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Observation of a χc2′ candidate in γγ→DD̄ production at belle

  • S. Uehara
  • , K. Abe
  • , I. Adachi
  • , H. Aihara
  • , K. Arinstein
  • , Y. Asano
  • , V. Aulchenko
  • , T. Aushev
  • , A. M. Bakich
  • , V. Balagura
  • , E. Barberio
  • , I. Bedny
  • , K. Belous
  • , U. Bitenc
  • , I. Bizjak
  • , S. Blyth
  • , A. Bondar
  • , A. Bozek
  • , M. Bračko
  • , T. E. Browder
  • M. C. Chang, A. Chen, W. T. Chen, B. G. Cheon, R. Chistov, S. K. Choi, Y. Choi, Y. K. Choi, A. Chuvikov, J. Dalseno, M. Danilov, M. Dash, J. Dragic, S. Eidelman, D. Epifanov, S. Fratina, N. Gabyshev, A. Garmash, T. Gershon, G. Gokhroo, A. Gorišek, H. C. Ha, K. Hayasaka, H. Hayashii, M. Hazumi, L. Hinz, Y. Hoshi, S. Hou, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, N. Katayama, H. Kawai, T. Kawasaki, H. Kichimi, H. J. Kim, S. M. Kim, S. Korpar, P. Krokovny, R. Kulasiri, C. C. Kuo, A. Kuzmin, Y. J. Kwon, J. S. Lange, G. Leder, S. E. Lee, T. Lesiak, J. Li, S. W. Lin, D. Liventsev, F. Mandl, T. Matsumoto, A. Matyja, W. Mitaroff, K. Miyabayashi, H. Miyata, Y. Miyazaki, R. Mizuk, T. Nagamine, Y. Nagasaka, E. Nakano, M. Nakao, H. Nakazawa, S. Nishida, O. Nitoh, S. Ogawa, T. Ohshima, T. Okabe, S. Okuno, S. L. Olsen, P. Pakhlov, C. W. Park, H. Park, R. Pestotnik, L. E. Piilonen, A. Poluektov, Y. Sakai, N. Sato, N. Satoyama, T. Schietinger, O. Schneider, K. Senyo, M. E. Sevior, M. Shapkin, H. Shibuya, B. Shwartz, V. Sidorov, J. B. Singh, A. Sokolov, A. Somov, N. Soni, R. Stamen, S. Stanič, M. Starič, T. Sumiyoshi, F. Takasaki, K. Tamai, N. Tamura, M. Tanaka, G. N. Taylor, X. C. Tian, K. Trabelsi, T. Tsukamoto, T. Uglov, K. Ueno, S. Uno, P. Urquijo, Y. Usov, G. Varner, Y. Watanabe, E. Won, Q. L. Xie, B. D. Yabsley, A. Yamaguchi, M. Yamauchi, J. Ying, C. C. Zhang, J. Zhang, L. M. Zhang, Z. P. Zhang, V. Zhilich
  • High Energy Accelerator Research Organization, Tsukuba
  • Tohoku Gakuin University
  • The University of Tokyo
  • RAS - Budker Institute of Nuclear Physics
  • University of Tsukuba
  • Alikhanov Institute for Theoretical and Experimental Physics
  • The University of Sydney
  • University of Melbourne
  • Institute for High Energy Physics
  • Jožef Stefan Institute
  • National Central University
  • H. Niewodniczanski Institute of Nuclear Physics
  • University of Maribor
  • University of Hawai'i at Mānoa
  • Tohoku University
  • Chonnam National University
  • Gyeongsang National University
  • Sungkyunkwan University
  • Princeton University
  • Virginia Polytechnic Institute and State University
  • Tata Institute of Fundamental Research
  • Korea University
  • Nagoya University
  • Nara Women's University
  • Swiss Federal Institute of Technology Lausanne
  • Chiba University
  • Niigata University
  • University of Cincinnati
  • Yonsei University
  • Goethe University Frankfurt
  • Austrian Academy of Sciences
  • Seoul National University
  • University of Science and Technology of China
  • National Taiwan University
  • Tokyo Metropolitan University
  • Hiroshima Institute of Technology
  • Osaka Metropolitan University
  • Tokyo University of Agriculture and Technology
  • Toho University
  • Kanagawa University
  • Kyungpook National University
  • Shinshu University
  • Panjab University
  • University of Nova Gorica
  • Peking University
  • Tokyo Institute of Technology
  • CAS - Institute of High Energy Physics

Research output: Contribution to journalArticlepeer-review

300 Scopus citations

Abstract

We report on a search for new resonant states in the process γγ→DD̄. A candidate C-even charmonium state is observed in the vicinity of 3.93GeV/c2. The production rate and the angular distribution in the γγ center-of-mass frame suggest that this state is the previously unobserved χc2′, the 2P23 charmonium state.

Original languageEnglish
Article number082003
JournalPhysical Review Letters
Volume96
Issue number8
DOIs
StatePublished - 2006

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