Observation of B_(s)(0)-->phigamma and search for B_(s)(0)-->gammagamma decays at Belle

J Wicht; I Adachi; H Aihara; K Arinstein; V Aulchenko; T Aushev; A M Bakich; V Balagura; A Bay; K Belous; V Bhardwaj; U Bitenc; A Bondar; A Bozek; M Bracko; T E Browder; P Chang; Y Chao; A Chen; K-F Chen; W T Chen; B G Cheon; R Chistov; I-S Cho; Y Choi; J Dalseno; M Dash; A Drutskoy; S Eidelman; N Gabyshev; P Goldenzweig; B Golob; J Haba; K Hayasaka; M Hazumi; D Heffernan; Y Hoshi; W-S Hou; Y B Hsiung; H J Hyun; T Iijima; K Inami; A Ishikawa; H Ishino; R Itoh; Y Iwasaki; D H Kah; H Kaji; J H Kang; P Kapusta; H Kawai; T Kawasaki; H Kichimi; H J Kim; H O Kim; S K Kim; Y J Kim; K Kinoshita; S Korpar; P Krizan; R Kumar; C C Kuo; Y-J Kwon; J S Lange; J Lee; J S Lee; S E Lee; T Lesiak; A Limosani; S-W Lin; Y Liu; D Liventsev; F Mandl; S McOnie; T Medvedeva; W Mitaroff; K Miyabayashi; H Miyake; H Miyata; Y Miyazaki; R Mizuk; D Mohapatra; G R Moloney; M Nakao; Z Natkaniec; S Nishida; O Nitoh; T Nozaki; S Ogawa; T Ohshima; S Okuno; H Ozaki; P Pakhlov; G Pakhlova; H Palka; C W Park; H Park; K S Park; R Pestotnik; L E Piilonen; Y Sakai; O Schneider; J Schümann; A J Schwartz; K Senyo; M E Sevior; M Shapkin; H Shibuya; J-G Shiu; B Shwartz; J B Singh; A Somov; S Stanic; M Staric; K Sumisawa; T Sumiyoshi; F Takasaki; K Tamai; M Tanaka; G N Taylor; Y Teramoto; K Trabelsi; T Tsuboyama; S Uehara; K Ueno; Y Unno; S Uno; Y Ushiroda; Y Usov; G Varner; K Vervink; S Villa; C H Wang; P Wang; X L Wang; Y Watanabe; E Won; B D Yabsley; Y Yamashita; M Yamauchi; Y Yusa; Z P Zhang; V Zhilich; A Zupanc; N Zwahlen; Belle Collaboration

doi:10.1103/PhysRevLett.100.121801

Observation of B_(s)(0)-->phigamma and search for B_(s)(0)-->gammagamma decays at Belle

Phys Rev Lett. 2008 Mar 28;100(12):121801. doi: 10.1103/PhysRevLett.100.121801. Epub 2008 Mar 26.

Authors

J Wicht¹, I Adachi, H Aihara, K Arinstein, V Aulchenko, T Aushev, A M Bakich, V Balagura, A Bay, K Belous, V Bhardwaj, U Bitenc, A Bondar, A Bozek, M Bracko, T E Browder, P Chang, Y Chao, A Chen, K-F Chen, W T Chen, B G Cheon, R Chistov, I-S Cho, Y Choi, J Dalseno, M Dash, A Drutskoy, S Eidelman, N Gabyshev, P Goldenzweig, B Golob, J Haba, K Hayasaka, M Hazumi, D Heffernan, Y Hoshi, W-S Hou, Y B Hsiung, H J Hyun, T Iijima, K Inami, A Ishikawa, H Ishino, R Itoh, Y Iwasaki, D H Kah, H Kaji, J H Kang, P Kapusta, H Kawai, T Kawasaki, H Kichimi, H J Kim, H O Kim, S K Kim, Y J Kim, K Kinoshita, S Korpar, P Krizan, R Kumar, C C Kuo, Y-J Kwon, J S Lange, J Lee, J S Lee, S E Lee, T Lesiak, A Limosani, S-W Lin, Y Liu, D Liventsev, F Mandl, S McOnie, T Medvedeva, W Mitaroff, K Miyabayashi, H Miyake, H Miyata, Y Miyazaki, R Mizuk, D Mohapatra, G R Moloney, M Nakao, Z Natkaniec, S Nishida, O Nitoh, T Nozaki, S Ogawa, T Ohshima, S Okuno, H Ozaki, P Pakhlov, G Pakhlova, H Palka, C W Park, H Park, K S Park, R Pestotnik, L E Piilonen, Y Sakai, O Schneider, J Schümann, A J Schwartz, K Senyo, M E Sevior, M Shapkin, H Shibuya, J-G Shiu, B Shwartz, J B Singh, A Somov, S Stanic, M Staric, K Sumisawa, T Sumiyoshi, F Takasaki, K Tamai, M Tanaka, G N Taylor, Y Teramoto, K Trabelsi, T Tsuboyama, S Uehara, K Ueno, Y Unno, S Uno, Y Ushiroda, Y Usov, G Varner, K Vervink, S Villa, C H Wang, P Wang, X L Wang, Y Watanabe, E Won, B D Yabsley, Y Yamashita, M Yamauchi, Y Yusa, Z P Zhang, V Zhilich, A Zupanc, N Zwahlen; Belle Collaboration

Affiliation

¹ Budker Institute of Nuclear Physics, Novosibirsk.

PMID: 18517854
DOI: 10.1103/PhysRevLett.100.121801

Abstract

We search for the radiative penguin decays B_{s}{0}-->varphigamma and B_{s}{0}-->gammagamma in a 23.6 fb{-1} data sample collected at the Upsilon(5S) resonance with the Belle detector at the KEKB e{+}e{-} asymmetric-energy collider. We observe for the first time a radiative penguin decay of the B_{s}{0} meson in the B_{s}{0}-->varphigamma mode and we measure B(B_{s}{0}-->varphigamma)=(57_{-15}{+18}(stat)-11+12(syst))x10{-6}. No significant B_{s}{0}-->gammagamma signal is observed and we set a 90% confidence level upper limit of B(B_{s}{0}-->gammagamma)<8.7x10{-6}.

Publication types

Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.