Measurement of exclusive Upsilon(1S) and Upsilon(2S) decays into vector-pseudoscalar final states

  • Shen, C. P.
  • Yuan, C. Z.
  • Adachi, I.
  • Aihara, H.
  • Asner, D. M.
  • ... Cheon, B. G.
  • 외 176명
Citations

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7
Citations

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11

초록

Using samples of 102 million Upsilon(1S) and 158 million Upsilon(2S) events collected with the Belle detector, we study exclusive hadronic decays of these two bottomonium resonances to (KSK+)-K-0 pi(-) and charge-conjugate (c.c.) states, pi(+) pi(-) pi(0) pi(0), and pi(+) pi(-) pi(0), and to the two-body Vector-Pseudoscalar (K*(892)0 (K) over bar (0) + c.c., K*(892)K--(+) + c.c., omega pi(0), and rho pi) final states. For the first time, signals are observed in the modes Upsilon(1S) -> K-S(0) K+ pi(-) + c.c., pi(+) pi(-) pi(0) pi(0), and Upsilon(2S) -> pi(+) pi(-) pi(0) pi(0), and evidence is found for the modes Upsilon(1S) -> pi(+) pi(-) pi(0), K-*(892)(0)(K) over bar (0) + c.c., and Upsilon(2S) -> K-S(0) K+ pi(-) + c.c. Branching fractions are measured for all the processes, while 90% confidence level upper limits on the branching fractions are also set for the modes with a statistical significance of less than 3 sigma. The ratios of the branching fractions of Upsilon(2S) and Upsilon(1S) decays into the same final state are used to test a perturbative QCD prediction for Okubo-Zweig-Iizuka- suppressed bottomonium decays.

키워드

IDENTIFICATIONMESON
제목
Measurement of exclusive Upsilon(1S) and Upsilon(2S) decays into vector-pseudoscalar final states
저자
Shen, C. P.Yuan, C. Z.Adachi, I.Aihara, H.Asner, D. M.Aulchenko, V.Bakich, A. M.Bala, A.Bhuyan, B.Bischofberger, M.Bozek, A.Bracko, M.Browder, T. E.Chekelian, V.Chen, A.Chen, P.Cheon, B. G.Chilikin, K.Cho, I. -S.Cho, K.Chobanova, V.Choi, Y.Cinabro, D.Dalseno, J.Danilov, M.Dingfelder, J.Dolezal, Z.Drasal, Z.Drutskoy, A.Dutta, D.Dutta, K.Eidelman, S.Epifanov, D.Farhat, H.Fast, J. E.Ferber, T.Frey, A.Gaur, V.Gabyshev, N.Ganguly, S.Gillard, R.Goh, Y. M.Golob, B.Haba, J.Hara, T.Hayasaka, K.Hayashii, H.Hoshi, Y.Hou, W. -S.Hyun, H. J.Iijima, T.Ishikawa, A.Itoh, R.Iwasaki, Y.Julius, T.Kah, D. H.Kang, J. H.Kato, E.Kawasaki, T.Kiesling, C.Kim, D. Y.Kim, H. J.Kim, J. B.Kim, J. H.Kim, K. T.Kim, Y. J.Kinoshita, K.Klucar, J.Ko, B. R.Kodys, P.Korpar, S.Krizan, P.Krokovny, P.Kumita, T.Kuzmin, A.Kwon, Y. -J.Lee, S. -H.Leitner, R.Li, J.Li, Y.Libby, J.Liu, C.Liu, Y.Liu, Z. Q.Liventsev, D.Lukin, P.Matvienko, D.Miyabayashi, K.Miyata, H.Mohanty, G. B.Moll, A.Mori, T.Muramatsu, N.Mussa, R.Nagasaka, Y.Nakano, E.Nakao, M.Natkaniec, Z.Nayak, M.Nedelkovska, E.Ng, C.Nisar, N. K.Nishida, S.Nitoh, O.Ogawa, S.Okuno, S.Olsen, S. L.Ostrowicz, W.Pakhlov, P.Park, C. W.Park, H.Park, H. K.Pedlar, T. K.Peng, T.Pestotnik, R.Petric, M.Piilonen, L. E.Ritter, M.Roehrken, M.Rostomyan, A.Ryu, S.Sahoo, H.Saito, T.Sakai, Y.Sandilya, S.Santelj, L.Sanuki, T.Sato, Y.Savinov, V.Schneider, O.Schnell, G.Schwanda, C.Senyo, K.Seon, O.Shapkin, M.Shebalin, V.Shibata, T. -A.Shiu, J. -G.Shwartz, B.Sibidanov, A.Simon, F.Smerkol, P.Sohn, Y. -S.Sokolov, A.Solovieva, E.Stanic, S.Staric, M.Steder, M.Sumihama, M.Sumiyoshi, T.Tamponi, U.Tanida, K.Tatishvili, G.Teramoto, Y.Tsuboyama, T.Uchida, M.Uehara, S.Unno, Y.Uno, S.Urquijo, P.Vahsen, S. E.Van Hulse, C.Vanhoefer, P.Varner, G.Vorobyev, V.Wagner, M. N.Wang, C. H.Wang, P.Wang, X. L.Watanabe, M.Watanabe, Y.Won, E.Yamamoto, H.Yamaoka, J.Yamashita, Y.Yashchenko, S.Yook, Y.Yusa, Y.Zhang, C. C.Zhang, Z. P.Zhilich, V.Zupanc, A.
DOI
10.1103/PhysRevD.88.011102
발행일
2013-07
유형
Article
저널명
Physical Review d
88
1
페이지
1 ~ 8

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