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Search for a Light CP-odd Higgs Boson and Low-Mass Dark Matter at the Belle Experiment.
Seong, I S; Vahsen, S E; Adachi, I; Aihara, H; Al Said, S; Asner, D M; Aulchenko, V; Aushev, T; Ayad, R; Babu, V; Bakich, A M; Bansal, V; Behera, P; Bhardwaj, V; Bhuyan, B; Bilka, T; Biswal, J; Bobrov, A; Bonvicini, G; Bozek, A; Bracko, M; Browder, T E; Cao, L; Cervenkov, D; Chang, P; Chekelian, V; Chen, A; Cheon, B G; Chilikin, K; Cho, K; Choi, Y; Choudhury, S; Cinabro, D; Cunliffe, S; Dash, N; Di Carlo, S; Dingfelder, J; Dong, T V; Eidelman, S; Epifanov, D; Fast, J E; Frey, A; Fulsom, B G; Garg, R; Gaur, V; Gabyshev, N; Garmash, A; Gelb, M; Giri, A; Goldenzweig, P.
Afiliación
  • Seong IS; University of Hawaii, Honolulu, Hawaii 96822.
  • Vahsen SE; University of Hawaii, Honolulu, Hawaii 96822.
  • Adachi I; SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193.
  • Aihara H; High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801.
  • Al Said S; Department of Physics, University of Tokyo, Tokyo 113-0033.
  • Asner DM; Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah 21589.
  • Aulchenko V; Department of Physics, Faculty of Science, University of Tabuk, Tabuk 71451.
  • Aushev T; Brookhaven National Laboratory, Upton, New York 11973.
  • Ayad R; Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090.
  • Babu V; Novosibirsk State University, Novosibirsk 630090.
  • Bakich AM; Moscow Institute of Physics and Technology, Moscow Region 141700.
  • Bansal V; Department of Physics, Faculty of Science, University of Tabuk, Tabuk 71451.
  • Behera P; Tata Institute of Fundamental Research, Mumbai 400005.
  • Bhardwaj V; School of Physics, University of Sydney, New South Wales 2006.
  • Bhuyan B; Pacific Northwest National Laboratory, Richland, Washington 99352.
  • Bilka T; Indian Institute of Technology Madras, Chennai 600036.
  • Biswal J; Indian Institute of Science Education and Research Mohali, SAS Nagar, 140306.
  • Bobrov A; Indian Institute of Technology Guwahati, Assam 781039.
  • Bonvicini G; Faculty of Mathematics and Physics, Charles University, 121 16 Prague.
  • Bozek A; J. Stefan Institute, 1000 Ljubljana.
  • Bracko M; Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090.
  • Browder TE; Novosibirsk State University, Novosibirsk 630090.
  • Cao L; Wayne State University, Detroit, Michigan 48202.
  • Cervenkov D; H. Niewodniczanski Institute of Nuclear Physics, Krakow 31-342.
  • Chang P; J. Stefan Institute, 1000 Ljubljana.
  • Chekelian V; University of Maribor, 2000 Maribor.
  • Chen A; University of Hawaii, Honolulu, Hawaii 96822.
  • Cheon BG; Institut für Experimentelle Teilchenphysik, Karlsruher Institut für Technologie, 76131 Karlsruhe.
  • Chilikin K; Faculty of Mathematics and Physics, Charles University, 121 16 Prague.
  • Cho K; Department of Physics, National Taiwan University, Taipei 10617.
  • Choi Y; Max-Planck-Institut für Physik, 80805 München.
  • Choudhury S; National Central University, Chung-li 32054.
  • Cinabro D; Hanyang University, Seoul 133-791.
  • Cunliffe S; P.N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow 119991.
  • Dash N; Korea Institute of Science and Technology Information, Daejeon 305-806.
  • Di Carlo S; Sungkyunkwan University, Suwon 440-746.
  • Dingfelder J; Indian Institute of Technology Hyderabad, Telangana 502285.
  • Dong TV; Wayne State University, Detroit, Michigan 48202.
  • Eidelman S; Deutsches Elektronen-Synchrotron, 22607 Hamburg.
  • Epifanov D; Indian Institute of Technology Bhubaneswar, Satya Nagar 751007.
  • Fast JE; LAL, University Paris-Sud, CNRS/IN2P3, Université Paris-Saclay, Orsay.
  • Frey A; University of Bonn, 53115 Bonn.
  • Fulsom BG; SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193.
  • Garg R; High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801.
  • Gaur V; Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090.
  • Gabyshev N; P.N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow 119991.
  • Garmash A; Novosibirsk State University, Novosibirsk 630090.
  • Gelb M; Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090.
  • Giri A; Novosibirsk State University, Novosibirsk 630090.
  • Goldenzweig P; Pacific Northwest National Laboratory, Richland, Washington 99352.
Phys Rev Lett ; 122(1): 011801, 2019 Jan 11.
Article en En | MEDLINE | ID: mdl-31012694
ABSTRACT
We report on the first Belle search for a light CP-odd Higgs boson, A^{0}, that decays into low mass dark matter, χ, in final states with a single photon and missing energy. We search for events produced via the dipion transition ϒ(2S)→ϒ(1S)π^{+}π^{-}, followed by the on-shell process ϒ(1S)→γA^{0} with A^{0}→χχ, or by the off-shell process ϒ(1S)→γχχ. Utilizing a data sample of 157.3×10^{6} ϒ(2S) decays, we find no evidence for a signal. We set limits on the branching fractions of such processes in the mass ranges M_{A^{0}}<8.97 GeV/c^{2} and M_{χ}<4.44 GeV/c^{2}. We then use the limits on the off-shell process to set competitive limits on WIMP-nucleon scattering in the WIMP mass range below 5 GeV/c^{2}.
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Texto completo: 1 Banco de datos: MEDLINE Idioma: En Año: 2019 Tipo del documento: Article
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Texto completo: 1 Banco de datos: MEDLINE Idioma: En Año: 2019 Tipo del documento: Article