Observation of a charmoniumlike enhancement in the γγ→ ωJ/ψ Process

  • S. Uehara
  • , T. Aushev
  • , A. M. Bakich
  • , K. Belous
  • , V. Bhardwaj
  • , M. Bischofberger
  • , M. Bračko
  • , T. E. Browder
  • , P. Chang
  • , A. Chen
  • , P. Chen
  • , B. G. Cheon
  • , C. C. Chiang
  • , I. S. Cho
  • , S. K. Choi
  • , Y. Choi
  • , J. Dalseno
  • , A. Drutskoy
  • , S. Eidelman
  • , D. Epifanov
  • M. Feindt, N. Gabyshev, H. Ha, J. Haba, K. Hayasaka, H. Hayashii, Y. Hoshi, W. S. Hou, Y. B. Hsiung, H. J. Hyun, K. Inami, R. Itoh, M. Iwabuchi, M. Iwasaki, Y. Iwasaki, N. J. Joshi, J. H. Kang, T. Kawasaki, C. Kiesling, H. J. Kim, J. H. Kim, Y. I. Kim, Y. J. Kim, B. R. Ko, P. Kodyš, S. Korpar, P. Križan, P. Krokovny, T. Kumita, A. Kuzmin, Y. J. Kwon, S. H. Kyeong, J. S. Lange, M. J. Lee, S. H. Lee, J. Li, C. Liu, Y. Liu, D. Liventsev, R. Louvot, A. Matyja, S. McOnie, K. Miyabayashi, H. Miyata, Y. Miyazaki, R. Mizuk, R. Mussa, E. Nakano, M. Nakao, H. Nakazawa, Z. Natkaniec, S. Nishida, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, P. Pakhlov, G. Pakhlova, C. W. Park, H. Park, H. K. Park, R. Pestotnik, M. Petrič, L. E. Piilonen, M. Röhrken, S. Ryu, H. Sahoo, Y. Sakai, O. Schneider, C. Schwanda, M. E. Sevior, M. Shapkin, C. P. Shen, J. G. Shiu, B. Shwartz, J. B. Singh, P. Smerkol, E. Solovieva, M. Starič, Y. Teramoto, K. Trabelsi, Y. Unno, S. Uno, P. Urquijo, G. Varner, K. Vervink, C. H. Wang, P. Wang, Y. Watanabe, R. Wedd, E. Won, B. D. Yabsley, Y. Yamashita, C. Z. Yuan, C. C. Zhang, T. Zivko, O. Zyukova

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Abstract

We report the results of a search for a charmoniumlike state produced in the process γγ→ωJ/ψ in the 3.9-4.2GeV/c2 mass region. We observe a significant enhancement, which is well described by a resonant shape with mass M=(3915±3±2)MeV/c2 and total width Γ=(17±10±3)MeV. This enhancement may be related to one or more of the three charmoniumlike states so far reported in the 3.90-3.95GeV/c2 mass region.

Original languageEnglish
Article number092001
JournalPhysical Review Letters
Volume104
Issue number9
DOIs
StatePublished - 5 Mar 2010

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