Search for double charmonium decays of the P-wave spin-triplet bottomonium states

C. P. Shen, C. Z. Yuan, T. Iijima, I. Adachi, H. Aihara, K. Arinstein, D. M. Asner, T. Aushev, A. M. Bakich, B. Bhuyan, M. Bischofberger, A. Bozek, M. Bračko, T. E. Browder, M. C. Chang, A. Chen, B. G. Cheon, K. Chilikin, R. Chistov, I. S. ChoK. Cho, S. K. Choi, Y. Choi, J. Dalseno, Z. Drásal, A. Drutskoy, S. Eidelman, J. E. Fast, V. Gaur, N. Gabyshev, A. Garmash, Y. M. Goh, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, Y. Horii, Y. Hoshi, W. S. Hou, H. J. Hyun, A. Ishikawa, R. Itoh, M. Iwabuchi, T. Iwashita, T. Julius, J. H. Kang, T. Kawasaki, H. J. Kim, H. O. Kim, J. B. Kim, K. T. Kim, M. J. Kim, Y. J. Kim, B. R. Ko, S. Koblitz, P. Kody, S. Korpar, P. Krian, P. Krokovny, T. Kumita, Y. J. Kwon, J. S. Lange, S. H. Lee, J. Li, J. Libby, C. L. Lim, C. Liu, Z. Q. Liu, D. Liventsev, R. Louvot, S. McOnie, K. Miyabayashi, H. Miyata, Y. Miyazaki, R. Mizuk, G. B. Mohanty, A. Moll, T. Mori, N. Muramatsu, R. Mussa, E. Nakano, M. Nakao, H. Nakazawa, S. Nishida, K. Nishimura, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, Y. Onuki, G. Pakhlova, C. W. Park, H. K. Park, T. K. Pedlar, M. Petrič, L. E. Piilonen, A. Poluektov, M. Ritter, M. Röhrken, H. Sahoo, Y. Sakai, T. Sanuki, Y. Sato, O. Schneider, C. Schwanda, K. Senyo, O. Seon, M. Shapkin, T. A. Shibata, J. G. Shiu, A. Sibidanov, F. Simon, J. B. Singh, P. Smerkol, Y. S. Sohn, E. Solovieva, S. Stanič, M. Starič, T. Sumiyoshi, G. Tatishvili, Y. Teramoto, T. Tsuboyama, M. Uchida, S. Uehara, Y. Unno, S. Uno, P. Urquijo, G. Varner, K. E. Varvell, C. H. Wang, P. Wang, X. L. Wang, M. Watanabe, Y. Watanabe, Eunil Won, Y. Yamashita, Y. Yusa, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

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Abstract

Using a sample of 158×106 Υ(2S) events collected with the Belle detector, we search for the first time for double-charmonium decays of the P-wave spin-triplet bottomonium states (Υ(2S) →γχ bJ, χ bJ→J/ψJ/ψ, J/ψψ , ψ ψ for J=0, 1, and 2). No significant χ bJ signal is observed in the double-charmonium mass spectra, and we obtain the following upper limits: B(χ bJ→J/ψJ/ψ)<7.1×10 -5, 2.7×10 -5, 4.5×10 -5, B(χ bJ→ J/ψψ )<1.2×10 -4, 1.7×10 -5, 4.9×10 -5, B(χ bJ→ψ ψ )<3. 1×10 -5, 6.2×10 -5, 1.6×10 -5 for J=0, 1, and 2, respectively, at the 90% confidence level. These limits are significantly lower than the central values (with uncertainties of 50% to 70%) predicted using the light cone formalism but are consistent with calculations using the nonrelativistic QCD (NRQCD) factorization approach.

Original languageEnglish
Article number071102
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume85
Issue number7
DOIs
Publication statusPublished - 2012 Apr 18

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ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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