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Evidence for B -> K eta 'gamma decays at Belle
- Authors
- Wedd, R.; Adachi, I.; Aihara, H.; Arinstein, K.; Aulchenko, V.; Bakich, A. M.; Balagura, V.; Barberio, E.; Bay, A.; Belous, K.; Bhardwaj, V.; Bischofberger, M.; Bondar, A.; Bozek, A.; Bracko, M.; Browder, T. E.; Chao, Y.; Chen, A.; Cheon, B. G.; Cho, I. -S.; Choi, Y.; Dalseno, J.; Dash, M.; Drutskoy, A.; Eidelman, S.; Epifanov, D.; Gabyshev, N.; Goldenzweig, P.; Ha, H.; Horii, Y.; Hoshi, Y.; Hou, W. -S.; Hyun, H. J.; Iijima, T.; Inami, K.; Ishikawa, A.; Itoh, R.; Iwasaki, M.; Kah, D. H.; Katayama, N.; Kawai, H.; Kawasaki, T.; Kim, H. O.; Kim, J. H.; Kim, Y. I.; Kim, Y. J.; Kinoshita, K.; Ko, B. R.; Krizan, P.; Krokovny, P.; Kuhr, T.; Kumar, R.; Kuzmin, A.; Kwon, Y. -J.; Kyeong, S. -H.; Lee, M. J.; Lee, S. -H.; Lesiak, T.; Li, J.; Limosani, A.; Liu, C.; Liventsev, D.; Louvot, R.; Matyja, A.; McOnie, S.; Miyata, H.; Mizuk, R.; Mori, T.; Nagasaka, Y.; Nakao, M.; Nakazawa, H.; Natkaniec, Z.; Nishida, S.; Nitoh, O.; Ohshima, T.; Okuno, S.; Ozaki, H.; Pakhlov, P.; Pakhlova, G.; Park, C. W.; Park, H. K.; Park, K. S.; Pestotnik, R.; Piilonen, L. E.; Poluektov, A.; Sahoo, H.; Sakai, Y.; Schneider, O.; Schuemann, J.; Senyo, K.; Sevior, M. E.; Shapkin, M.; Shebalin, V.; Shiu, J. -G.; Shwartz, B.; Singh, J. B.; Sokolov, A.; Stanic, S.; Staric, M.; Sumisawa, K.; Sumiyoshi, T.; Suzuki, S.; Taylor, G. N.; Teramoto, Y.; Trabelsi, K.; Uehara, S.; Unno, Y.; Uno, S.; Urquijo, P.; Usov, Y.; Varner, G.; Varvell, K. E.; Vervink, K.; Vinokurova, A.; Wang, C. H.; Wang, M. -Z.; Wang, P.; Watanabe, Y.; Wicht, J.; Won, E.; Yabsley, B. D.; Yamamoto, H.; Yamashita, Y.; Zhang, Z. P.; Zhilich, V.; Zhulanov, V.; Zivko, T.; Zupanc, A.; Zyukova, O.
- Issue Date
- 28-6월-2010
- Publisher
- AMER PHYSICAL SOC
- Citation
- PHYSICAL REVIEW D, v.81, no.11
- Indexed
- SCIE
SCOPUS
- Journal Title
- PHYSICAL REVIEW D
- Volume
- 81
- Number
- 11
- ISSN
- 1550-7998
- Abstract
- We present the results of a search for the radiative decay B -> K eta 'gamma and find evidence for B+ -> K+eta 'gamma decays at the 3.3 standard deviation level with a partial branching fraction of (3.6 +/- 1.2 +/- 0.4) x 10(-6), where the first error is statistical and the second systematic. This measurement is restricted to the region of combined K eta ' invariant mass less than 3.4 GeV/c(2). A 90% confidence level upper limit of 6.4 x 10(-6) is obtained for the partial branching fraction of the decay B-0 -> K-0 eta 'gamma in the same K eta ' invariant mass region. These results are obtained from a 605 fb(-1) data sample containing 657 x 10(6) B (B) over bar pairs collected at the Y(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider.
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