Phys. Rev. Lett.
100,
202001
(2008)
[5 pages]
Production of New Charmoniumlike States in e+e-→J/ψD(*)D̅ (*) at √s≈10.6 GeV
P. Pakhlov et al. Belle Collaboration
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P. Pakhlov13, I. Adachi8, H. Aihara43, K. Arinstein1, T. Aushev18,13, T. Aziz40, A. M. Bakich39, V. Balagura13, E. Barberio21, I. Bedny1, K. Belous12, V. Bhardwaj33, U. Bitenc14, A. Bondar1, A. Bozek27, M. Bračko20,14, T. E. Browder7, Y. Chao26, A. Chen24, K.-F. Chen26, W. T. Chen24, B. G. Cheon6, R. Chistov13, Y. Choi38, J. Dalseno21, M. Danilov13, M. Dash47, A. Drutskoy3, S. Eidelman1, B. Golob19,14, H. Ha16, K. Hayasaka22, M. Hazumi8, D. Heffernan32, Y. Hoshi42, W.-S. Hou26, Y. B. Hsiung26, H. J. Hyun17, T. Iijima22, K. Ikado22, K. Inami22, A. Ishikawa35, H. Ishino44, R. Itoh8, M. Iwasaki43, Y. Iwasaki8, D. H. Kah17, J. H. Kang48, P. Kapusta27, N. Katayama8, H. Kawai2, T. Kawasaki29, H. Kichimi8, Y. J. Kim5, K. Kinoshita3, S. Korpar20,14, P. Križan19,14, P. Krokovny8, R. Kumar33, C. C. Kuo24, Y.-J. Kwon48, J. S. Lange4, M. J. Lee37, S. E. Lee37, T. Lesiak27, A. Limosani21, S.-W. Lin26, Y. Liu5, D. Liventsev13, F. Mandl11, A. Matyja27, T. Medvedeva13, H. Miyake32, H. Miyata29, Y. Miyazaki22, R. Mizuk13, G. R. Moloney21, T. Mori22, E. Nakano31, M. Nakao8, Z. Natkaniec27, S. Nishida8, O. Nitoh46, S. Noguchi23, S. Ogawa41, T. Ohshima22, S. Okuno15, S. L. Olsen7,10, H. Ozaki8, G. Pakhlova13, H. Palka27, C. W. Park38, L. S. Peak39, R. Pestotnik14, L. E. Piilonen47, H. Sahoo7, Y. Sakai8, O. Schneider18, R. Seidl9,34, K. Senyo22, M. E. Sevior21, M. Shapkin12, C. P. Shen10, H. Shibuya41, J.-G. Shiu26, J. B. Singh33, A. Somov3, S. Stanič30, M. Starič14, T. Sumiyoshi45, S. Suzuki35, F. Takasaki8, K. Tamai8, N. Tamura29, M. Tanaka8, G. N. Taylor21, Y. Teramoto31, I. Tikhomirov13, S. Uehara8, K. Ueno26, T. Uglov13, Y. Unno6, S. Uno8, P. Urquijo21, Y. Usov1, G. Varner7, K. Vervink18, C. H. Wang25, P. Wang10, X. L. Wang10, Y. Watanabe15, E. Won16, B. D. Yabsley39, Y. Yamashita28, M. Yamauchi8, C. Z. Yuan10, C. C. Zhang10, Z. P. Zhang36, V. Zhilich1, A. Zupanc14, and O. Zyukova1 (Belle Collaboration)
1Budker Institute of Nuclear Physics, Novosibirsk
2Chiba University, Chiba
3University of Cincinnati, Cincinnati, Ohio 45221
4Justus-Liebig-Universität Gießen, Gießen
5The Graduate University for Advanced Studies, Hayama
6Hanyang University, Seoul
7University of Hawaii, Honolulu, Hawaii 96822
8High Energy Accelerator Research Organization (KEK), Tsukuba
9University of Illinois at Urbana-Champaign, Urbana, Illinois 61801
10Institute of High Energy Physics, Chinese Academy of Sciences, Beijing
11Institute of High Energy Physics, Vienna
12Institute of High Energy Physics, Protvino
13Institute for Theoretical and Experimental Physics, Moscow
14J. Stefan Institute, Ljubljana
15Kanagawa University, Yokohama
16Korea University, Seoul
17Kyungpook National University, Taegu
18École Polytechnique Fédérale de Lausanne (EPFL), Lausanne
19University of Ljubljana, Ljubljana
20University of Maribor, Maribor
21University of Melbourne, School of Physics, Victoria 3010
22Nagoya University, Nagoya
23Nara Women’s University, Nara
24National Central University, Chung-li
25National United University, Miao Li
26Department of Physics, National Taiwan University, Taipei
27H. Niewodniczanski Institute of Nuclear Physics, Krakow
28Nippon Dental University, Niigata
29Niigata University, Niigata
30University of Nova Gorica, Nova Gorica
31Osaka City University, Osaka
32Osaka University, Osaka
33Panjab University, Chandigarh
34RIKEN BNL Research Center, Upton, New York 11973
35Saga University, Saga
36University of Science and Technology of China, Hefei
37Seoul National University, Seoul
38Sungkyunkwan University, Suwon
39University of Sydney, Sydney, New South Wales
40Tata Institute of Fundamental Research, Mumbai
41Toho University, Funabashi
42Tohoku Gakuin University, Tagajo
43Department of Physics, University of Tokyo, Tokyo
44Tokyo Institute of Technology, Tokyo
45Tokyo Metropolitan University, Tokyo
46Tokyo University of Agriculture and Technology, Tokyo
47Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061
48Yonsei University, Seoul
Received 5 October 2007; published 19 May 2008
We report a study of the processes e+e-→J/ψD(*)D̅ (*). In J/ψD*D̅ * we observe a significant enhancement in the D*D̅ * invariant mass spectrum, which we interpret as a new charmoniumlike state and denote X(4160). The X(4160) parameters are M=(4156-20+25±15) MeV/c2 and Γ=(139-61+111±21) MeV. We also report a new measurement of the X(3940) mass and width: M=(3942-6+7±6) MeV/c2 and Γ=(37-15+26±8) MeV. The analysis is based on a 693 fb-1 data sample recorded near the Υ(4S) resonance by the Belle detector at the KEKB asymmetric-energy collider.
© 2008 The American Physical Society
URL:
http://link.aps.org/doi/10.1103/PhysRevLett.100.202001
DOI:
10.1103/PhysRevLett.100.202001
PACS:
13.66.Bc, 12.38.Bx, 14.40.Gx
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