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Observation of Transverse Λ/Λ[over ¯] Hyperon Polarization in e
Guan, Y; Vossen, A; Adachi, I; Adamczyk, K; Ahn, J K; Aihara, H; Al Said, S; Asner, D M; Atmacan, H; Aulchenko, V; Aushev, T; Ayad, R; Babu, V; Badhrees, I; Bakich, A M; Bansal, V; Behera, P; Beleño, C; Berger, M; 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, S-K; Choi, Y; Cinabro, D; Cunliffe, S; Dash, N; Di Carlo, S; Dingfelder, J; Dolezal, Z; Dong, T V; Drásal, Z; Eidelman, S; Epifanov, D; Fast, J E; Ferber, T.
Afiliación
  • Guan Y; Duke University, Durham, North Carolina 27708.
  • Vossen A; High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801.
  • Adachi I; Indiana University, Bloomington, Indiana 47408.
  • Adamczyk K; Duke University, Durham, North Carolina 27708.
  • Ahn JK; Indiana University, Bloomington, Indiana 47408.
  • Aihara H; SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193.
  • Al Said S; High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801.
  • Asner DM; H. Niewodniczanski Institute of Nuclear Physics, Krakow 31-342.
  • Atmacan H; Korea University, Seoul 136-713.
  • Aulchenko V; Department of Physics, University of Tokyo, Tokyo 113-0033.
  • Aushev T; Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah 21589.
  • Ayad R; Department of Physics, Faculty of Science, University of Tabuk, Tabuk 71451.
  • Babu V; Brookhaven National Laboratory, Upton, New York 11973.
  • Badhrees I; University of South Carolina, Columbia, South Carolina 29208.
  • Bakich AM; Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090.
  • Bansal V; Novosibirsk State University, Novosibirsk 630090.
  • Behera P; Moscow Institute of Physics and Technology, Moscow Region 141700.
  • Beleño C; Department of Physics, Faculty of Science, University of Tabuk, Tabuk 71451.
  • Berger M; Tata Institute of Fundamental Research, Mumbai 400005.
  • Bhardwaj V; King Abdulaziz City for Science and Technology, Riyadh 11442.
  • Bhuyan B; Department of Physics, Faculty of Science, University of Tabuk, Tabuk 71451.
  • Bilka T; School of Physics, University of Sydney, New South Wales 2006.
  • Biswal J; Pacific Northwest National Laboratory, Richland, Washington 99352.
  • Bobrov A; Indian Institute of Technology Madras, Chennai 600036.
  • Bonvicini G; II. Physikalisches Institut, Georg-August-Universität Göttingen, 37073 Göttingen.
  • Bozek A; Stefan Meyer Institute for Subatomic Physics, Vienna 1090.
  • Bracko M; Indian Institute of Science Education and Research Mohali, SAS Nagar, 140306.
  • Browder TE; Indian Institute of Technology Guwahati, Assam 781039.
  • Cao L; Faculty of Mathematics and Physics, Charles University, 121 16 Prague.
  • Cervenkov D; J. Stefan Institute, 1000 Ljubljana.
  • Chang P; Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090.
  • Chekelian V; Novosibirsk State University, Novosibirsk 630090.
  • Chen A; Wayne State University, Detroit, Michigan 48202.
  • Cheon BG; H. Niewodniczanski Institute of Nuclear Physics, Krakow 31-342.
  • Chilikin K; J. Stefan Institute, 1000 Ljubljana.
  • Cho K; University of Maribor, 2000 Maribor.
  • Choi SK; University of Hawaii, Honolulu, Hawaii 96822.
  • Choi Y; Institut für Experimentelle Teilchenphysik, Karlsruher Institut für Technologie, 76131 Karlsruhe.
  • Cinabro D; Faculty of Mathematics and Physics, Charles University, 121 16 Prague.
  • Cunliffe S; Department of Physics, National Taiwan University, Taipei 10617.
  • Dash N; Max-Planck-Institut für Physik, 80805 München.
  • Di Carlo S; National Central University, Chung-li 32054.
  • Dingfelder J; Hanyang University, Seoul 133-791.
  • Dolezal Z; P.N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow 119991.
  • Dong TV; Korea Institute of Science and Technology Information, Daejeon 305-806.
  • Drásal Z; Gyeongsang National University, Chinju 660-701.
  • Eidelman S; Sungkyunkwan University, Suwon 440-746.
  • Epifanov D; Wayne State University, Detroit, Michigan 48202.
  • Fast JE; Deutsches Elektronen-Synchrotron, 22607 Hamburg.
  • Ferber T; Indian Institute of Technology Bhubaneswar, Satya Nagar 751007.
Phys Rev Lett ; 122(4): 042001, 2019 Feb 01.
Article en En | MEDLINE | ID: mdl-30768311
ABSTRACT
We report the first observation of the spontaneous polarization of Λ and Λ[over ¯] hyperons transverse to the production plane in e^{+}e^{-} annihilation, which is attributed to the effect arising from a polarizing fragmentation function. For inclusive Λ/Λ[over ¯] production, we also report results with subtracted feed-down contributions from Σ^{0} and charm. This measurement uses a dataset of 800.4 fb^{-1} collected by the Belle experiment at or near a center-of-mass energy of 10.58 GeV. We observe a significant polarization that rises with the fractional energy carried by the Λ/Λ[over ¯] hyperon.
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Texto completo: 1 Colección: 01-internacional Banco de datos: MEDLINE Idioma: En Revista: Phys Rev Lett Año: 2019 Tipo del documento: Article
Texto completo
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Texto completo: 1 Colección: 01-internacional Banco de datos: MEDLINE Idioma: En Revista: Phys Rev Lett Año: 2019 Tipo del documento: Article