Evidence for B→Kη′γ decays at Belle
Wedd, R.; Adachi, I.; Aihara, H.; Arinstein, K.; Aulchenko, V.; Bakich, A.; Balagura, V.; Barberio, E.; Bay, A.; Belous, K.; Bhardwaj, V.; Bischofberger, M.; Bondar, A.; Bozek, A.; Bračko, M.; Browder, T.; Chao, Y.; Chen, A.; Cheon, B.; 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.; Iijima, T.; Inami, K.; Ishikawa, A.; Itoh, R.; Iwasaki, M.; Kah, D.; Katayama, N.; Kawai, H.; Kawasaki, T.; Kim, H.; Kim, J.; Kim, Y.; Kim, Y.; Kinoshita, K.; Ko, B.; Križan, P.; Krokovny, P.; Kuhr, T.; Kumar, R.; Kuzmin, A.; Kwon, Y.-J.; Kyeong, S.-H.; Lee, M.; 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.; Park, H.; Park, K.; Pestotnik, R.; Piilonen, L.; Poluektov, A.; Sahoo, H.; Sakai, Y.; Schneider, O.; Schümann, J.; Senyo, K.; Sevior, M.; Shapkin, M.; Shebalin, V.; Shiu, J.-G.; Shwartz, B.; Singh, J.; Sokolov, A.; Stanič, S.; Starič, M.; Sumisawa, K.; Sumiyoshi, T.; Suzuki, S.; Taylor, G.; Teramoto, Y.; Trabelsi, K.; Uehara, S.; Unno, Y.; Uno, S.; Urquijo, P.; Usov, Y.; Varner, G.; Varvell, K.; Vervink, K.; Vinokurova, A.; Wang, C.; Wang, M.-Z.; Wang, P.; Watanabe, Y.; Wicht, J.; Won, E.; Yabsley, B.; Yamamoto, H.; Yamashita, Y.; Zhang, Z.; Zhilich, V.; Zhulanov, V.; Zivko, T.; Zupanc, A.; Zyukova, O.; Belle Collaboration
2010
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.
Details
Title
Evidence for B→Kη′γ decays at Belle
Author(s)
Wedd, R. ; Adachi, I. ; Aihara, H. ; Arinstein, K. ; Aulchenko, V. ; Bakich, A. ; Balagura, V. ; Barberio, E. ; Bay, A. ; Belous, K. ; Bhardwaj, V. ; Bischofberger, M. ; Bondar, A. ; Bozek, A. ; Bračko, M. ; Browder, T. ; Chao, Y. ; Chen, A. ; Cheon, B. ; 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. ; Iijima, T. ; Inami, K. ; Ishikawa, A. ; Itoh, R. ; Iwasaki, M. ; Kah, D. ; Katayama, N. ; Kawai, H. ; Kawasaki, T. ; Kim, H. ; Kim, J. ; Kim, Y. ; Kim, Y. ; Kinoshita, K. ; Ko, B. ; Križan, P. ; Krokovny, P. ; Kuhr, T. ; Kumar, R. ; Kuzmin, A. ; Kwon, Y.-J. ; Kyeong, S.-H. ; Lee, M. ; 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. ; Park, H. ; Park, K. ; Pestotnik, R. ; Piilonen, L. ; Poluektov, A. ; Sahoo, H. ; Sakai, Y. ; Schneider, O. ; Schümann, J. ; Senyo, K. ; Sevior, M. ; Shapkin, M. ; Shebalin, V. ; Shiu, J.-G. ; Shwartz, B. ; Singh, J. ; Sokolov, A. ; Stanič, S. ; Starič, M. ; Sumisawa, K. ; Sumiyoshi, T. ; Suzuki, S. ; Taylor, G. ; Teramoto, Y. ; Trabelsi, K. ; Uehara, S. ; Unno, Y. ; Uno, S. ; Urquijo, P. ; Usov, Y. ; Varner, G. ; Varvell, K. ; Vervink, K. ; Vinokurova, A. ; Wang, C. ; Wang, M.-Z. ; Wang, P. ; Watanabe, Y. ; Wicht, J. ; Won, E. ; Yabsley, B. ; Yamamoto, H. ; Yamashita, Y. ; Zhang, Z. ; Zhilich, V. ; Zhulanov, V. ; Zivko, T. ; Zupanc, A. ; Zyukova, O. ; Belle Collaboration
Published in
Physical Review D
Volume
81
Issue
11
Pages
111104(R)
Date
2010
ISSN
1550-2368
Keywords
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Laboratories
LPHE
Record Appears in
Scientific production and competences > SB - School of Basic Sciences > IPHYS - Institute of Physics > LPHE - High Energy Physics Laboratory
Peer-reviewed publications
Work produced at EPFL
Journal Articles
Published
Peer-reviewed publications
Work produced at EPFL
Journal Articles
Published
Record creation date
2010-11-05