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Phys Rev Lett. 2018 Aug 3;121(5):052003. doi: 10.1103/PhysRevLett.121.052003.

Observation of an Excited Ω^{-} Baryon.

Yelton J1, Adachi I2,3, Ahn JK4, Aihara H5, Al Said S6,7, Asner DM8, Atmacan H9, Aushev T10, Ayad R7, Babu V11, Badhrees I12,7, Bahinipati S13, Bakich AM14, Bansal V15, Beleño C16, Berger M17, Bhardwaj V18, Bhuyan B19, Bilka T20, Biswal J21, Bondar A22,23, Bonvicini G24, Bozek A25, Bračko M21,26, Browder TE27, Červenkov D20, Chekelian V28, Chen A29, Cheon BG30, Chilikin K31, Cho K32, Choi SK33, Choi Y34, Choudhury S35, Cinabro D24, Cunliffe S36, Czank T37, Dash N13, Di Carlo S38, Doležal Z20, Dong TV2,3, Drásal Z20, Eidelman S22,31,23, Epifanov D22,23, Fast JE15, Fulsom BG15, Garg R39, Gaur V40, Gabyshev N22,23, Garmash A22,23, Gelb M41, Giri A35, Goldenzweig P41, Greenwald D42, Guido E43, Haba J2,3, Hayasaka K44, Hayashii H45, Hirose S46, Hou WS47, Inami K46, Inguglia G36, Ishikawa A37, Itoh R2,3, Iwasaki M48, Iwasaki Y3, Jacobs WW49, Jeon HB50, Jia S51, Jin Y5, Joo KK52, Julius T53, Kaliyar AB54, Kang KH50, Karyan G36, Kato Y46, Kiesling C28, Kim DY55, Kim JB4, Kim KT4, Kim SH30, Kinoshita K56, Kodyš P20, Korpar S21,26, Kotchetkov D27, Križan P21,57, Kroeger R58, Krokovny P22,23, Kuhr T59, Kumar R60, Kuzmin A22,23, Kwon YJ61, Lange JS62, Lee IS30, Lee SC50, Li LK63, Li YB64, Li Gioi L28, Libby J54, Liventsev D3,40, Lubej M21, Luo T65, Masuda M66, Matsuda T67, Matvienko D22,31,23, McNeil JT1, Merola M68,69, Miyabayashi K45, Miyata H44, Mizuk R31,70,10, Mohanty GB11, Moon HK4, Mori T46, Mussa R43, Nakano E48, Nakao M2,3, Nanut T21, Nath KJ19, Natkaniec Z25, Niiyama M71, Nisar NK72, Nishida S2,3, Ono H73,44, Pakhlov P31,70, Pakhlova G31,10, Pal B8, Pardi S68, Park H50, Paul S42, Pedlar TK74, Pestotnik R21, Piilonen LE40, Popov V31,10, Ritter M59, Russo G68, Sahoo D11, Sakai Y2,3, Sandilya S56, Santelj L3, Sanuki T37, Savinov V72, Schneider O75, Schnell G76,77, Schwanda C78, Seino Y44, Senyo K79, Sevior ME53, Shebalin V22,23, Shen CP51, Shibata TA80, Shiu JG47, Shwartz B22,23, Simon F28,81, Sokolov A82, Solovieva E31,10, Starič M21, Strube JF15, Sumihama M83, Sumiyoshi T84, Suzuki K17, Takizawa M85,86,87, Tamponi U43, Tanida K88, Tao Y1, Tenchini F53, Uchida M80, Uglov T31,10, Uno S2,3, Urquijo P53, Usov Y22,23, Vahsen SE27, Van Hulse C76, Varner G27, Vorobyev V22,31,23, Vossen A89, Wang B56, Wang CH90, Wang MZ47, Wang P63, Wang XL65, Watanabe M44, Watanuki S37, Widmann E17, Won E4, Ye H36, Yuan CZ63, Yusa Y44, Zakharov S31,10, Zhang ZP91, Zhilich V22,23, Zhukova V31,70, Zhulanov V22,23; Belle Collaboration.

Author information

1
University of Florida, Gainesville, Florida 32611.
2
SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193.
3
High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801.
4
Korea University, Seoul 136-713.
5
Department of Physics, University of Tokyo, Tokyo 113-0033.
6
Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah 21589.
7
Department of Physics, Faculty of Science, University of Tabuk, Tabuk 71451.
8
Brookhaven National Laboratory, Upton, New York 11973.
9
University of South Carolina, Columbia, South Carolina 29208.
10
Moscow Institute of Physics and Technology, Moscow Region 141700.
11
Tata Institute of Fundamental Research, Mumbai 400005.
12
King Abdulaziz City for Science and Technology, Riyadh 11442.
13
Indian Institute of Technology Bhubaneswar, Satya Nagar 751007.
14
School of Physics, University of Sydney, New South Wales 2006.
15
Pacific Northwest National Laboratory, Richland, Washington 99352.
16
II. Physikalisches Institut, Georg-August-Universität Göttingen, 37073 Göttingen.
17
Stefan Meyer Institute for Subatomic Physics, Vienna 1090.
18
Indian Institute of Science Education and Research Mohali, SAS Nagar, 140306.
19
Indian Institute of Technology Guwahati, Assam 781039.
20
Faculty of Mathematics and Physics, Charles University, 121 16 Prague.
21
J. Stefan Institute, 1000 Ljubljana.
22
Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090.
23
Novosibirsk State University, Novosibirsk 630090.
24
Wayne State University, Detroit, Michigan 48202.
25
H. Niewodniczanski Institute of Nuclear Physics, Krakow 31-342.
26
University of Maribor, 2000 Maribor.
27
University of Hawaii, Honolulu, Hawaii 96822.
28
Max-Planck-Institut für Physik, 80805 München.
29
National Central University, Chung-li 32054.
30
Hanyang University, Seoul 133-791.
31
P.N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow 119991.
32
Korea Institute of Science and Technology Information, Daejeon 305-806.
33
Gyeongsang National University, Chinju 660-701.
34
Sungkyunkwan University, Suwon 440-746.
35
Indian Institute of Technology Hyderabad, Telangana 502285.
36
Deutsches Elektronen-Synchrotron, 22607 Hamburg.
37
Department of Physics, Tohoku University, Sendai 980-8578.
38
LAL, Univ. Paris-Sud, CNRS/IN2P3, Université Paris-Saclay, Orsay.
39
Panjab University, Chandigarh 160014.
40
Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061.
41
Institut für Experimentelle Kernphysik, Karlsruher Institut für Technologie, 76131 Karlsruhe.
42
Department of Physics, Technische Universität München, 85748 Garching.
43
INFN-Sezione di Torino, 10125 Torino.
44
Niigata University, Niigata 950-2181.
45
Nara Women's University, Nara 630-8506.
46
Graduate School of Science, Nagoya University, Nagoya 464-8602.
47
Department of Physics, National Taiwan University, Taipei 10617.
48
Osaka City University, Osaka 558-8585.
49
Indiana University, Bloomington, Indiana 47408.
50
Kyungpook National University, Daegu 702-701.
51
Beihang University, Beijing 100191.
52
Chonnam National University, Kwangju 660-701.
53
School of Physics, University of Melbourne, Victoria 3010.
54
Indian Institute of Technology Madras, Chennai 600036.
55
Soongsil University, Seoul 156-743.
56
University of Cincinnati, Cincinnati, Ohio 45221.
57
Faculty of Mathematics and Physics, University of Ljubljana, 1000 Ljubljana.
58
University of Mississippi, University, Mississippi 38677.
59
Ludwig Maximilians University, 80539 Munich.
60
Punjab Agricultural University, Ludhiana 141004.
61
Yonsei University, Seoul 120-749.
62
Justus-Liebig-Universität Gießen, 35392 Gießen.
63
Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049.
64
Peking University, Beijing 100871.
65
Key Laboratory of Nuclear Physics and Ion-beam Application (MOE) and Institute of Modern Physics, Fudan University, Shanghai 200443.
66
Earthquake Research Institute, University of Tokyo, Tokyo 113-0032.
67
University of Miyazaki, Miyazaki 889-2192.
68
INFN-Sezione di Napoli, 80126 Napoli.
69
Università di Napoli Federico II, 80055 Napoli.
70
Moscow Physical Engineering Institute, Moscow 115409.
71
Kyoto University, Kyoto 606-8502.
72
University of Pittsburgh, Pittsburgh, Pennsylvania 15260.
73
Nippon Dental University, Niigata 951-8580.
74
Luther College, Decorah, Iowa 52101.
75
École Polytechnique Fédérale de Lausanne (EPFL), Lausanne 1015.
76
University of the Basque Country UPV/EHU, 48080 Bilbao.
77
IKERBASQUE, Basque Foundation for Science, 48013 Bilbao.
78
Institute of High Energy Physics, Vienna 1050.
79
Yamagata University, Yamagata 990-8560.
80
Tokyo Institute of Technology, Tokyo 152-8550.
81
Excellence Cluster Universe, Technische Universität München, 85748 Garching.
82
Institute for High Energy Physics, Protvino 142281.
83
Gifu University, Gifu 501-1193.
84
Tokyo Metropolitan University, Tokyo 192-0397.
85
J-PARC Branch, KEK Theory Center, High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801.
86
Theoretical Research Division, Nishina Center, RIKEN, Saitama 351-0198.
87
Showa Pharmaceutical University, Tokyo 194-8543.
88
Advanced Science Research Center, Japan Atomic Energy Agency, Naka 319-1195.
89
Duke University, Durham, North Carolina 27708.
90
National United University, Miao Li 36003.
91
University of Science and Technology of China, Hefei 230026.

Abstract

Using data recorded with the Belle detector, we observe a new excited hyperon, an Ω^{*-} candidate decaying into Ξ^{0}K^{-} and Ξ^{-}K_{S}^{0} with a mass of 2012.4±0.7(stat)±0.6(syst)  MeV/c^{2} and a width of Γ=6.4_{-2.0}^{+2.5}(stat)±1.6(syst)  MeV. The Ω^{*-} is seen primarily in ϒ(1S),ϒ(2S), and ϒ(3S) decays.

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