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Observation of Ξ(1620)
Sumihama, M; Adachi, I; Ahn, J K; Aihara, H; Al Said, S; Asner, D M; Atmacan, H; Aushev, T; Ayad, R; Babu, V; Badhrees, I; Bahinipati, S; Bakich, A M; Bansal, V; Beleño, C; Berger, M; Bhardwaj, V; Bhuyan, B; Bilka, T; Biswal, J; Bonvicini, G; Bozek, A; Bracko, M; Browder, T E; Cervenkov, D; Chekelian, V; Chen, A; Cheon, B G; Chilikin, K; Cho, K; Choi, S-K; Choi, Y; Choudhury, S; Cinabro, D; Cunliffe, S; Czank, T; Dash, N; Di Carlo, S; Dolezal, Z; Dong, T V; Drásal, Z; Eidelman, S; Epifanov, D; Fast, J E; Fulsom, B G; Garg, R; Gaur, V; Gabyshev, N; Garmash, A; Gelb, M.
Afiliação
  • Sumihama M; Gifu University, Gifu 501-1193.
  • Adachi I; Research Center for Nuclear Physics, Osaka University, Osaka 567-0047.
  • Ahn JK; SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193.
  • Aihara H; High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801.
  • Al Said S; Korea University, Seoul 136-713.
  • Asner DM; Department of Physics, University of Tokyo, Tokyo 113-0033.
  • Atmacan H; Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah 21589.
  • Aushev T; Department of Physics, Faculty of Science, University of Tabuk, Tabuk 71451.
  • Ayad R; Brookhaven National Laboratory, Upton, New York 11973.
  • Babu V; University of South Carolina, Columbia, South Carolina 29208.
  • Badhrees I; Moscow Institute of Physics and Technology, Moscow Region 141700.
  • Bahinipati S; Department of Physics, Faculty of Science, University of Tabuk, Tabuk 71451.
  • Bakich AM; Tata Institute of Fundamental Research, Mumbai 400005.
  • Bansal V; King Abdulaziz City for Science and Technology, Riyadh 11442.
  • Beleño C; Department of Physics, Faculty of Science, University of Tabuk, Tabuk 71451.
  • Berger M; Indian Institute of Technology Bhubaneswar, Satya Nagar 751007.
  • Bhardwaj V; School of Physics, University of Sydney, Sydney, New South Wales 2006.
  • Bhuyan B; Pacific Northwest National Laboratory, Richland, Washington 99352.
  • Bilka T; II. Physikalisches Institut, Georg-August-Universität Göttingen, 37073 Göttingen.
  • Biswal J; Stefan Meyer Institute for Subatomic Physics, Vienna 1090.
  • Bonvicini G; Indian Institute of Science Education and Research Mohali, SAS Nagar, Mohali 140306.
  • Bozek A; Indian Institute of Technology Guwahati, Assam 781039.
  • Bracko M; Faculty of Mathematics and Physics, Charles University, 121 16 Prague.
  • Browder TE; J. Stefan Institute, 1000 Ljubljana.
  • Cervenkov D; Wayne State University, Detroit, Michigan 48202.
  • Chekelian V; H. Niewodniczanski Institute of Nuclear Physics, Krakow 31-342.
  • Chen A; J. Stefan Institute, 1000 Ljubljana.
  • Cheon BG; University of Maribor, 2000 Maribor.
  • Chilikin K; University of Hawaii, Honolulu, Hawaii 96822.
  • Cho K; Faculty of Mathematics and Physics, Charles University, 121 16 Prague.
  • Choi SK; Max-Planck-Institut für Physik, 80805 München.
  • Choi Y; National Central University, Chung-li 32054.
  • Choudhury S; Hanyang University, Seoul 133-791.
  • Cinabro D; P.N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow 119991.
  • Cunliffe S; Korea Institute of Science and Technology Information, Daejeon 305-806.
  • Czank T; Gyeongsang National University, Chinju 660-701.
  • Dash N; Sungkyunkwan University, Suwon 440-746.
  • Di Carlo S; Indian Institute of Technology Hyderabad, Telangana 502285.
  • Dolezal Z; Wayne State University, Detroit, Michigan 48202.
  • Dong TV; Deutsches Elektronen-Synchrotron, 22607 Hamburg.
  • Drásal Z; Department of Physics, Tohoku University, Sendai 980-8578.
  • Eidelman S; Indian Institute of Technology Bhubaneswar, Satya Nagar 751007.
  • Epifanov D; LAL, Univ. Paris-Sud, CNRS/IN2P3, Université Paris-Saclay, Orsay.
  • Fast JE; Faculty of Mathematics and Physics, Charles University, 121 16 Prague.
  • 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; Faculty of Mathematics and Physics, Charles University, 121 16 Prague.
  • Gabyshev N; Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090.
  • Garmash A; P.N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow 119991.
  • Gelb M; Novosibirsk State University, Novosibirsk 630090.
Phys Rev Lett ; 122(7): 072501, 2019 Feb 22.
Article em En | MEDLINE | ID: mdl-30848612
ABSTRACT
We report the first observation of the double strange baryon Ξ(1620)^{0} in its decay to Ξ^{-}π^{+} via Ξ_{c}^{+}→Ξ^{-}π^{+}π^{+} decays based on a 980 fb^{-1} data sample collected with the Belle detector at the KEKB asymmetric-energy e^{+}e^{-} collider. The mass and width are measured to be 1610.4±6.0(stat)_{-4.2}^{+6.1} (syst) MeV/c^{2} and 59.9±4.8(stat)_{-7.1}^{+2.8}(syst) MeV, respectively. We obtain 4.0σ evidence of the Ξ(1690)^{0} with the same data sample. These results shed light on the structure of hyperon resonances with strangeness S=-2.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2019 Tipo de documento: Article
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2019 Tipo de documento: Article