Search for low-mass resonances decaying into bottom quark-antiquark pairs in proton-proton collisions at s√= 13 TeV

作     者：Sirunyany, A.M. Tumasyan, A. Adam, W. Ambrogi, F. Bergauer, T. Dragicevic, M. Erö, J. Del Valle, A. Escalante Flechl, M. Uhwirth, R.F. Jeitler, M. Krammer, N. Krätschmer, I. Liko, D. Madlener, T. Mikulec, I. Rad, N. Schieck, J. Schöfbeck, R. Spanring, M. Waltenberger, W. Wulz, C.-E. Zarucki, M. Drugakov, V. Mossolov, V. Gonzalez, J. Suarez Darwish, M.R. De Wolf, E.A. Di Croce, D. Janssen, X. Kello, T. Lelek, A. Pieters, M. Sfar, H. Rejeb Van Haevermaet, H.V. Van Mechelen, P. Van Putte, S. Van Remortel, N. Abu Zeid, S.A. Blekman, F. Bols, E.S. Chhibra, S.S. D'Hondt, J. De Clercq, J. Lontkovskyi, D. Lowette, S. Marchesini, I. Moortgat, S. Python, Q. Tavernier, S. Van Doninck, W. Van Mulders, P. Van Parijs, I. Beghin, D. Bilin, B. Clerbaux, B. Lentdecker, G. De Delannoy, H. Dorney, B. Favart, L. Kalsi, A.K. Moureaux, L. Popov, A. Postiau, N. Starling, E. Thomas, L. Velde, C. Vander Vanlaer, P. Vannerom, D. Wang, Q. Cornelis, T. Dobur, D. Khvastunov, I. Niedziela, M. Roskas, C. Skovpen, K. Tytgat, M. Verbeke, W. Vermassen, B. Vit, M. Bruno, G. Caputo, C. David, P. Delaere, C. Delcourt, M. Giammanco, A. Lemaitre, V. Prisciandaro, J. Saggio, A. Vischia, P. Zobec, J. Alves, G.A. Silva, G. Correia Hensel, C. Moraes, A. Chagas, E. Belchior Batista Das Carvalho, W. Chinellato, J. Coelho, E. Da Costa, E.M.D. Silveira, G.G. Da Damiao, D. De Jesus Martins, C. De Oliveira De Souza, S. Fonseca Malbouisson, H. Martins, J. Figueiredo, D. Matos Jaime, M. Medina De Almeida, M. Melo Herrera, C. Mora Mundim, L. Nogima, H. Da Silva, W.L. Prado Teles, P. Rebello Rosas, L.J. Sanchez Santoro, A. Sznajder, A. Thiel, M. Manganote, E.J. Tonelli Da Silva De Araujo, F. Torres Pereira, A. Vilela Ahuja, S. Bernardesa, C.A. Calligarisa, L. Tomeia, T.R. Fernandez Perez Gregoresb, E.M. Lemos, D.S. Mercadanteb, P.G. Novaesa, 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. Fang, W. Gao, X. Yuan, L. Ahmad, M. 

作者机构：Yerevan Physics Institute Yerevan Armenia Institut F Ur Hochenergiephysik Wien Austria Institute for Nuclear Problems Minsk Belarus Universiteit Antwerpen Antwerpen Belgium Vrije Universiteit Brussel Brussel Belgium Universite Libre de Bruxelles Bruxelles Belgium Ghent University Ghent Belgium Universite 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 SaËœo Paulo Brazil Universidade Federal Do Abc SaËœo Paulo Brazil Institute for Nuclear Research and Nuclear Energy Bulgarian Academy of Sciences Sofia Bulgaria University of Sofia Sofia Bulgaria Beihang University Beijing China Kyungpook National University Daegu Daegu Korea Republic of Institute of High Energy Physics Beijing China State Key Laboratory of Nuclear Physics and Technology Peking University Beijing China Zhejiang University Hangzhou China Universidad de Los Andes Bogota Colombia Faculty of Electrical Engineering Mechanical Engineering and Naval Architecture University of Split Split Croatia Faculty of Science University of Split Split Croatia Institute Rudjer Boskovic Zagreb Croatia University of Cyprus Nicosia Cyprus Tsinghua University Beijing China Charles University Prague Czech Republic Escuela Politecnica Nacional Quito Ecuador Universidad San Francisco de Quito Quito Ecuador Academy of Scientific Research and Technology of 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 Universite Paris-Saclay Gif-sur-Yvette France Laboratoire Leprince-Ringuet Institut Polytechnique de Paris CNRS/IN2P3 Ecole Polytechnique Universite de Strasbourg CNRS Iphc Umr 7178 Strasbourg France Centre de Calcul de l'Institut National de Physique Nucleaire et de Physique des Particules CNRS/IN2P3 Villeurbanne France Institut de Physique Nucleaíre de Lyon Universite de Lyon Universite Claude Bernard Lyon 1 CNRS-IN2P3 Villeurbanne France Georgian Technical University Tbilisi Georgia Tbilisi State University Tbilisi Georgia I. Physikalisches Institut Rwth Aachen University Aachen Germany III. Physikalisches Institut A Rwth Aachen University Aachen Germany III. Physikalisches Institut B Rwth Aachen University Aachen Germany Deutsches Elektronen-Synchrotron Hamburg Germany University of Hamburg Hamburg Germany Karlsruher Institut fuer Technologie Karlsruhe Germany  NCSR Demokritos Aghia Paraskevi Greece National and Kapodistrian University of Athens Athens Greece National Technical University of Athens Athens Greece University of Ioánnina IoAânnina Greece MTA-ELTE Lend Ulet Cms Particle and Nuclear Physics Group Eötvös Loránd University Budapest Hungary Wigner Research Centre for Physics Budapest Hungary Institute of Nuclear Research Atomki Debrecen Hungary Institute of Physics University of Debrecen Debrecen Hungary Texas A and M University at Qatar Doha Qatar  Bangalore India National Institute of Science Education and Research Hbni Bhubaneswar India Panjab University Chandigarh India University of Delhi Delhi India Saha Institute of Nuclear Physics HBNI Kolkata India Indian Institute of Technology Madras Madras India Bhabha Atomic Research Centre Mumbai India Tata Institute of Fundamental Research-A Mumbai India Tata Institute of Fundamental Research-B Mumbai India  Pune India Isfahan University of Technology  Tehran Iran University College Dublin Dublin Ireland Infn Sezione di Bari Bari Italy Università di Bari Bari Italy Politecnico di Bari Bari Italy Infn Sezione di Bologna Bologna Italy Università di Bologna Bologna Italy Infn Sezione di Catania Catania Italy Università di Catania Catania Italy Infn Sezione di Firenze Firenze Italy Università di Firenze Firenze Italy Infn Laboratori Nazionali di Frascati Frascati Italy Infn Sezione di Genova Genova Italy Università di Genova Genova Italy Infn Sezione di Milano-Bicocca Milano Italy Università di Milano-Bicocca Milano Italy Infn Sezione di Napoli Napoli Italy Università di Napoli 'Federico II' Napoli Italy Università della Basilicata Potenza Italy Università G. Marconi Roma Italy Infn Sezione di Padova Padova Italy Università di Padova Padova Italy Università di Trento Trento Italy Infn Sezione di Pavia Pavia Italy Università di Pavia Pavia Italy Infn Sezione di Perugia Perugia Italy Università di Perugia Perugia Italy Infn Sezione di Pisa Pisa Italy Università di Pisa Pisa Italy Scuola Normale Superiore di Pisa Pisa Italy Infn Sezione di Roma Rome Italy Sapienza Università di Roma Rome Italy Infn Sezione di Torino Torino Italy Università di Torino Torino Italy Università Del Piemonte Orientale Novara Italy 

出 版 物：《arXiv》 (arXiv)

年 卷 期：2018年

核心收录：

主　　题：Resonance 

摘      要：A search for narrow, low-mass, scalar and pseudoscalar resonances decaying to bottom quark-antiquark pairs is presented. The search is based on events recorded in s√= 13 TeV proton-proton collisions with the CMS detector at the LHC, collected in 2016, and corresponding to an integrated luminosity of 35.9 fb-1. The search selects events in which the resonance would be produced with high transverse momentum because of the presence of initial-or final-state radiation. In such events, the decay products of the resonance would be reconstructed as a single large-radius jet with high mass and two-prong substructure. A potential signal would be identified as a narrow excess in the jet invariant mass spectrum. No evidence for such a resonance is observed within the mass range from 50 to 350 GeV, and upper limits at 95% confidence level are set on the product of the cross section and branching fraction to a bottom quark-antiquark pair. These constitute the first constraints from the LHC on exotic bottom quark-antiquark resonances with masses below 325 GeV. Copyright © 2018, The Authors. All rights reserved.