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

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

Using a sample of 158 x 10(6) Y(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 (Y(2S) -> gamma chi(bJ), chi(bJ) -> J/psi J/psi, J/psi psi', psi'psi' for J 0, 1, and 2). No significant chi(bJ) signal is observed in the double-charmonium mass spectra, and we obtain the following upper limits: B(chi(bJ) -> J/psi J/psi) < 7.1 x 10(-5), 2.7 x 10(-5), 4.5 x 10(-5), B(chi(bJ) -> J/psi psi') < 1.2 x 10(-4), 1. 7 x 10(-5), 4.9 x 10(-5), B(chi(bJ) -> psi'psi') < 3.1 x 10(-5), 6.2 x 10(-5), 1.6 x 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.


Published in:
Physical Review D, 85, 7, 071102
Year:
2012
Keywords:
Laboratories:




 Record created 2012-05-11, last modified 2018-12-03


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