Search for B s 0 → γ γ and a measurement of the branching fraction for B s 0 → φ γ

Journal Article (Journal Article)

We search for the decay Bs0→γγ and measure the branching fraction for Bs0→φγ using 121.4 fb-1 of data collected at the (5S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. The Bs0→φγ branching fraction is measured to be (3.6±0.5(stat)±0.3(syst)±0.6(fs))×10-5, where fs is the fraction of Bs(∗)B¯s(∗) in bb¯ 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 Bs0→γγ and set a 90% confidence-level upper limit on its branching fraction at 3.1×10-6. This constitutes a significant improvement over the previous result.

Full Text

Duke Authors

Cited Authors

  • Dutta, D; Bhuyan, B; Abdesselam, A; Adachi, I; Aihara, H; Al Said, S; Arinstein, K; Asner, DM; Aulchenko, V; Aushev, T; Ayad, R; Aziz, T; Bahinipati, S; Bakich, AM; Bansal, V; Bhardwaj, V; Bobrov, A; Bonvicini, G; Bračko, M; Browder, TE; Červenkov, D; Chen, A; Cheon, BG; Chilikin, K; Chistov, R; Cho, K; Chobanova, V; Choi, Y; Cinabro, D; Dalseno, J; DoleŽal, Z; Drásal, Z; Drutskoy, A; Dutta, K; Eidelman, S; Farhat, H; Fast, JE; Frost, O; Gaur, V; Ganguly, S; Garmash, A; Getzkow, D; Goh, YM; Golob, B; Hayashii, H; He, XH; Hou, WS; Iijima, T; Ishikawa, A; Iwasaki, Y; Jaegle, I; Joffe, D; Kang, KH; Kato, E; Kiesling, C; Kim, DY; Kim, JB; Kim, JH; Kim, KT; Kim, MJ; Kim, SH; Kim, YJ; Kinoshita, K; Ko, BR; Kodyš, P; Korpar, S; KriŽan, P; Krokovny, P; Kuhr, T; Kuzmin, A; Kwon, YJ; Lange, JS; Lee, IS; Lewis, P; Li, Y; Li Gioi, L; Libby, J; Liventsev, D; Matvienko, D; Miyata, H; Mizuk, R; Mohanty, GB; Moll, A; Mori, T; Mussa, R; Nakano, E; Nakao, M; Nanut, T; Nayak, M; Nisar, NK; Nishida, S; Ogawa, S; Okuno, S; Pakhlov, P; Pakhlova, G; Pedlar, TK; Pestotnik, R; Petrič, M; Piilonen, LE; RibeŽl, E

Published Date

  • January 8, 2015

Published In

Volume / Issue

  • 91 / 1

Electronic International Standard Serial Number (EISSN)

  • 1550-2368

International Standard Serial Number (ISSN)

  • 1550-7998

Digital Object Identifier (DOI)

  • 10.1103/PhysRevD.91.011101

Citation Source

  • Scopus