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Search for charmonium and charmoniumlike states in y (1S) radiative decays

  • C. P. Shen
  • , X. L. Wang
  • , C. Z. Yuan
  • , P. Wang
  • , I. Adachi
  • , H. Aihara
  • , T. Aushev
  • , A. M. Bakich
  • , V. Balagura
  • , K. Belous
  • , V. Bhardwaj
  • , M. Bischofberger
  • , M. Bračko
  • , T. E. Browder
  • , M. C. Chang
  • , K. F. Chen
  • , P. Chen
  • , B. G. Cheon
  • , Y. Choi
  • , J. Dalseno
  • M. Danilov, Z. Doleal, S. Eidelman, N. Gabyshev, H. Ha, J. Haba, K. Hayasaka, H. Hayashii, Y. Horii, Y. Hoshi, W. S. Hou, H. J. Hyun, K. Inami, R. Itoh, M. Iwabuchi, Y. Iwasaki, T. Julius, J. H. Kang, H. Kawai, T. Kawasaki, H. Kichimi, C. Kiesling, H. J. Kim, M. J. Kim, Y. J. Kim, B. R. Ko, P. Križlan, T. Kuhr, A. Kuzmin, J. S. Lange, M. J. Lee, S. H. Lee, R. Leitner, J. Li, C. Liu, R. Louvot, S. McOnie, K. Miyabayashi, H. Miyata, Y. Miyazaki, G. B. Mohanty, R. Mussa, E. Nakano, M. Nakao, Z. Natkaniec, S. Nishida, T. Ohshima, S. Okuno, S. L. Olsen, G. Pakhlova, C. W. Park, H. Park, R. Pestotnik, M. Petrič, L. E. Piilonen, M. Röhrken, S. Ryu, Y. Sakai, O. Schneider, C. Schwanda, K. Senyo, M. E. Sevior, L. Shang, M. Shapkin, J. G. Shiu, B. Shwartz, P. Smerkol, E. Solovieva, S. Stanič, M. Starič, Y. Teramoto, T. Uglov, Y. Unno, S. Uno, G. Varner, K. Vervink, C. H. Wang, M. Z. Wang, R. Wedd, E. Won, Y. Yamashita, M. Yamauchi, C. C. Zhang, Z. P. Zhang, P. Zhou, V. Zhulanov, T. Zivko, A. Zupanc, O. Zyukova
  • Budker Institute of Nuclear Physics of the Siberian Branch of the RAS
  • University of Hawai'i at Mānoa
  • CAS - Institute of High Energy Physics
  • High Energy Accelerator Research Organization, Tsukuba
  • The University of Tokyo
  • Alikhanov Institute for Theoretical and Experimental Physics
  • Swiss Federal Institute of Technology Lausanne
  • The University of Sydney
  • Institute for High Energy Physics of National Research Centre ‘Kurchatov Institute’
  • Panjab University
  • Nara Women's University
  • Jožef Stefan Institute
  • University of Maribor
  • Fu Jen Catholic University
  • National Taiwan University
  • Hanyang University
  • Sungkyunkwan University
  • Max Planck Institute for Physics (Werner Heisenberg Institute)
  • Technische Universität München
  • Charles University
  • Novosibirsk State University
  • Korea University
  • Nagoya University
  • Tohoku University
  • Tohoku Gakuin University
  • Kyungpook National University
  • Yonsei University
  • University of Melbourne
  • Chiba University
  • Niigata University
  • The Graduate University for Advanced Studies
  • University of Ljubljana
  • Karlsruhe Institute of Technology
  • Justus Liebig University Giessen
  • Seoul National University
  • University of Science and Technology of China
  • Tata Institute of Fundamental Research
  • National Institute for Nuclear Physics
  • Osaka Metropolitan University
  • Polish Academy of Sciences
  • Kanagawa University
  • Virginia Polytechnic Institute and State University
  • Austrian Academy of Sciences
  • University of Nova Gorica
  • National United University Taiwan
  • Nippon Dental University
  • Wayne State University

Research output: Contribution to journalArticlepeer-review

Abstract

Using a sample of 102×106 Υ(1S) events collected with the Belle detector, we report on the first search for charge-parity-even charmonium and charmoniumlike states in Υ(1S) radiative decays. No significant χcJ or ηc signal is observed and 90% C.L. limits on B(Υ(1S)→γχc0)<6.5×10⊃-4, B(Υ(1S)→γχc1)<2.3×10⊃-5, B(Υ(1S)→γχc2)<7.6×10⊃-6, and B(Υ(1S)→γηc)<5.7×10⊃-5 are obtained. The product branching fraction limits B(Υ(1S)→γX(3872)) B(X(3872)→π⊃+π⊃-J/ψ)<1.6×10⊃-6, B(Υ(1S)→γX(3872))B(X(3872)→π⊃+π⊃-π0J/ ψ)<2.8×10⊃-6, B(Υ(1S)→γX(3915))B(X(3915) →ωJ/ψ)<3.0×10⊃-6, and B(Υ(1S) →γY(4140))B(Y(4140)→J/ψ)<2.2×10⊃-6 are obtained at the 90% C.L. Furthermore, no evidence is found for excited charmonium states below 4.8GeV/c2.

Original languageEnglish
Article number051504
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume82
Issue number5
DOIs
StatePublished - 22 Sep 2010
Externally publishedYes

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