https://doi.org/10.1140/epjc/s10052-018-6425-5
Regular Article - Experimental Physics
Evidence of a structure in 
consistent with a charged 
, and updated measurement of 
at Belle
Belle Collaboration
1
University of the Basque Country UPV/EHU, 48080, Bilbao, Spain
2
Beihang University, Beijing, 100191, China
3
University of Bonn, 53115, Bonn, Germany
4
Brookhaven National Laboratory, Upton, NY, 11973, USA
5
Budker Institute of Nuclear Physics SB RAS, Novosibirsk, 630090, Russia
6
Faculty of Mathematics and Physics, Charles University, 121 16, Prague, Czech Republic
7
Chonnam National University, Kwangju, 660-701, South Korea
8
University of Cincinnati, Cincinnati, OH, 45221, USA
9
Deutsches Elektronen-Synchrotron, 22607, Hamburg, Germany
10
University of Florida, Gainesville, FL, 32611, USA
11
Key Laboratory of Nuclear Physics and Ion-beam Application (MOE) and Institute of Modern Physics, Fudan University, Shanghai, 200443, China
12
Justus-Liebig-Universität Gießen, 35392, Giessen, Germany
13
Gifu University, Gifu, 501-1193, Japan
14
II. Physikalisches Institut, Georg-August-Universität Göttingen, 37073, Göttingen, Germany
15
SOKENDAI (The Graduate University for Advanced Studies), Hayama, 240-0193, Japan
16
Gyeongsang National University, Chinju, 660-701, South Korea
17
Hanyang University, Seoul, 133-791, South Korea
18
University of Hawaii, Honolulu, HI, 96822, USA
19
High Energy Accelerator Research Organization (KEK), Tsukuba, 305-0801, Japan
20
J-PARC Branch, KEK Theory Center, High Energy Accelerator Research Organization (KEK), Tsukuba, 305-0801, Japan
21
Forschungszentrum Jülich, 52425, Jülich, Germany
22
IKERBASQUE, Basque Foundation for Science, 48013, Bilbao, Spain
23
Indian Institute of Science Education and Research Mohali, SAS Nagar, 140306, India
24
Indian Institute of Technology Bhubaneswar, Satya Nagar, Bhubaneswar, 751007, India
25
Indian Institute of Technology Guwahati, Guwahati, Assam, 781039, India
26
Indian Institute of Technology Hyderabad, Sangareddy, Telangana, 502285, India
27
Indian Institute of Technology Madras, Chennai, 600036, India
28
Indiana University, Bloomington, IN, 47408, USA
29
Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China
30
Institute of High Energy Physics, 1050, Vienna, Austria
31
INFN-Sezione di Napoli, 80126, Naples, Italy
32
INFN-Sezione di Torino, 10125, Turin, Italy
33
Advanced Science Research Center, Japan Atomic Energy Agency, Naka, 319-1195, Japan
34
J. Stefan Institute, 1000, Ljubljana, Slovenia
35
Kanagawa University, Yokohama, 221-8686, Japan
36
Institut für Experimentelle Kernphysik, Karlsruher Institut für Technologie, 76131, Karlsruhe, Germany
37
King Abdulaziz City for Science and Technology, Riyadh, 11442, Saudi Arabia
38
Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
39
Korea Institute of Science and Technology Information, Daejeon, 305-806, South Korea
40
Korea University, Seoul, 136-713, South Korea
41
Kyungpook National University, Daegu, 702-701, South Korea
42
LAL, Univ. Paris-Sud, CNRS/IN2P3, Université Paris-Saclay, Orsay, France
43
École Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland
44
P.N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow, 119991, Russia
45
Faculty of Mathematics and Physics, University of Ljubljana, 1000, Ljubljana, Slovenia
46
Ludwig Maximilians University, 80539, Munich, Germany
47
Luther College, Decorah, IA, 52101, USA
48
University of Malaya, 50603, Kuala Lumpur, Malaysia
49
University of Maribor, 2000, Maribor, Slovenia
50
Max-Planck-Institut für Physik, 80805, Munich, Germany
51
School of Physics, University of Melbourne, Melbourne, VIC, 3010, Australia
52
University of Mississippi, University, MS, 38677, USA
53
Moscow Physical Engineering Institute, Moscow, 115409, Russia
54
Moscow Institute of Physics and Technology, Moscow, Moscow Region, 141700, Russia
55
Graduate School of Science, Nagoya University, Nagoya, 464-8602, Japan
56
Kobayashi-Maskawa Institute, Nagoya University, Nagoya, 464-8602, Japan
57
Università di Napoli Federico II, 80055, Naples, Italy
58
National Central University, Chung-li, 32054, Taiwan
59
National United University, Miao Li, 36003, Taiwan
60
Department of Physics, National Taiwan University, Taipei, 10617, Taiwan
61
H. Niewodniczanski Institute of Nuclear Physics, 31-342, Krakow, Poland
62
Nippon Dental University, Niigata, 951-8580, Japan
63
Niigata University, Niigata, 950-2181, Japan
64
Novosibirsk State University, Novosibirsk, 630090, Russia
65
Osaka City University, Osaka, 558-8585, Japan
66
Pacific Northwest National Laboratory, Richland, WA, 99352, USA
67
Panjab University, Chandigarh, 160014, India
68
Peking University, Beijing, 100871, China
69
University of Pittsburgh, Pittsburgh, PA, 15260, USA
70
Theoretical Research Division, Nishina Center, RIKEN, Saitama, 351-0198, Japan
71
University of Science and Technology of China, Hefei, 230026, China
72
Showa Pharmaceutical University, Tokyo, 194-8543, China
73
Soongsil University, Seoul, 156-743, South Korea
74
Stefan Meyer Institute for Subatomic Physics, 1090, Vienna, Austria
75
Sungkyunkwan University, Suwon, 440-746, South Korea
76
School of Physics, University of Sydney, Sydney, NSW, 2006, Australia
77
Department of Physics, Faculty of Science, University of Tabuk, Tabuk, 71451, Saudi Arabia
78
Tata Institute of Fundamental Research, Mumbai, 400005, India
79
Department of Physics, Technische Universität München, 85748, Garching, Germany
80
Department of Physics, Tohoku University, Sendai, 980-8578, Japan
81
Department of Physics, University of Tokyo, Tokyo, 113-0033, Japan
82
Tokyo Institute of Technology, Tokyo, 152-8550, Japan
83
Tokyo Metropolitan University, Tokyo, 192-0397, Japan
84
Virginia Polytechnic Institute and State University, Blacksburg, VA, 24061, USA
85
Wayne State University, Detroit, MI, 48202, USA
86
Yamagata University, Yamagata, 990-8560, Japan
87
Yonsei University, Seoul, 120-749, South Korea
* e-mail: shencp@ihep.ac.cn
Received:
25
June
2018
Accepted:
7
November
2018
Published online:
13
November
2018
We report evidence for the charged charmed-strange baryon 
with a signal significance of 3.9
with systematic errors included. The charged is found in its decay to 
in the substructure of 
decays. The measured mass and width are 
MeV/
and 
MeV, respectively, and the product branching fraction is 
. We also measure 
with greater precision than previous experiments, and present the results of a search for the charmonium-like state Y(4660) and its spin partner, 
, in the 
invariant mass spectrum. No clear signals of the Y(4660) or are observed and the 90% credibility level (C.L.) upper limits on their production rates are determined. These measurements are obtained from a sample of 
pairs collected at the 
resonance by the Belle detector at the KEKB asymmetric energy electron-positron collider.
© The Author(s), 2018
