Content area
Abstract
We report the first observation of the charmed-strange baryon with a significance greater than 5. The is found in its decay to in decays. The measured mass and width are MeV/ and MeV, respectively, and the product branching fraction is . We also measure with improved precision, and search for the charmonium-like state Y(4660) and its spin partner, , in the invariant mass spectrum. No clear signals of the Y(4660) nor its spin partner 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.
Details
Title
Observation of Ξ c ( 2930 ) 0 and updated measurement of B - → K - Λ c + Λ ¯ c - at Belle
Author
Li, Y B 1 ; Shen, C P 2 ; Adachi, I 3 ; Ahn, J K 4 ; Aihara, H 5 ; S Al Said 6 ; Asner, D M 7 ; Aushev, T 8 ; Ayad, R 9 ; Babu, V 10 ; Badhrees, I 11 ; Bakich, A M 12 ; Ban, Y 1 ; Bansal, V 7 ; Behera, P 13 ; Berger, M 14 ; Bhardwaj, V 15 ; Bhuyan, B 16 ; Biswal, J 17 ; Bonvicini, G 18 ; Bozek, A 19 ; Bračko, M 20 ; Browder, T E 21 ; Červenkov, D 22 ; Chekelian, V 23 ; Chen, A 24 ; Cheon, B G 25 ; Chilikin, K 26 ; Cho, K 27 ; S-K, Choi 28 ; Choi, Y 29 ; Cinabro, D 18 ; Cunliffe, S 7 ; Dash, N 30 ; S Di Carlo 18 ; Doležal, Z 22 ; Drásal, Z 22 ; Eidelman, S 31 ; Epifanov, D 31 ; Fast, J E 7 ; Ferber, T 32 ; Fulsom, B G 7 ; Garg, R 33 ; Gaur, V 34 ; Gabyshev, N 31 ; Garmash, A 31 ; Gelb, M 35 ; Giri, A 36 ; Goldenzweig, P 35 ; Guido, E 37 ; Haba, J 3 ; Hara, T 3 ; Hayasaka, K 38 ; Hayashii, H 39 ; Hedges, M T 21 ; W-S Hou 40 ; Iijima, T 41 ; Inami, K 42 ; Inguglia, G 32 ; Ishikawa, A 43 ; Itoh, R 3 ; Iwasaki, M 44 ; Iwasaki, Y 45 ; Jacobs, W W 46 ; Jia, S 2 ; Jin, Y 5 ; Joo, K K 47 ; Julius, T 48 ; Karyan, G 32 ; Kato, Y 42 ; Kawasaki, T 38 ; Kichimi, H 45 ; Kiesling, C 23 ; Kim, D Y 49 ; Kim, J B 4 ; Kim, K T 4 ; Kim, S H 25 ; Kinoshita, K 50 ; Kodyš, P 22 ; Korpar, S 20 ; Kotchetkov, D 21 ; Križan, P 51 ; Kroeger, R 52 ; Krokovny, P 31 ; Kulasiri, R 53 ; Kumita, T 54 ; Kuzmin, A 31 ; Y-J, Kwon 55 ; Lee, I S 25 ; Lee, S C 56 ; Li, L K 57 ; L Li Gioi 23 ; Libby, J 13 ; Liventsev, D 58 ; Lubej, M 17 ; Luo, T 59 ; MacNaughton, J 45 ; Masuda, M 60 ; Matsuda, T 61 ; Merola, M 62 ; Miyabayashi, K 39 ; Miyata, H 38 ; Mizuk, R 63 ; Mohanty, G B 10 ; Moon, H K 4 ; Mori, T 42 ; Mrvar, M 17 ; Mussa, R 37 ; Nakano, E 44 ; Nakao, M 3 ; Nanut, T 17 ; Nath, K J 16 ; Natkaniec, Z 19 ; Nayak, M 64 ; Niiyama, M 65 ; Nishida, S 3 ; Ogawa, S 66 ; Pakhlov, P 26 ; Pakhlova, G 67 ; Pal, B 50 ; Pardi, S 62 ; Park, C W 29 ; Park, H 56 ; Paul, S 68 ; Pedlar, T K 69 ; Pestotnik, R 17 ; Piilonen, L E 34 ; Popov, V 8 ; Rostomyan, A 32 ; Russo, G 62 ; Sakai, Y 3 ; Salehi, M 70 ; Sandilya, S 50 ; Santelj, L 45 ; Sanuki, T 43 ; Schneider, O 71 ; Schnell, G 72 ; Schwanda, C 73 ; Seino, Y 38 ; Shebalin, V 31 ; T-A Shibata 74 ; J-G Shiu 40 ; Shwartz, B 31 ; Sokolov, A 75 ; Solovieva, E 67 ; Starič, M 17 ; Strube, J F 7 ; Sumihama, M 76 ; Sumiyoshi, T 54 ; Takizawa, M 77 ; Tamponi, U 78 ; Tanida, K 79 ; Tenchini, F 48 ; Uchida, M 74 ; Uglov, T 67 ; Unno, Y 25 ; Uno, S 3 ; C Van Hulse 80 ; Varner, G 21 ; Vorobyev, V 31 ; Vossen, A 46 ; Waheed, E 48 ; Wang, B 50 ; Wang, C H 81 ; M-Z, Wang 40 ; Wang, P 57 ; Wang, X L 59 ; Watanabe, M 38 ; Watanabe, Y 82 ; Widmann, E 14 ; Won, E 4 ; H Ye 32 ; Yelton, J 83 ; Yuan, C Z 57 ; Yusa, Y 38 ; Zakharov, S 67 ; Zhang, Z P 84 ; Zhilich, V 31 ; Zhukova, V 26 ; Zhulanov, V 31
1 Peking University, Beijing, China
2 Beihang University, Beijing, China
3 SOKENDAI (The Graduate University for Advanced Studies), Hayama, Japan; High Energy Accelerator Research Organization (KEK), Tsukuba, Japan
4 Korea University, Seoul, South Korea
5 Department of Physics, University of Tokyo, Tokyo, Japan
6 Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia; Department of Physics, Faculty of Science, University of Tabuk, Tabuk, Saudi Arabia
7 Pacific Northwest National Laboratory, Richland, WA, USA
8 Moscow Institute of Physics and Technology, Moscow, Moscow Region, Russia
9 Department of Physics, Faculty of Science, University of Tabuk, Tabuk, Saudi Arabia
10 Tata Institute of Fundamental Research, Mumbai, India
11 King Abdulaziz City for Science and Technology, Riyadh, Saudi Arabia; Department of Physics, Faculty of Science, University of Tabuk, Tabuk, Saudi Arabia
12 School of Physics, University of Sydney, Sydney, NSW, Australia
13 Indian Institute of Technology Madras, Chennai, India
14 Stefan Meyer Institute for Subatomic Physics, Vienna, Austria
15 Indian Institute of Science Education and Research Mohali, SAS Nagar, India
16 Indian Institute of Technology Guwahati, Guwahati, Assam, India
17 J. Stefan Institute, Ljubljana, Slovenia
18 Wayne State University, Detroit, MI, USA
19 H. Niewodniczanski Institute of Nuclear Physics, Kraków, Poland
20 J. Stefan Institute, Ljubljana, Slovenia; University of Maribor, Maribor, Slovenia
21 University of Hawaii, Honolulu, HI, USA
22 Faculty of Mathematics and Physics, Charles University, Prague, Czech Republic
23 Max-Planck-Institut für Physik, Munich, Germany
24 National Central University, Chung-li, Taiwan
25 Hanyang University, Seoul, South Korea
26 P.N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow, Russia; Moscow Physical Engineering Institute, Moscow, Russia
27 Korea Institute of Science and Technology Information, Daejeon, South Korea
28 Gyeongsang National University, Chinju, South Korea
29 Sungkyunkwan University, Suwon, South Korea
30 Indian Institute of Technology Bhubaneswar, Bhubaneswar, India
31 Budker Institute of Nuclear Physics SB RAS, Novosibirsk, Russia; Novosibirsk State University, Novosibirsk, Russia
32 Deutsches Elektronen-Synchrotron, Hamburg, Germany
33 Panjab University, Chandigarh, India
34 Virginia Polytechnic Institute and State University, Blacksburg, VA, USA
35 Institut für Experimentelle Kernphysik, Karlsruher Institut für Technologie, Karlsruhe, Germany
36 Indian Institute of Technology Hyderabad, Sangareddy, Telangana, India
37 INFN-Sezione di Torino, Turin, Italy
38 Niigata University, Niigata, Japan
39 Nara Women’s University, Nara, Japan
40 Department of Physics, National Taiwan University, Taipei, Taiwan
41 Graduate School of Science, Nagoya University, Nagoya, Japan; Kobayashi-Maskawa Institute, Nagoya University, Nagoya, Japan
42 Graduate School of Science, Nagoya University, Nagoya, Japan
43 Department of Physics, Tohoku University, Sendai, Japan
44 Osaka City University, Osaka, Japan
45 High Energy Accelerator Research Organization (KEK), Tsukuba, Japan
46 Indiana University, Bloomington, IN, USA
47 Chonnam National University, Kwangju, South Korea
48 School of Physics, University of Melbourne, Melbourne, VIC, Australia
49 Soongsil University, Seoul, South Korea
50 University of Cincinnati, Cincinnati, OH, USA
51 J. Stefan Institute, Ljubljana, Slovenia; Faculty of Mathematics and Physics, University of Ljubljana, Ljubljana, Slovenia
52 University of Mississippi, University, MS, USA
53 Kennesaw State University, Kennesaw, Georgia
54 Tokyo Metropolitan University, Tokyo, Japan
55 Yonsei University, Seoul, South Korea
56 Kyungpook National University, Daegu, South Korea
57 Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, China
58 High Energy Accelerator Research Organization (KEK), Tsukuba, Japan; Virginia Polytechnic Institute and State University, Blacksburg, VA, USA
59 Fudan University, Shanghai, China
60 Earthquake Research Institute, University of Tokyo, Tokyo, Japan
61 University of Miyazaki, Miyazaki, Japan
62 INFN-Sezione di Napoli, Naples, Italy
63 P.N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow, Russia; Moscow Physical Engineering Institute, Moscow, Russia; Moscow Institute of Physics and Technology, Moscow, Moscow Region, Russia
64 High Energy Accelerator Research Organization (KEK), Tsukuba, Japan; Wayne State University, Detroit, MI, USA
65 Kyoto University, Kyoto, Japan
66 Toho University, Funabashi, Japan
67 P.N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow, Russia; Moscow Institute of Physics and Technology, Moscow, Moscow Region, Russia
68 Department of Physics, Technische Universität München, Garching, Germany
69 Luther College, Decorah, IA, USA
70 Ludwig Maximilians University, Munich, Germany; University of Malaya, Kuala Lumpur, Malaysia
71 École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
72 University of the Basque Country UPV/EHU, Bilbao, Spain; IKERBASQUE, Basque Foundation for Science, Bilbao, Spain
73 Institute of High Energy Physics, Vienna, Austria
74 Tokyo Institute of Technology, Tokyo, Japan
75 Institute for High Energy Physics, Protvino, Russia
76 Gifu University, Gifu, Japan
77 J-PARC Branch, KEK Theory Center, High Energy Accelerator Research Organization (KEK), Tsukuba, Japan; Theoretical Research Division, Nishina Center, RIKEN, Saitama, Japan; Showa Pharmaceutical University, Tokyo, China
78 INFN-Sezione di Torino, Turin, Italy; University of Torino, Turin, Italy
79 Advanced Science Research Center, Japan Atomic Energy Agency, Naka, Japan
80 University of the Basque Country UPV/EHU, Bilbao, Spain
81 National United University, Miao Li, Taiwan
82 Kanagawa University, Yokohama, Japan
83 University of Florida, Gainesville, FL, USA
84 University of Science and Technology of China, Hefei, China
1 Peking University, Beijing, China
2 Beihang University, Beijing, China
3 SOKENDAI (The Graduate University for Advanced Studies), Hayama, Japan; High Energy Accelerator Research Organization (KEK), Tsukuba, Japan
4 Korea University, Seoul, South Korea
5 Department of Physics, University of Tokyo, Tokyo, Japan
6 Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia; Department of Physics, Faculty of Science, University of Tabuk, Tabuk, Saudi Arabia
7 Pacific Northwest National Laboratory, Richland, WA, USA
8 Moscow Institute of Physics and Technology, Moscow, Moscow Region, Russia
9 Department of Physics, Faculty of Science, University of Tabuk, Tabuk, Saudi Arabia
10 Tata Institute of Fundamental Research, Mumbai, India
11 King Abdulaziz City for Science and Technology, Riyadh, Saudi Arabia; Department of Physics, Faculty of Science, University of Tabuk, Tabuk, Saudi Arabia
12 School of Physics, University of Sydney, Sydney, NSW, Australia
13 Indian Institute of Technology Madras, Chennai, India
14 Stefan Meyer Institute for Subatomic Physics, Vienna, Austria
15 Indian Institute of Science Education and Research Mohali, SAS Nagar, India
16 Indian Institute of Technology Guwahati, Guwahati, Assam, India
17 J. Stefan Institute, Ljubljana, Slovenia
18 Wayne State University, Detroit, MI, USA
19 H. Niewodniczanski Institute of Nuclear Physics, Kraków, Poland
20 J. Stefan Institute, Ljubljana, Slovenia; University of Maribor, Maribor, Slovenia
21 University of Hawaii, Honolulu, HI, USA
22 Faculty of Mathematics and Physics, Charles University, Prague, Czech Republic
23 Max-Planck-Institut für Physik, Munich, Germany
24 National Central University, Chung-li, Taiwan
25 Hanyang University, Seoul, South Korea
26 P.N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow, Russia; Moscow Physical Engineering Institute, Moscow, Russia
27 Korea Institute of Science and Technology Information, Daejeon, South Korea
28 Gyeongsang National University, Chinju, South Korea
29 Sungkyunkwan University, Suwon, South Korea
30 Indian Institute of Technology Bhubaneswar, Bhubaneswar, India
31 Budker Institute of Nuclear Physics SB RAS, Novosibirsk, Russia; Novosibirsk State University, Novosibirsk, Russia
32 Deutsches Elektronen-Synchrotron, Hamburg, Germany
33 Panjab University, Chandigarh, India
34 Virginia Polytechnic Institute and State University, Blacksburg, VA, USA
35 Institut für Experimentelle Kernphysik, Karlsruher Institut für Technologie, Karlsruhe, Germany
36 Indian Institute of Technology Hyderabad, Sangareddy, Telangana, India
37 INFN-Sezione di Torino, Turin, Italy
38 Niigata University, Niigata, Japan
39 Nara Women’s University, Nara, Japan
40 Department of Physics, National Taiwan University, Taipei, Taiwan
41 Graduate School of Science, Nagoya University, Nagoya, Japan; Kobayashi-Maskawa Institute, Nagoya University, Nagoya, Japan
42 Graduate School of Science, Nagoya University, Nagoya, Japan
43 Department of Physics, Tohoku University, Sendai, Japan
44 Osaka City University, Osaka, Japan
45 High Energy Accelerator Research Organization (KEK), Tsukuba, Japan
46 Indiana University, Bloomington, IN, USA
47 Chonnam National University, Kwangju, South Korea
48 School of Physics, University of Melbourne, Melbourne, VIC, Australia
49 Soongsil University, Seoul, South Korea
50 University of Cincinnati, Cincinnati, OH, USA
51 J. Stefan Institute, Ljubljana, Slovenia; Faculty of Mathematics and Physics, University of Ljubljana, Ljubljana, Slovenia
52 University of Mississippi, University, MS, USA
53 Kennesaw State University, Kennesaw, Georgia
54 Tokyo Metropolitan University, Tokyo, Japan
55 Yonsei University, Seoul, South Korea
56 Kyungpook National University, Daegu, South Korea
57 Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, China
58 High Energy Accelerator Research Organization (KEK), Tsukuba, Japan; Virginia Polytechnic Institute and State University, Blacksburg, VA, USA
59 Fudan University, Shanghai, China
60 Earthquake Research Institute, University of Tokyo, Tokyo, Japan
61 University of Miyazaki, Miyazaki, Japan
62 INFN-Sezione di Napoli, Naples, Italy
63 P.N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow, Russia; Moscow Physical Engineering Institute, Moscow, Russia; Moscow Institute of Physics and Technology, Moscow, Moscow Region, Russia
64 High Energy Accelerator Research Organization (KEK), Tsukuba, Japan; Wayne State University, Detroit, MI, USA
65 Kyoto University, Kyoto, Japan
66 Toho University, Funabashi, Japan
67 P.N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow, Russia; Moscow Institute of Physics and Technology, Moscow, Moscow Region, Russia
68 Department of Physics, Technische Universität München, Garching, Germany
69 Luther College, Decorah, IA, USA
70 Ludwig Maximilians University, Munich, Germany; University of Malaya, Kuala Lumpur, Malaysia
71 École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
72 University of the Basque Country UPV/EHU, Bilbao, Spain; IKERBASQUE, Basque Foundation for Science, Bilbao, Spain
73 Institute of High Energy Physics, Vienna, Austria
74 Tokyo Institute of Technology, Tokyo, Japan
75 Institute for High Energy Physics, Protvino, Russia
76 Gifu University, Gifu, Japan
77 J-PARC Branch, KEK Theory Center, High Energy Accelerator Research Organization (KEK), Tsukuba, Japan; Theoretical Research Division, Nishina Center, RIKEN, Saitama, Japan; Showa Pharmaceutical University, Tokyo, China
78 INFN-Sezione di Torino, Turin, Italy; University of Torino, Turin, Italy
79 Advanced Science Research Center, Japan Atomic Energy Agency, Naka, Japan
80 University of the Basque Country UPV/EHU, Bilbao, Spain
81 National United University, Miao Li, Taiwan
82 Kanagawa University, Yokohama, Japan
83 University of Florida, Gainesville, FL, USA
84 University of Science and Technology of China, Hefei, China
Pages
1-8
Publication year
2018
Publication date
Mar 2018
ISSN
14346044
e-ISSN
14346052
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2017353684
Copyright
The European Physical Journal C is a copyright of Springer, (2018). All Rights Reserved.