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Search for B-s(0) -> gamma gamma and a measurement of the branching fraction for B-s(0) -> phi gamma
- Authors
- Dutta, D.; Bhuyan, B.; Abdesselam, A.; Adachi, I.; Aihara, H.; Al Said, S.; Arinstein, K.; Asner, D. M.; Aulchenko, V.; Aushev, T.; Ayad, R.; Aziz, T.; Bahinipati, S.; Bakich, A. M.; Bansal, V.; Bhardwaj, V.; Bobrov, A.; Bonvicini, G.; Bracko, M.; Browder, T. E.; Cervenkov, D.; Chen, A.; Cheon, B. G.; Chilikin, K.; Chistov, R.; Cho, K.; Chobanova, V.; Choi, Y.; Cinabro, D.; Dalseno, J.; Dolezal, Z.; Drasal, Z.; Drutskoy, A.; Dutta, K.; Eidelman, S.; Farhat, H.; Fast, J. E.; Frost, O.; Gaur, V.; Ganguly, S.; Garmash, A.; Getzkow, D.; Goh, Y. M.; Golob, B.; Hayashii, H.; He, X. H.; Hou, W. -S.; Iijima, T.; Ishikawa, A.; Iwasaki, Y.; Jaegle, I.; Joffe, D.; Kang, K. H.; Kato, E.; Kiesling, C.; Kim, D. Y.; Kim, J. B.; Kim, J. H.; Kim, K. T.; Kim, M. J.; Kim, S. H.; Kim, Y. J.; Kinoshita, K.; Ko, B. R.; Kodys, P.; Korpar, S.; Krizan, P.; Krokovny, P.; Kuhr, T.; Kuzmin, A.; Kwon, Y. -J.; Lange, J. S.; Lee, I. S.; Lewis, P.; Li, Y.; Gioi, L. Li; Libby, J.; Liventsev, D.; Matvienko, D.; Miyata, H.; Mizuk, R.; Mohanty, G. B.; Moll, A.; Mori, T.; Mussa, R.; Nakano, E.; Nakao, M.; Nanut, T.; Nayak, M.; Nisar, N. K.; Nishida, S.; Ogawa, S.; Okuno, S.; Pakhlov, P.; Pakhlova, G.; Pedlar, T. K.; Pestotnik, R.; Petric, M.; Piilonen, L. E.; Ribezl, E.; Ritter, M.; Rostomyan, A.; Sakai, Y.; Sandilya, S.; Santelj, L.; Sanuki, T.; Sato, Y.; Savinov, V.; Schneider, O.; Schnell, G.; Schwanda, C.; Schwartz, A. J.; Semmler, D.; Shebalin, V.; Shibata, T. -A.; Shiu, J. -G.; Shwartz, B.; Sibidanov, A.; Simon, F.; Sohn, Y. -S.; Sokolov, A.; Solovieva, E.; Staric, M.; Sumihama, M.; Sumiyoshi, T.; Teramoto, Y.; Trabelsi, K.; Uchida, M.; Unno, Y.; Uno, S.; Usov, Y.; Van Hulse, C.; Vanhoefer, P.; Varner, G.; Vinokurova, A.; Vossen, A.; Wagner, M. N.; Wang, C. H.; Wang, P.; Watanabe, Y.; Wehle, S.; Williams, K. M.; Won, E.; Yamamoto, H.; Yamaoka, J.; Yashchenko, S.; Yusa, Y.; Zhang, Z. P.; Zhilich, V.; Zupanc, A.
- Issue Date
- 8-1월-2015
- Publisher
- AMER PHYSICAL SOC
- Citation
- PHYSICAL REVIEW D, v.91, no.1
- Indexed
- SCOPUS
- Journal Title
- PHYSICAL REVIEW D
- Volume
- 91
- Number
- 1
- ISSN
- 2470-0010
- Abstract
- We search for the decay B-s(0) -> gamma gamma and measure the branching fraction for B-s(0) -> phi gamma using 121.4 fb(-1) of data collected at the Upsilon(5S) resonance with the Belle detector at the KEKB asymmetric- energy e(+)e(-) collider. The B-s(0) -> phi gamma branching fraction is measured to be (3.6 +/- 0.5(stat) +/- 0.3(syst) +/- 0.6(f(s))) x 10(-5), where f(s) is the fraction of B-s(()*())(B) over barB(s)(()*()) in b (b) over bar events. Our result is in good agreement with the theoretical predictions as well as with a recent measurement from LHCb. We observe no statistically significant signal for the decay B-s(0) -> gamma gamma and set a 90% confidence- level upper limit on its branching fraction at 3.1 x 10(-6). This constitutes a significant improvement over the previous result.
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