Search for resonant B± → K± h → K± γ γ decays at Belle

J. Wicht, I. Adachi, H. Aihara, D. Anipko, V. Aulchenko, T. Aushev, A. M. Bakich, E. Barberio, I. Bedny, U. Bitenc, I. Bizjak, A. Bondar, A. Bozek, M. Bračko, J. Brodzicka, T. E. Browder, P. Chang, Y. Chao, A. Chen, W. T. ChenB. G. Cheon, I. S. Cho, Y. Choi, Y. K. Choi, J. Dalseno, M. Dash, S. Eidelman, D. Epifanov, S. Fratina, A. Go, A. Gorišek, H. Ha, T. Hara, K. Hayasaka, M. Hazumi, D. Heffernan, L. Hinz, Y. Hoshi, W. S. Hou, Y. B. Hsiung, H. J. Hyun, K. Ikado, K. Inami, A. Ishikawa, H. Ishino, M. Iwasaki, Y. Iwasaki, C. Jacoby, D. H. Kah, H. Kaji, J. H. Kang, P. Kapusta, H. Kawai, T. Kawasaki, H. Kichimi, H. J. Kim, S. K. Kim, Y. J. Kim, K. Kinoshita, S. Korpar, P. Križan, P. Krokovny, R. Kumar, C. C. Kuo, A. Kuzmin, Y. J. Kwon, J. S. Lee, M. J. Lee, S. E. Lee, T. Lesiak, J. Li, A. Limosani, S. W. Lin, D. Liventsev, G. Majumder, F. Mandl, T. Matsumoto, A. Matyja, S. McOnie, T. Medvedeva, H. Miyake, H. Miyata, Y. Miyazaki, R. Mizuk, D. Mohapatra, G. R. Moloney, E. Nakano, M. Nakao, S. Nishida, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, Y. Onuki, P. Pakhlov, G. Pakhlova, C. W. Park, H. Park, K. S. Park, R. Pestotnik, L. E. Piilonen, F. J. Ronga, Y. Sakai, T. Schietinger, O. Schneider, J. Schümann, K. Senyo, M. E. Sevior, M. Shapkin, C. P. Shen, H. Shibuya, J. B. Singh, A. Somov, S. Stanič, M. Starič, H. Stoeck, T. Sumiyoshi, F. Takasaki, M. Tanaka, G. N. Taylor, Y. Teramoto, X. C. Tian, I. Tikhomirov, T. Tsukamoto, S. Uehara, Y. Unno, S. Uno, P. Urquijo, Y. Ushiroda, Y. Usov, G. Varner, K. E. Varvell, K. Vervink, S. Villa, A. Vinokurova, C. H. Wang, P. Wang, Y. Watanabe, R. Wedd, E. Won, B. D. Yabsley, A. Yamaguchi, Y. Yamashita, Z. P. Zhang, V. Zhilich, A. Zupanc, N. Zwahlen

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5 Citations (Scopus)

Abstract

We report measurements and searches for resonant B± → K± h → K± γ γ decays where h is a η, η, ηc, ηc (2 S), χc 0, χc 2, J / ψ meson or the X (3872) particle. The results are based on a data sample containing 535 million B over(B, ̄) pairs collected with the Belle detector at the KEKB e+ e- asymmetric-energy collider operating at the Υ{hooked} (4 S) resonance. Signals are observed in the modes with η and η, and we obtain evidence for a signal in the mode with ηc. We measure B (B± → K± η → K± γ γ) = (0.87-0.15+0.16 (stat)-0.07+0.10 (syst)) × 10-6, B (B± → K± η → K± γ γ) = (1.40-0.15+0.16 (stat)-0.12+0.15 (syst)) × 10-6 and B (B± → K± ηc → K± γ γ) = (0.22-0.07+0.09 (stat)-0.02+0.04 (syst)) × 10-6. We set upper limits on the branching fractions of the other modes.

Original languageEnglish
Pages (from-to)323-329
Number of pages7
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume662
Issue number4
DOIs
Publication statusPublished - 2008 May 1

Bibliographical note

Funding Information:
We thank the KEKB group for the excellent operation of the accelerator, the KEK cryogenics group for the efficient operation of the solenoid, and the KEK computer group and the National Institute of Informatics for valuable computing and Super-SINET network support. We acknowledge support from the Ministry of Education, Culture, Sports, Science, and Technology of Japan and the Japan Society for the Promotion of Science; the Australian Research Council and the Australian Department of Education, Science and Training; the National Science Foundation of China under contract No. 10575109 and 10775142; the Department of Science and Technology of India; the BK21 program of the Ministry of Education of Korea, the CHEP SRC program and Basic Research program (grant No. R01-2005-000-10089-0) of the Korea Science and Engineering Foundation, and the Pure Basic Research Group program of the Korea Research Foundation; the Polish State Committee for Scientific Research; the Ministry of Education and Science of the Russian Federation and the Russian Federal Agency for Atomic Energy; the Slovenian Research Agency; the Swiss National Science Foundation; the National Science Council and the Ministry of Education of Taiwan; and the US Department of Energy.

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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