio, G. Avramidou, R. Ayoub, m. K. Azoulay, A. m. Azuelos, G. Bachacou, H. Bachas, K. Backes, m. Backman, F. Bagnaia, P. Bahmani, m. Bahrasemani, H. Bailey, A. J. Bailey, V. R. Baines, J. T. Bajic, m. Bakalis, C. Baker, O. K. Bakker, P. J. Gupta, D. Bakshi Balaji, S. Baldin, E. m. Balek, P. CPPM Aix-Marseille Université CNRS/IN2P3 Marseille France Homer L. Dodge Department of Physics and Astronomy University of Oklahoma Norman USA Department of Physics University of Massachusetts Amherst USA INFN Sezione di Pavia Pavia Italy Dipartimento di Fisica Università di Pavia Pavia Italy II. Physikalisches Institut Georg-August-Universität Göttingen Göttingen Germany Department of Physics Royal Holloway University of London Egham UK Department of Physics University of Toronto Toronto Canada Niels Bohr Institute University of Copenhagen Copenhagen Denmark Department of Physics and Astronomy University of Sussex Brighton UK Raymond and Beverly Sackler School of Physics and Astronomy Tel Aviv University Tel Aviv Israel Department of Physics Technion Israel Institute of Technology Haifa Israel High Energy Physics Division Argonne National Laboratory Argonne USA INFN Gruppo Collegato di Udine Sezione di Trieste Udine Italy ICTP Trieste Italy Department of Physics King’s College London London UK International Center for Elementary Particle Physics and Department of Physics University of Tokyo Tokyo Japan Institut für Physik Universität Mainz Mainz Germany LAPP Université Grenoble Alpes Université Savoie Mont Blanc CNRS/IN2P3 Annecy France AGH University of Science and Technology Faculty of Physics and Applied Computer Science Kraków Poland Department of Physics Northern Illinois University DeKalb USA Fakultät für Physik Ludwig-Maximilians-Universität München Munich Germany Department of Physics Bogazici University Istanbul Turkey Département de Physique Nucléaire et Corpusculaire Université de Genève Geneva Switzerland Particle Physics Department Rutherford Appleton Laboratory Didcot UK Santa Cruz Institute for Particle Physics University of California Santa Cruz Santa Cruz USA LAL Université Paris-Sud CNRS/IN2P3 Université Paris-Saclay Orsay France LPC Université Clermont Auvergne CNRS/IN2P3 Clermont-Ferrand France Institute

Corrections for five figures and six tables are noted for the paper, which do not affect the conclusions reported.

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Search for a Narrow Resonance Lighter than 200 GeV Decaying to a Pair of muons in Proton-Proton Collisions at s=13 TeV

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Physical Review Letters 2020年第13期124卷 131802-131802页

作者： A. m. Sirunyan A. Tumasyan W. Adam F. Ambrogi T. Bergauer m. Dragicevic J. Erö A. Escalante Del Valle m. Flechl R. Frühwirth m. Jeitler N. Krammer I. Krätschmer D. Liko T. madlener I. mikulec N. Rad J. Schieck R. Schöfbeck m. Spanring D. Spitzbart W. Waltenberger C.-E. Wulz m. Zarucki V. Drugakov V. mossolov J. Suarez Gonzalez m. R. Darwish E. A. De Wolf D. Di Croce X. Janssen A. Lelek m. Pieters H. Rejeb Sfar H. Van Haevermaet P. Van mechelen S. Van Putte N. Van Remortel F. Blekman E. S. Bols S. S. Chhibra J. D’Hondt J. De Clercq D. Lontkovskyi S. Lowette I. marchesini S. moortgat Q. Python K. Skovpen S. Tavernier W. Van Doninck P. Van mulders D. Beghin B. Bilin B. Clerbaux G. De Lentdecker H. Delannoy B. Dorney L. Favart A. Grebenyuk A. K. Kalsi A. Popov N. Postiau E. Starling L. Thomas C. Vander Velde P. Vanlaer D. Vannerom T. Cornelis D. Dobur I. Khvastunov m. Niedziela C. Roskas m. Tytgat W. Verbeke B. Vermassen m. Vit O. Bondu G. Bruno C. Caputo P. David C. Delaere m. Delcourt A. Giammanco V. Lemaitre J. Prisciandaro A. Saggio m. Vidal marono P. Vischia J. Zobec F. L. Alves G. A. Alves G. Correia Silva C. Hensel A. moraes P. Rebello Teles E. Belchior Batista Das Chagas W. Carvalho J. Chinellato E. Coelho E. m. Da Costa G. G. Da Silveira D. De Jesus Damiao C. De Oliveira martins S. Fonseca De Souza L. m. Huertas Guativa H. malbouisson J. martins D. matos Figueiredo m. medina Jaime m. melo De Almeida C. mora Herrera L. mundim H. Nogima W. L. Prado Da Silva L. J. Sanchez Rosas A. Santoro A. Sznajder m. Thiel E. J. Tonelli manganote F. Torres Da Silva De Araujo A. Vilela Pereira C. A. Bernardes L. Calligaris T. R. Fernandez Perez Tomei E. m. Gregores D. S. Lemos P. G. mercadante S. F. Novaes Sandra S. Padula A. Aleksandrov G. Antchev R. Hadjiiska P. Iaydjiev m. misheva m. Rodozov m. Shopova G. Sultanov m. Bonchev A. Dimitrov T. Ivanov L. Litov B. Pavlov P. Petkov W. Fang X. Gao L. Yuan m. Ahmad Z. Hu Y. Wang G. m. Chen H. S. Chen m. Chen C. H. Jiang D. Leggat H. Liao Z. Liu A. Spiezia J. Tao E. Yazgan H. Zhang Yerevan Physics Institute Yerevan Armenia Institut für Hochenergiephysik Wien Austria Institute for Nuclear Problems Minsk Belarus 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 São Paulo Brazil 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 National Centre for Physics Quaid-I-Azam University Islamabad Pakistan Department of Physics Tsinghua University Beijing China University of Virginia Charlottesville Virginia USA Institute of High Energy Physics Beijing China State Key Laboratory of Nuclear Physics and Technology Peking University Beijing China The University of Kansas Lawrence Kansas USA Zhejiang University 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 National Institute of Chemical Physics and Biophysics Tallinn Estonia Department of Physics University of Helsinki Helsinki Finland Helsinki Institute of Physics Helsinki Finland Lappeenranta University of Technology Lappeenranta Finland IRFU CEA Un

A search is presented for a narrow resonance decaying to a pair of oppositely charged muons using s=13 TeV proton-proton collision data recorded at the LHC. In the 45–75 and 110–200 GeV resonance mass ranges, the search is based on conventional triggering and event reconstruction techniques. In the 11.5–45 GeV mass range, the search uses data collected with dimuon triggers with low transverse momentum thresholds, recorded at high rate by storing a reduced amount of trigger-level information. The data correspond to integrated luminosities of 137 and 96.6 fb−1 for conventional and high-rate triggering, respectively. No significant resonant peaks are observed in the probed mass ranges. The search sets the most stringent constraints to date on a dark photon in the ∼30–75 and 110–200 GeV mass ranges.

关键词： Hypothetical gauge bosons muons Hadron colliders

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Constraints on the χc1 versus χc2 Polarizations in Proton-Proton Collisions at s=8 TeV

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Physical Review Letters 2020年第16期124卷 162002-162002页

作者： A. m. Sirunyan A. Tumasyan W. Adam F. Ambrogi T. Bergauer m. Dragicevic J. Erö A. Escalante Del Valle m. Flechl R. Frühwirth m. Jeitler N. Krammer I. Krätschmer D. Liko T. madlener I. mikulec N. Rad J. Schieck R. Schöfbeck m. Spanring W. Waltenberger C.-E. Wulz m. Zarucki V. Drugakov V. mossolov J. Suarez Gonzalez m. R. Darwish E. A. De Wolf D. Di Croce X. Janssen T. Kello A. Lelek m. Pieters H. Rejeb Sfar H. Van Haevermaet P. Van mechelen S. Van Putte N. Van Remortel F. Blekman E. S. Bols S. S. Chhibra J. D’Hondt J. De Clercq D. Lontkovskyi S. Lowette I. marchesini S. moortgat Q. Python S. Tavernier W. Van Doninck P. Van mulders D. Beghin B. Bilin B. Clerbaux G. De Lentdecker H. Delannoy B. Dorney L. Favart A. Grebenyuk A. K. Kalsi L. moureaux A. Popov N. Postiau E. Starling L. Thomas C. Vander Velde P. Vanlaer D. Vannerom T. Cornelis D. Dobur I. Khvastunov m. Niedziela C. Roskas K. Skovpen m. Tytgat W. Verbeke B. Vermassen m. Vit G. Bruno C. Caputo P. David C. Delaere m. Delcourt A. Giammanco V. Lemaitre J. Prisciandaro A. Saggio P. Vischia J. Zobec G. A. Alves G. Correia Silva C. Hensel A. moraes E. Belchior Batista Das Chagas W. Carvalho J. Chinellato E. Coelho E. m. Da Costa G. G. Da Silveira D. De Jesus Damiao C. De Oliveira martins S. Fonseca De Souza H. malbouisson J. martins D. matos Figueiredo m. medina Jaime m. melo De Almeida C. mora Herrera L. mundim H. Nogima W. L. Prado Da Silva P. Rebello Teles L. J. Sanchez Rosas A. Santoro A. Sznajder m. Thiel E. J. Tonelli manganote F. Torres Da Silva De Araujo A. Vilela Pereira C. A. Bernardes L. Calligaris T. R. Fernandez Perez Tomei E. m. Gregores D. S. Lemos P. G. mercadante S. F. Novaes Sandra S. Padula A. Aleksandrov G. Antchev R. Hadjiiska P. Iaydjiev m. misheva m. Rodozov m. Shopova G. Sultanov m. Bonchev A. Dimitrov T. Ivanov L. Litov B. Pavlov P. Petkov A. Petrov W. Fang X. Gao L. Yuan m. Ahmad Z. Hu Y. Wang G. m. Chen H. S. Chen m. Chen C. H. Jiang D. Leggat H. Liao Z. Liu A. Spiezia J. Tao E. Yazgan H. Zhang S. Zhang J. Zhao A. Agapitos Y. Ban G. Ch Yerevan Physics Institute Yerevan Armenia Institut für Hochenergiephysik Wien Austria Institute for Nuclear Problems Minsk Belarus 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 São Paulo Brazil 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 National Centre for Physics Quaid-I-Azam University Islamabad Pakistan Department of Physics Tsinghua University Beijing China University of Virginia Charlottesville Virginia USA Institute of High Energy Physics Beijing China State Key Laboratory of Nuclear Physics and Technology Peking University Beijing China The University of Kansas Lawrence Kansas USA Zhejiang University 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 National Institute of Chemical Physics and Biophysics Tallinn Estonia Department of Physics University of Helsinki Helsinki Finland Helsinki Institute of Physics Helsinki Finland Lappeenranta University of Technology Lappeenranta Finland IRFU CEA Un

The polarizations of promptly produced χc1 and χc2 mesons are studied using data collected by the CmS experiment at the LHC, in proton-proton collisions at s=8 TeV. The χc states are reconstructed via their radiative decays χc→J/ψγ, with the photons being measured through conversions to e+e−, which allows the two states to be well resolved. The polarizations are measured in the helicity frame, through the analysis of the χc2 to χc1 yield ratio as a function of the polar or azimuthal angle of the positive muon emitted in the J/ψ→μ+μ− decay, in three bins of J/ψ transverse momentum. While no differences are seen between the two states in terms of azimuthal decay angle distributions, they are observed to have significantly different polar anisotropies. The measurement favors a scenario where at least one of the two states is strongly polarized along the helicity quantization axis, in agreement with nonrelativistic quantum chromodynamics predictions. This is the first measurement of significantly polarized quarkonia produced at high transverse momentum.

关键词： Charm quark Polarization Hadron colliders

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Search for Supersymmetry with a Compressed mass Spectrum in Events with a Soft τ Lepton, a Highly Energetic Jet, and Large missing Transverse momentum in Proton-Proton Collisions at s=13 TeV

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Physical Review Letters 2020年第4期124卷 041803-041803页

作者： A. m. Sirunyan A. Tumasyan W. Adam F. Ambrogi T. Bergauer J. Brandstetter m. Dragicevic J. Erö A. Escalante Del Valle m. Flechl R. Frühwirth m. Jeitler N. Krammer I. Krätschmer D. Liko T. madlener I. mikulec N. Rad J. Schieck R. Schöfbeck m. Spanring D. Spitzbart W. Waltenberger C.-E. Wulz m. Zarucki V. Drugakov V. mossolov J. Suarez Gonzalez m. R. Darwish E. A. De Wolf D. Di Croce X. Janssen A. Lelek m. Pieters H. Rejeb Sfar H. Van Haevermaet P. Van mechelen S. Van Putte N. Van Remortel F. Blekman E. S. Bols S. S. Chhibra J. D’Hondt J. De Clercq D. Lontkovskyi S. Lowette I. marchesini S. moortgat Q. Python K. Skovpen S. Tavernier W. Van Doninck P. Van mulders D. Beghin B. Bilin H. Brun B. Clerbaux G. De Lentdecker H. Delannoy B. Dorney L. Favart A. Grebenyuk A. K. Kalsi A. Popov N. Postiau E. Starling L. Thomas C. Vander Velde P. Vanlaer D. Vannerom T. Cornelis D. Dobur I. Khvastunov m. Niedziela C. Roskas m. Tytgat W. Verbeke B. Vermassen m. Vit O. Bondu G. Bruno C. Caputo P. David C. Delaere m. Delcourt A. Giammanco V. Lemaitre J. Prisciandaro A. Saggio m. Vidal marono P. Vischia J. Zobec F. L. Alves G. A. Alves G. Correia Silva C. Hensel A. moraes P. Rebello Teles E. Belchior Batista Das Chagas W. Carvalho J. Chinellato E. Coelho E. m. Da Costa G. G. Da Silveira D. De Jesus Damiao C. De Oliveira martins S. Fonseca De Souza L. m. Huertas Guativa H. malbouisson J. martins D. matos Figueiredo m. medina Jaime m. melo De Almeida C. mora Herrera L. mundim H. Nogima W. L. Prado Da Silva L. J. Sanchez Rosas A. Santoro A. Sznajder m. Thiel E. J. Tonelli manganote F. Torres Da Silva De Araujo A. Vilela Pereira C. A. Bernardes L. Calligaris T. R. Fernandez Perez Tomei E. m. Gregores D. S. Lemos P. G. mercadante S. F. Novaes Sandra S. Padula A. Aleksandrov G. Antchev R. Hadjiiska P. Iaydjiev m. misheva m. Rodozov m. Shopova G. Sultanov m. Bonchev A. Dimitrov T. Ivanov L. Litov B. Pavlov P. Petkov W. Fang X. Gao L. Yuan G. m. Chen H. S. Chen m. Chen C. H. Jiang D. Leggat H. Liao Z. Liu A. Spiezia J. Tao E. Yazgan H. Zhang Yerevan Physics Institute Yerevan Armenia Institut für Hochenergiephysik Wien Austria Institute for Nuclear Problems Minsk Belarus 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 São Paulo Brazil 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 Institute of High Energy Physics Beijing China State Key Laboratory of Nuclear Physics and Technology Peking University Beijing China The University of Kansas Lawrence Kansas USA National Centre for Physics Quaid-I-Azam University Islamabad Pakistan Tsinghua University Beijing China University of Virginia Charlottesville Virginia USA Zhejiang University 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 National Institute of Chemical Physics and Biophysics Tallinn Estonia Department of Physics University of Helsinki Helsinki Finland Helsinki Institute of Physics Helsinki Finland Lappeenranta University of Technology Lappeenranta Finland IRFU CEA Université Paris-Saclay

The first search for supersymmetry in events with an experimental signature of one soft, hadronically decaying τ lepton, one energetic jet from initial-state radiation, and large transverse momentum imbalance is presented. These event signatures are consistent with direct or indirect production of scalar τ leptons (τ˜) in supersymmetric models that exhibit coannihilation between the τ˜ and the lightest neutralino (χ˜10), and that could generate the observed relic density of dark matter. The data correspond to an integrated luminosity of 77.2 fb−1 of proton-proton collisions at s=13 TeV collected with the CmS detector at the LHC in 2016 and 2017. The results are interpreted in a supersymmetric scenario with a small mass difference (Δm) between the chargino (χ˜1±) or next-to-lightest neutralino (χ˜20), and the χ˜10. The mass of the τ˜ is assumed to be the average of the χ˜1± and χ˜10 masses. The data are consistent with standard model background predictions. Upper limits at 95% confidence level are set on the sum of the χ˜1±, χ˜20, and τ˜ production cross sections for Δm(χ˜1±,χ˜10)=50 GeV, resulting in a lower limit of 290 GeV on the mass of the χ˜1±, which is the most stringent to date and surpasses the bounds from the LEP experiments.

关键词： Supersymmetric models Superpartners Tau leptons Hadron colliders

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Publisher Correction: Observation of triple J/ψ meson production in proton-proton collisions

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Nature Physics 2023年 461页

作者： A. Tumasyan W. Adam J. W. Andrejkovic T. Bergauer S. Chatterjee K. Damanakis m. Dragicevic A. Escalante Del Valle R. Frühwirth m. Jeitler N. Krammer L. Lechner D. Liko I. mikulec P. Paulitsch F. m. Pitters J. Schieck R. Schöfbeck D. Schwarz S. Templ W. Waltenberger C.-E. Wulz V. Chekhovsky A. Litomin V. makarenko m. R. Darwish E. A. De Wolf T. Janssen T. Kello A. Lelek H. Rejeb Sfar P. Van mechelen S. Van Putte N. Van Remortel F. Blekman E. S. Bols J. D’Hondt m. Delcourt H. El Faham S. Lowette S. moortgat A. morton D. müller A. R. Sahasransu S. Tavernier W. Van Doninck D. Beghin B. Bilin B. Clerbaux G. De Lentdecker L. Favart A. K. Kalsi K. Lee m. mahdavikhorrami I. makarenko L. moureaux L. Pétré A. Popov N. Postiau E. Starling L. Thomas m. Vanden Bemden C. Vander Velde P. Vanlaer T. Cornelis D. Dobur J. Knolle L. Lambrecht G. mestdach m. Niedziela C. Rendón C. Roskas A. Samalan K. Skovpen m. Tytgat B. Vermassen L. Wezenbeek A. Benecke A. Bethani G. Bruno F. Bury C. Caputo P. David C. Delaere I. S. Donertas A. Giammanco K. Jaffel Sa. Jain V. Lemaitre K. mondal J. Prisciandaro A. Taliercio m. Teklishyn T. T. Tran P. Vischia S. Wertz G. A. Alves C. Hensel A. moraes P. Rebello Teles 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 V. Dos Santos Sousa S. Fonseca De Souza C. mora Herrera K. mota Amarilo L. mundim H. Nogima A. Santoro S. m. Silva Do Amaral A. Sznajder m. Thiel F. Torres Da Silva De Araujo A. Vilela Pereira C. A. Bernardes L. Calligaris T. R. Fernandez Perez Tomei E. m. Gregores D. S. Lemos P. G. mercadante S. F. Novaes Sandra S. Padula A. Aleksandrov G. Antchev R. Hadjiiska P. Iaydjiev m. misheva m. Rodozov m. Shopova G. Sultanov A. Dimitrov T. Ivanov L. Litov B. Pavlov P. Petkov A. Petrov T. Cheng T. Javaid m. mittal L. Yuan m. Ahmad G. Bauer C. Dozen Z. Hu J. martins Y. Wang K. Yi E. Chapon G. m. Chen H. S. Chen m. Chen F. Iemmi A. Kapoor D. Leggat H. Liao Z.-A. Liu V. milosevic F. m Yerevan Physics Institute Yerevan Armenia Institut für Hochenergiephysik Vienna Austria Institute for Nuclear Problems Minsk Belarus 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 São Paulo Brazil 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 University of Florida Gainesville Florida USA Massachusetts Institute of Technology Cambridge Massachusetts USA 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 University of California Riverside Riverside California USA Rice University Houston Texas USA Zhejiang University Hangzhou China Zhejiang 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

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A review and research towards mobile cloud computing

A review and research towards mobile cloud computing

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2nd IEEE International Conference on mobile Cloud Computing, Services, and engineering, mobileCloud 2014

作者： Dev, Dipayan Baishnab, Krishna Lal M.Tech Computer Science and Engineering National Institute of Technology Silchar India

ISBN: (纸本)9781479925049

With an explosive growth of the mobile applications and emerging of cloud computing concept, the mobile Cloud Computing (mCC) has become a potential technology for the mobile service users. mCC integrates the technology of cloud computing with mobile environment and has taken part of major discussion thread in the IT world since 2009. The ABI Research predicts that the number of mobile cloud computing subscribers is expected to grow from 42.8 million (1.1% of total mobile users) in 2008 to 998 million (19% of total mobile users) in 2014. Despite of this hype achieved by mobile cloud computing, the growth of mobile cloud computing subscribers is still below expectations. According to the recent survey conducted by the International Data Corporation, most IT Executives and CEOs are not interested in adopting such services due to the drawbacks associated with this (e.g., battery life, storage, and bandwidth), environment (e.g., heterogeneity, scalability, and availability), and security (e.g., reliability and privacy). In spite of various efforts to overcome these, there are a number of loopholes and challenges that still exist in the security policies of mobile cloud computing. This paper will give a review of various challenges in this field and measures to overcome such. © 2014 IEEE.

关键词： mobile cloud computing

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measurements of tt¯H Production and the CP Structure of the Yukawa Interaction between the Higgs Boson and Top Quark in the Diphoton Decay Channel

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Physical Review Letters 2020年第6期125卷 061801-061801页

作者： A. m. Sirunyan A. Tumasyan W. Adam F. Ambrogi T. Bergauer m. Dragicevic J. Erö A. Escalante Del Valle m. Flechl R. Frühwirth m. Jeitler N. Krammer I. Krätschmer D. Liko T. madlener I. mikulec N. Rad J. Schieck R. Schöfbeck m. Spanring W. Waltenberger C.-E. Wulz m. Zarucki V. Drugakov V. mossolov J. Suarez Gonzalez m. R. Darwish E. A. De Wolf D. Di Croce X. Janssen T. Kello A. Lelek m. Pieters H. Rejeb Sfar H. Van Haevermaet P. Van mechelen S. Van Putte N. Van Remortel F. Blekman E. S. Bols S. S. Chhibra J. D’Hondt J. De Clercq D. Lontkovskyi S. Lowette I. marchesini S. moortgat Q. Python S. Tavernier W. Van Doninck P. Van mulders D. Beghin B. Bilin B. Clerbaux G. De Lentdecker H. Delannoy B. Dorney L. Favart A. K. Kalsi L. moureaux A. Popov N. Postiau E. Starling L. Thomas C. Vander Velde P. Vanlaer D. Vannerom T. Cornelis D. Dobur I. Khvastunov m. Niedziela C. Roskas K. Skovpen m. Tytgat W. Verbeke B. Vermassen m. Vit G. Bruno C. Caputo P. David C. Delaere m. Delcourt A. Giammanco V. Lemaitre J. Prisciandaro A. Saggio P. Vischia J. Zobec G. A. Alves G. Correia Silva C. Hensel A. moraes E. Belchior Batista Das Chagas W. Carvalho J. Chinellato E. Coelho E. m. Da Costa G. G. Da Silveira D. De Jesus Damiao C. De Oliveira martins S. Fonseca De Souza H. malbouisson J. martins D. matos Figueiredo m. medina Jaime m. melo De Almeida C. mora Herrera L. mundim H. Nogima W. L. Prado Da Silva P. Rebello Teles L. J. Sanchez Rosas A. Santoro A. Sznajder m. Thiel E. J. Tonelli manganote F. Torres Da Silva De Araujo A. Vilela Pereira C. A. Bernardes L. Calligaris T. R. Fernandez Perez Tomei E. m. Gregores D. S. Lemos P. G. mercadante S. F. Novaes Sandra S. Padula A. Aleksandrov G. Antchev R. Hadjiiska P. Iaydjiev m. misheva m. Rodozov m. Shopova G. Sultanov m. Bonchev A. Dimitrov T. Ivanov L. Litov B. Pavlov P. Petkov A. Petrov W. Fang X. Gao L. Yuan m. Ahmad Z. Hu Y. Wang G. m. Chen H. S. Chen m. Chen C. H. Jiang D. Leggat H. Liao Z. Liu A. Spiezia J. Tao E. Yazgan H. Zhang S. Zhang J. Zhao A. Agapitos Y. Ban G. Chen A. Levin J Yerevan Physics Institute Yerevan Armenia Institut für Hochenergiephysik Wien Austria Institute for Nuclear Problems Minsk Belarus 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 São Paulo Brazil 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 National Centre for Physics Quaid-I-Azam University Islamabad Pakistan Department of Physics Tsinghua University Beijing China University of Virginia Charlottesville Virginia USA Institute of High Energy Physics Beijing China State Key Laboratory of Nuclear Physics and Technology Peking University Beijing China The University of Kansas Lawrence Kansas USA Zhejiang University 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 National Institute of Chemical Physics and Biophysics Tallinn Estonia Department of Physics University of Helsinki Helsinki Finland Helsinki Institute of Physics Helsinki Finland Lappeenranta University of Technology Lappeenranta Finland IRFU CEA Un

The first observation of the tt¯H process in a single Higgs boson decay channel with the full reconstruction of the final state (H→γγ) is presented, with a significance of 6.6 standard deviations (σ). The CP structure of Higgs boson couplings to fermions is measured, resulting in an exclusion of the pure CP-odd structure of the top Yukawa coupling at 3.2σ. The measurements are based on a sample of proton-proton collisions at a center-of-mass energy s=13 TeV collected by the CmS detector at the LHC, corresponding to an integrated luminosity of 137 fb−1. The cross section times branching fraction of the tt¯H process is measured to be σtt¯HBγγ=1.56−0.32+0.34 fb, which is compatible with the standard model prediction of 1.13−0.11+0.08 fb. The fractional contribution of the CP-odd component is measured to be fCPHtt=0.00±0.33.

关键词： Particle production Higgs bosons Photons Top quark

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Observation of the Bs0→X(3872)ϕ Decay

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Physical Review Letters 2020年第15期125卷 152001-152001页

作者： A. m. Sirunyan A. Tumasyan W. Adam F. Ambrogi T. Bergauer m. Dragicevic J. Erö A. Escalante Del Valle R. Frühwirth m. Jeitler N. Krammer L. Lechner D. Liko T. madlener I. mikulec F. m. Pitters N. Rad J. Schieck R. Schöfbeck m. Spanring S. Templ W. Waltenberger C.-E. Wulz m. Zarucki V. Chekhovsky A. Litomin V. makarenko J. Suarez Gonzalez m. R. Darwish E. A. De Wolf D. Di Croce X. Janssen T. Kello A. Lelek m. Pieters H. Rejeb Sfar H. Van Haevermaet P. Van mechelen S. Van Putte N. Van Remortel F. Blekman E. S. Bols S. S. Chhibra J. D’Hondt J. De Clercq D. Lontkovskyi S. Lowette I. marchesini S. moortgat A. morton Q. Python S. Tavernier W. Van Doninck P. Van mulders D. Beghin B. Bilin B. Clerbaux G. De Lentdecker H. Delannoy B. Dorney L. Favart A. Grebenyuk A. K. Kalsi I. makarenko L. moureaux L. Pétré A. Popov N. Postiau E. Starling L. Thomas C. Vander Velde P. Vanlaer D. Vannerom L. Wezenbeek T. Cornelis D. Dobur m. Gruchala I. Khvastunov m. Niedziela C. Roskas K. Skovpen m. Tytgat W. Verbeke B. Vermassen m. Vit G. Bruno F. Bury C. Caputo P. David C. Delaere m. Delcourt I. S. Donertas A. Giammanco V. Lemaitre K. mondal J. Prisciandaro A. Taliercio m. Teklishyn P. Vischia S. Wuyckens J. Zobec G. A. Alves G. Correia Silva C. Hensel A. moraes W. L. Aldá Júnior E. Belchior Batista Das Chagas H. Brandao malbouisson W. Carvalho J. Chinellato E. Coelho E. m. Da Costa G. G. Da Silveira D. De Jesus Damiao S. Fonseca De Souza J. martins D. matos Figueiredo m. medina Jaime m. melo De Almeida C. mora Herrera L. mundim H. Nogima P. Rebello Teles L. J. Sanchez Rosas A. Santoro S. m. Silva Do Amaral A. Sznajder m. Thiel E. J. Tonelli manganote F. Torres Da Silva De Araujo A. Vilela Pereira C. A. Bernardes L. Calligaris T. R. Fernandez Perez Tomei E. m. Gregores D. S. Lemos P. G. mercadante S. F. Novaes Sandra S. Padula A. Aleksandrov G. Antchev I. Atanasov R. Hadjiiska P. Iaydjiev m. misheva m. Rodozov m. Shopova G. Sultanov m. Bonchev A. Dimitrov T. Ivanov L. Litov B. Pavlov P. Petkov A. Petrov W. Fang Q. Guo H. Wang L. Yuan m. Yerevan Physics Institute Yerevan Armenia Institut für Hochenergiephysik Wien Austria Institute for Nuclear Problems Minsk Belarus 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 São Paulo Brazil 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 Rutgers The State University of New Jersey Piscataway New Jersey USA Department of Physics Tsinghua University Beijing China University of Virginia Charlottesville Virginia USA Institute of High Energy Physics Beijing China Massachusetts Institute of Technology Cambridge Massachusetts USA State Key Laboratory of Nuclear Physics and Technology Peking University Beijing China The University of Kansas Lawrence Kansas USA 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 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 Ener

Using a data sample of proton-proton collisions at s=13 TeV, corresponding to an integrated luminosity of 140 fb−1 collected by the CmS experiment in 2016–2018, the Bs0→X(3872)ϕ decay is observed. Decays into J/ψπ+π− and K+K− are used to reconstruct, respectively, the X(3872) and ϕ. The ratio of the product of branching fractions B[Bs0→X(3872)ϕ]B[X(3872)→J/ψπ+π−] to the product B[Bs0→ψ(2S)ϕ]B[ψ(2S)→J/ψπ+π−] is measured to be [2.21±0.29(stat)±0.17(syst)]%. The ratio B[Bs0→X(3872)ϕ]/B[B0→X(3872)K0] is found to be consistent with one, while the ratio B[Bs0→X(3872)ϕ]/B[B+→X(3872)K+] is two times smaller. This suggests a difference in the production dynamics of the X(3872) in B0 and Bs0 meson decays compared to B+. The reported observation may shed new light on the nature of the X(3872) particle.

关键词： Branching fraction Bottom quark Strange quark Hadron colliders

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