Phys. Rev. Lett.
89,
102001
(2002)
[5 pages]
Observation of the ηc(2S) in Exclusive B→KKSK-π+ Decays
S.-K. Choi et al. The Belle Collaboration
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S.-K. Choi7, S. L. Olsen8, K. Abe9, K. Abe43, R. Abe30, T. Abe44, I. Adachi9, Byoung Sup Ahn16, H. Aihara45, M. Akatsu23, Y. Asano50, T. Aso49, V. Aulchenko2, T. Aushev13, A. M. Bakich40, Y. Ban34, E. Banas28, A. Bay19, P. K. Behera51, A. Bondar2, A. Bozek28, M. Bračko21,14, J. Brodzicka28, T. E. Browder8, B. C. K. Casey8, P. Chang27, Y. Chao27, B. G. Cheon39, R. Chistov13, Y. Choi39, M. Danilov13, L. Y. Dong11, A. Drutskoy13, S. Eidelman2, V. Eiges13, Y. Enari23, F. Fang8, H. Fujii9, C. Fukunaga47, N. Gabyshev9, A. Garmash2,9, T. Gershon9, A. Gordon22, R. Guo25, F. Handa44, T. Hara32, Y. Harada30, H. Hayashii24, M. Hazumi9, E. M. Heenan22, I. Higuchi44, T. Higuchi45, T. Hojo32, T. Hokuue23, Y. Hoshi43, S. R. Hou27, W.-S. Hou27, H.-C. Huang27, T. Igaki23, Y. Igarashi9, T. Iijima23, K. Inami23, A. Ishikawa23, R. Itoh9, M. Iwamoto3, H. Iwasaki9, Y. Iwasaki9, J. Kaneko46, J. H. Kang54, J. S. Kang16, P. Kapusta28, N. Katayama9, H. Kawai3, Y. Kawakami23, N. Kawamura1, T. Kawasaki30, H. Kichimi9, D. W. Kim39, Heejong Kim54, H. J. Kim54, H. O. Kim39, Hyunwoo Kim16, T. H. Kim54, K. Kinoshita5, P. Križan20,14, P. Krokovny2, R. Kulasiri5, S. Kumar33, A. Kuzmin2, Y.-J. Kwon54, J. S. Lange6,36, G. Leder12, S. H. Lee38, J. Li37, D. Liventsev13, R.-S. Lu27, J. MacNaughton12, G. Majumder41, F. Mandl12, S. Matsumoto4, T. Matsumoto47, H. Miyake32, H. Miyata30, G. R. Moloney22, T. Mori4, T. Nagamine44, Y. Nagasaka10, E. Nakano31, M. Nakao9, J. W. Nam39, Z. Natkaniec28, K. Neichi43, S. Nishida17, O. Nitoh48, T. Nozaki9, S. Ogawa42, F. Ohno46, T. Ohshima23, T. Okabe23, S. Okuno15, W. Ostrowicz28, H. Ozaki9, P. Pakhlov13, H. Palka28, C. W. Park16, H. Park18, L. S. Peak40, J.-P. Perroud19, M. Peters8, L. E. Piilonen52, F. J. Ronga19, N. Root2, M. Rozanska28, K. Rybicki28, H. Sagawa9, S. Saitoh9, Y. Sakai9, M. Satapathy51, A. Satpathy9,5, O. Schneider19, S. Schrenk5, S. Semenov13, K. Senyo23, M. E. Sevior22, H. Shibuya42, B. Shwartz2, V. Sidorov2, J. B. Singh33, S. Stanič50,*, M. Starič14, A. Sugi23, A. Sugiyama23, K. Sumisawa9, T. Sumiyoshi47, S. Suzuki53, S. Y. Suzuki9, T. Takahashi31, F. Takasaki9, K. Tamai9, N. Tamura30, J. Tanaka45, M. Tanaka9, G. N. Taylor22, Y. Teramoto31, S. Tokuda23, T. Tomura45, S. N. Tovey22, T. Tsuboyama9, T. Tsukamoto9, S. Uehara9, K. Ueno27, S. Uno9, Y. Ushiroda9, S. E. Vahsen35, G. Varner8, K. E. Varvell40, C. C. Wang27, C. H. Wang26, J. G. Wang52, M.-Z. Wang27, Y. Watanabe46, E. Won16, B. D. Yabsley52, Y. Yamada9, A. Yamaguchi44, Y. Yamashita29, M. Yamauchi9, H. Yanai30, J. Yashima9, M. Yokoyama45, Y. Yuan11, Y. Yusa44, Z. P. Zhang37, V. Zhilich2, and D. Žontar50 (The Belle Collaboration)
1Aomori University, Aomori
2Budker Institute of Nuclear Physics, Novosibirsk
3Chiba University, Chiba
4Chuo University, Tokyo
5University of Cincinnati, Cincinnati, Ohio 45221
6University of Frankfurt, Frankfurt
7Gyeongsang National University, Chinju
8University of Hawaii, Honolulu, Hawaii 96822
9High Energy Accelerator Research Organization (KEK), Tsukuba
10Hiroshima Institute of Technology, Hiroshima
11Institute of High Energy Physics, Chinese Academy of Sciences, Beijing
12Institute of High Energy Physics, Vienna
13Institute for Theoretical and Experimental Physics, Moscow
14J. Stefan Institute, Ljubljana
15Kanagawa University, Yokohama
16Korea University, Seoul
17Kyoto University, Kyoto
18Kyungpook National University, Taegu
19Institut de Physique des Hautes Énergies, Université de Lausanne, Lausanne
20University of Ljubljana, Ljubljana
21University of Maribor, Maribor
22University of Melbourne, Victoria
23Nagoya University, Nagoya
24Nara Women’s University, Nara
25National Kaohsiung Normal University, Kaohsiung
26National Lien-Ho Institute of Technology, Miao Li
27National Taiwan University, Taipei
28H. Niewodniczanski Institute of Nuclear Physics, Krakow
29Nihon Dental College, Niigata
30Niigata University, Niigata
31Osaka City University, Osaka
32Osaka University, Osaka
33Panjab University, Chandigarh
34Peking University, Beijing
35Princeton University, Princeton, New Jersey 08544
36RIKEN BNL Research Center, Brookhaven, New York 11973
37University of Science and Technology of China, Hefei
38Seoul National University, Seoul
39Sungkyunkwan University, Suwon
40University of Sydney, Sydney NSW
41Tata Institute of Fundamental Research, Bombay
42Toho University, Funabashi
43Tohoku Gakuin University, Tagajo
44Tohoku University, Sendai
45University of Tokyo, Tokyo
46Tokyo Institute of Technology, Tokyo
47Tokyo Metropolitan University, Tokyo
48Tokyo University of Agriculture and Technology, Tokyo
49Toyama National College of Maritime Technology, Toyama
50University of Tsukuba, Tsukuba
51Utkal University, Bhubaneswer
52Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061
53Yokkaichi University, Yokkaichi
54Yonsei University, Seoul
See Also:
Publisher's Note
Received 31 May 2002; published 19 August 2002; publisher error corrected 22 August 2002
We report the observation of a narrow peak in the KSK-π+ invariant mass distribution in a sample of exclusive B→KKSK-π+ decays collected with the Belle detector at the KEKB asymmetric e+e- collider. The measured mass of the peak is M=3654±6(stat)±8(syst) MeV/c2, and we place a 90% confidence level upper limit on the width of Γ<55 MeV/c2. The properties agree with heavy-quark potential model expectations for the ηc(2S) meson, the n=2 singlet S charmonium state.
© 2002 The American Physical Society
URL:
http://link.aps.org/doi/10.1103/PhysRevLett.89.102001
DOI:
10.1103/PhysRevLett.89.102001
PACS:
14.40.Gx, 12.39.Pn, 13.20.He
*On leave from Nova Gorica Polytechnic, Slovenia.
See Also
Publisher's Note:
S.-K. Choi et al. The Belle Collaboration,
Publisher’s Note: Observation of the ηc(2S) in Exclusive B→KKSK-π+ Decays [Phys. Rev. Lett 89, 102001 (2002)],
Phys. Rev. Lett. 89, 129901 (2002).
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