Evidence of a structure in anti K0Λc+ consistent with a charged Ξc(2930)+, and updated measurement of anti B0 → anti K0Λc+ anti Λc- at Belle

Li, Y.B.; Ban, Y.; Shen, C.P.; Jia, S.; Adachi, I.; Dong, T.V.; Haba, J.; Itoh, R.; Nishida, S.; Sakai, Y.; Uno, S.; Aihara, H.; Jin, Y.; Al Said, S.; Asner, D.M.; Pal, B.; Aushev, T.; Ayad, R.; Babu, V.; Badhrees, I.; Bahinipati, S.; Dash, N.; Bansal, V.; Fast, J.E.; Fulsom, B.G.; Strube, J.F.; Behera, P.; Kaliyar, A.B.; Libby, J.; Beleno, C.; Bhardwaj, V.; Bhuyan, B.; Nath, K.J.; Biswal, J.; Nanut, T.; Pestotnik, R.; Staric, M.; Bobrov, A.; Epifanov, D.; Gabyshev, N.; Garmash, A.; Krokovny, P.; Usov, Y.; Zhilich, V.; Zhulanov, V.; Bozek, A.; Natkaniec, Z.; Bracko, M.; Korpar, S.; Browder, T.E.; Kotchetkov, D.; Nishimura, K.; Varner, G.; Cao, L.; Gelb, M.; Goldenzweig, P.; Tonder, R. van; Cervenkov, D.; Dolezal, Z.; Drasal, Z.; Kodys, P.; Chang, P.; Hou, W.S.; Shiu, J.G.; Wang, M.Z.; Chekelian, V.; Li Gioi, L.; Chen, A.; Cheon, B.G.; Kim, S.H.; Lee, I.S.; Unno, Y.; Chilikin, K.; Cho, K.; Choi, S.K.; Choi, Y.; Choudhury, S.; Giri, A.; Cinabro, D.; Cunliffe, S.; Inguglia, G.; Rostomyan, A.; Ye, H.; Di Carlo, S.; Dingfelder, J.; Eidelman, S.; Matvienko, D.; Vorobyev, V.; Garg, R.; Gaur, V.; Piilonen, L.E.; Golob, B.; Krizan, P.; Hayasaka, K.; Kawasaki, T.; Miyata, H.; Ogawa, K.; Seino, Y.; Yusa, Y.; Hirose, S.; Inami, K.; Kato, Y.; Mori, T.; Seon, O.; Iijima, T.; Ishikawa, A.; Sanuki, T.; Watanuki, S.; Iwasaki, M.; Nakano, E.; Iwasaki, Y.; Santelj, L.; Jacobs, W.W.; Jaegle, I.; Yelton, J.; Jeon, H.B.; Kang, K.H.; Lee, S.C.; Park, H.; Joo, K.K.; Kim, D.Y.; Kim, J.B.; Moon, H.K.; Won, E.; Kinoshita, K.; Sandilya, S.; Wang, B.; Kroeger, R.; Kuhr, T.; Kwon, Y.J.; Lange, J.S.; Li, L.K.; Wang, P.; Yin, J.H.; Yuan, C.Z.; Liventsev, D.; Luo, T.; Wang, X.L.; Merola, M.; Mizuk, R.; Mussa, R.; Tamponi, U.; Nayak, M.; Nisar, N.K.; Savinov, V.; Okuno, S.; Ono, H.; Pakhlov, P.; Zhukova, V.; Pakhlova, G.; Popov, V.; Solovieva, E.; Uglov, T.; Pardi, S.; Russo, G.; Paul, S.; Pedlar, T.K.; Prencipe, E.; Salehi, M.; Schneider, O.; Schnell, G.; Schwanda, C.; Senyo, K.; Sevior, M.E.; Tenchini, F.; Waheed, E.; Shibata, T.A.; Uchida, M.; Sumihama, M.; Sumiyoshi, T.; Takizawa, M.; Tanida, K.; Hulse, C. van; Varvell, K.E.; Wang, C.H.; Widmann, E.; Zhang, Z.P.; Belle Collaboration

doi:10.1140/epjc/s10052-018-6425-5

Published November 2018 | Version v1

Journal article Metadata-only

Evidence of a structure in anti K⁰Λ_c⁺ consistent with a charged Ξ_c(2930)⁺, and updated measurement of anti B⁰ → anti K⁰Λ_c⁺ anti Λ_c^- at Belle

1. Peking University, Beijing (China)
2. Beihang University, Beijing (China)
3. High Energy Accelerator Research Organization (KEK), Tsukuba (Japan)
4. SOKENDAI (The Graduate University for Advanced Studies), Hayama (Japan)
5. University of Tokyo, Department of Physics, Tokyo (Japan)
6. University of Tabuk, Department of Physics, Faculty of Science, Tabuk (Saudi Arabia)
7. King Abdulaziz University, Department of Physics, Faculty of Science, Jeddah (Saudi Arabia)
8. Brookhaven National Laboratory, Upton, NY (United States)
9. Moscow Institute of Physics and Technology, Moscow, Moscow Region (Russian Federation)
10. Tata Institute of Fundamental Research, Mumbai (India)
11. King Abdulaziz City for Science and Technology, Riyadh (Saudi Arabia)
12. Indian Institute of Technology Bhubaneswar, Bhubaneswar (India)
13. Pacific Northwest National Laboratory, Richland, WA (United States)
14. Indian Institute of Technology Madras, Chennai (India)
15. Georg-August-Universitaet Goettingen, II. Physikalisches Institut, Goettingen (Germany)
16. Indian Institute of Science Education and Research Mohali, SAS Nagar (India)
17. Indian Institute of Technology Guwahati, Guwahati, Assam (India)
18. J. Stefan Institute, Ljubljana (Slovenia)
19. Novosibirsk State University, Novosibirsk (Russian Federation)
20. Budker Institute of Nuclear Physics SB RAS, Novosibirsk (Russian Federation)
21. H. Niewodniczanski Institute of Nuclear Physics, Krakow (Poland)
22. University of Maribor, Maribor (Slovenia)
23. University of Hawaii, Honolulu, HI (United States)
24. Karlsruher Institut fuer Technologie, Institut fuer Experimentelle Kernphysik, Karlsruhe (Germany)
25. Charles University, Faculty of Mathematics and Physics, Prague (Czech Republic)
26. National Taiwan University, Department of Physics, Taipei (China)
27. Max-Planck-Institut fuer Physik, Munich (Germany)
28. National Central University, Chung-li (CN)
29. Hanyang University, Seoul (KR)
30. P.N. Lebedev Physical Institute, Russian Academy of Sciences, Moscow (RU)
31. Korea Institute of Science and Technology Information, Daejeon (KR)
32. Gyeongsang National University, Chinju (KR)
33. Sungkyunkwan University, Suwon (KR)
34. Indian Institute of Technology Hyderabad, Sangareddy, Telangana (IN)
35. Wayne State University, Detroit, MI (US)
36. Deutsches Elektronen-Synchrotron, Hamburg (DE)
37. LAL, Univ. Paris-Sud, CNRS/IN2P3, Universite Paris-Saclay, Orsay (FR)
38. University of Bonn (DE)
39. Novosibirsk State University, Novosibirsk (RU)
40. P.N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow (RU)
41. Budker Institute of Nuclear Physics SB RAS, Novosibirsk (RU)
42. Panjab University, Chandigarh (IN)
43. Virginia Polytechnic Institute and State University, Blacksburg, VA (US)
44. University of Ljubljana, Faculty of Mathematics and Physics, Ljubljana (SI)
45. J. Stefan Institute, Ljubljana (SI)
46. Niigata University, Niigata (JP)
47. Nagoya University, Graduate School of Science, Nagoya (JP)
48. Nagoya University, Kobayashi-Maskawa Institute, Nagoya (JP)
49. Tohoku University, Department of Physics, Sendai (JP)
50. Osaka City University, Osaka (JP)
51. High Energy Accelerator Research Organization (KEK), Tsukuba (JP)
52. Indiana University, Bloomington, IN (US)
53. University of Florida, Gainesville, FL (US)
54. Kyungpook National University, Daegu (KR)
55. Chonnam National University, Kwangju (KR)
56. Soongsil University, Seoul (KR)
57. Korea University, Seoul (KR)
58. University of Cincinnati, Cincinnati, OH (US)
59. University of Mississippi, University, MS (US)
60. Ludwig Maximilians University, Munich (DE)
61. Yonsei University, Seoul (KR)
62. Justus-Liebig-Universitaet Giessen, Giessen (DE)
63. Chinese Academy of Sciences, Institute of High Energy Physics, Beijing (CN)
64. Fudan University, Key Laboratory of Nuclear Physics and Ion-beam Application (MOE) and Institute of Modern Physics, Shanghai (CN)
65. Universita di Napoli Federico II, Naples (IT)
66. INFN-Sezione di Napoli, Naples (IT)
67. Moscow Institute of Physics and Technology, Moscow (RU)
68. Moscow Physical Engineering Institute, Moscow (RU)
69. INFN-Sezione di Torino, Turin (IT)
70. University of Pittsburgh, Pittsburgh, PA (US)
71. Kanagawa University, Yokohama (JP)
72. Nippon Dental University, Niigata (JP)
73. Moscow Institute of Physics and Technology, Moscow, Moscow Region (RU)
74. Technische Universitaet Muenchen, Department of Physics, Garching (DE)
75. Luther College, Decorah, IA (US)
76. Forschungszentrum Juelich (DE)
77. University of Malaya, Kuala Lumpur (MY)
78. Ecole Polytechnique Federale de Lausanne (EPFL), Lausanne (CH)
79. IKERBASQUE, Basque Foundation for Science, Bilbao (ES)
80. University of the Basque Country UPV/EHU, Bilbao (ES)
81. Institute of High Energy Physics, Vienna (AT)
82. Yamagata University, Yamagata (JP)
83. University of Melbourne, School of Physics, Melbourne, VIC (AU)
84. Tokyo Institute of Technology, Tokyo (JP)
85. Gifu University, Gifu (JP)
86. Tokyo Metropolitan University, Tokyo (JP)
87. Showa Pharmaceutical University, Tokyo (CN)
88. Nishina Center, RIKEN, Theoretical Research Division, Saitama (JP)
89. High Energy Accelerator Research Organization (KEK), J-PARC Branch, KEK Theory Center, Tsukuba (JP)
90. Japan Atomic Energy Agency, Advanced Science Research Center, Naka (JP)
91. University of Sydney, School of Physics, Sydney, NSW (AU)
92. National United University, Miao Li (CN)
93. Stefan Meyer Institute for Subatomic Physics, Vienna (AT)
94. University of Science and Technology of China, Hefei (CN)

We report evidence for the charged charmed-strange baryon Ξ_c(2930)⁺ with a signal significance of 3.9σ with systematic errors included. The charged Ξ_c(2930)⁺ is found in its decay to K_S⁰Λ_c⁺ in the substructure of anti B⁰ → K⁰_SΛ_c⁺ anti Λ_c^- decays. The measured mass and width are [2942.3 ± 4.4(stat.) ± 1.5(syst.)] MeV/c² and [14.8 ± 8.8(stat.) ± 2.5(syst.)] MeV, respectively, and the product branching fraction is B(anti B⁰ → Ξ_c(2930)⁺ anti Λ_c^-) B(Ξ_c(2930)⁺ → anti K⁰Λ_c⁺) = [2.37 ± 0.51(stat.) ± 0.31(syst.)] x 10^-4. We also measure B(anti B⁰ → anti K⁰Λ_c⁺ anti Λ_c^-) = [3.99 ± 0.76(stat.) ± 0.51(syst.)] x 10^-4 with greater precision than previous experiments, and present the results of a search for the charmonium-like state Y(4660) and its spin partner, Y_η, in the Λ_c⁺ anti Λ_c^- invariant mass spectrum. No clear signals of the Y(4660) or Y_η are observed and the 90% credibility level (C.L.) upper limits on their production rates are determined. Thesemeasurements are obtained from a sample of (772 ± 11) x 10⁶ B anti B pairs collected at the Υ(4S) resonance by the Belle detector at the KEKB asymmetric energy electron-positron collider. (orig.)

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Available from: http://dx.doi.org/10.1140/epjc/s10052-018-6425-5

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DOI: 10.1140/epjc/s10052-018-6425-5;

Journal Title: European Physical Journal. C, Particles and Fields (Online)
Journal Volume: 78
Journal Issue: 11
Journal Page Range: p. 1-8
ISSN: 1434-6052

Country of Publication: Germany
Country of Input or Organization: Germany
INIS RN: 50004096
Subject category: S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Resource subtype / Literary indicator: Numerical Data
Descriptors DEI: ANNIHILATION; ANTI-B NEUTRAL MESONS; ANTIBARYONS; ANTIKAONS NEUTRAL; B NEUTRAL MESONS; BRANCHING RATIO; CHARMED BARYONS; CHARMONIUM; DALITZ PLOT; ELECTRON-POSITRON INTERACTIONS; EXPERIMENTAL DATA; GEV RANGE 10-100; HADRONIC PARTICLE DECAY; LAMBDA C PLUS BARYONS; MASS SPECTRA; PAIR PRODUCTION; PARTICLE WIDTHS; REST MASS; UPSILON-10580 MESONS
Descriptors DEC: ANTIKAONS; ANTIMATTER; ANTIMESONS; ANTIPARTICLES; B MESONS; B NEUTRAL MESONS; BARYONS; BEAUTY MESONS; BEAUTY PARTICLES; BOSONS; BOTTOMONIUM; CHARM PARTICLES; CHARMED BARYONS; DATA; DECAY; DIAGRAMS; DIMENSIONLESS NUMBERS; ELEMENTARY PARTICLES; ENERGY RANGE; FERMIONS; GEV RANGE; HADRONS; INFORMATION; INTERACTIONS; KAONS; KAONS NEUTRAL; LEPTON-LEPTON INTERACTIONS; MASS; MATTER; MESONS; NUMERICAL DATA; PARTICLE DECAY; PARTICLE INTERACTIONS; PARTICLE PRODUCTION; PARTICLE PROPERTIES; PSEUDOSCALAR ANTIMESONS; PSEUDOSCALAR MESONS; QUARKONIUM; SCATTERPLOTS; SPECTRA; STRANGE MESONS; STRANGE PARTICLES; VECTOR MESONS

Collaborations: Belle Collaboration

Evidence of a structure in anti K⁰Λ_c⁺ consistent with a charged Ξ_c(2930)⁺, and updated measurement of anti B⁰ → anti K⁰Λ_c⁺ anti Λ_c^- at Belle

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Evidence of a structure in anti K0Λc+ consistent with a charged Ξc(2930)+, and updated measurement of anti B0 → anti K0Λc+ anti Λc- at Belle

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Evidence of a structure in anti K⁰Λ_c⁺ consistent with a charged Ξ_c(2930)⁺, and updated measurement of anti B⁰ → anti K⁰Λ_c⁺ anti Λ_c^- at Belle