Measurement of inclusive radiative B-meson decays with a photon energy threshold of 1.7 GeV
Limosani, A.; Aihara, H.; Arinstein, K.; Aushev, T.; Bakich, A.M.; Balagura, V.; Barberio, E.; Bay, A.; Belous, K.; Bischofberger, M.; Bondar, A.; Bozek, A.; Bračko, M.; Browder, T.E.; Chang, P.; Chao, Y.; Chen, A.; Cheon, B.G.; Choi, Y.; Dalseno, J.; Danilov, M.; Drutskoy, A.; Dungel, W.; Eidelman, S.; Goldenzweig, P.; Golob, B.; Ha, H.; Hayashii, H.; Hoshi, Y.; Hou, W.-S.; Hyun, H.J.; Inami, K.; Itoh, R.; Iwasaki, Y.; Julius, T.; Kah, D.H.; Kim, H.O.; Kim, S.K.; Kim, Y.I.; Kim, Y.J.; Kinoshita, K.; Ko, B.R.; Korpar, S.; Kreps, M.; Križan, P.; Krokovny, P.; Kuhr, T.; Kumar, R.; Kwon, Y.-J.; Kyeong, S.-H.; Lesiak, T.; Li, J.; Liu, C.; Liventsev, D.; Louvot, R.; Matyja, A.; Miyabayashi, K.; Miyata, H.; Miyazaki, Y.; Mizuk, R.; Mori, T.; Nakao, M.; Nakazawa, H.; Nishida, S.; Nishimura, K.; Nitoh, O.; Nozaki, T.; Ogawa, S.; Ohshima, T.; Okuno, S.; Ozaki, H.; Pakhlova, G.; Park, C.W.; Park, H.; Piilonen, L.E.; Rozanska, M.; Sahoo, H.; Sakai, Y.; Schneider, O.; Schümann, J.; Schwanda, C.; Schwartz, A.J.; Senyo, K.; Sevior, M.E.; Shapkin, M.; Shebalin, V.; Shen, C.P.; Shiu, J.-G.; Singh, J.B.; Stanič, S.; Starič, M.; Sumisawa, K.; Sumiyoshi, T.; Suzuki, S.; Taylor, G.N.; Teramoto, Y.; Trabelsi, K.; Tsuboyama, T.; Uehara, S.; Unno, Y.; Uno, S.; Urquijo, P.; Ushiroda, Y.; Varner, G.; Varvell, K.E.; Vervink, K.; Wang, C.H.; Wang, M.-Z.; Wang, P.; Watanabe, Y.; Wedd, R.; Wicht, J.; Won, E.; Yabsley, B.D.; Yamamoto, H.; Yamashita, Y.; Zhang, Z.P.; Zivko, T.; Zupanc, A.
2009
Abstract
Using 605fb-1 of data collected at the Υ(4S) resonance we present a measurement of the inclusive radiative B-meson decay channel, B→Xsγ. For the lower photon energy thresholds of 1.7, 1.8, 1.9, and 2.0 GeV, as defined in the rest frame of the B meson, we measure the partial branching fraction and the mean and variance of the photon energy spectrum. At the 1.7 GeV threshold we obtain the partial branching fraction BF(B→Xsγ)=(3.45±0. 15±0.40)×10-4, where the errors are statistical and systematic. © 2009 The American Physical Society.
Details
Title
Measurement of inclusive radiative B-meson decays with a photon energy threshold of 1.7 GeV
Author(s)
Limosani, A. ; Aihara, H. ; Arinstein, K. ; Aushev, T. ; Bakich, A.M. ; Balagura, V. ; Barberio, E. ; Bay, A. ; Belous, K. ; Bischofberger, M. ; Bondar, A. ; Bozek, A. ; Bračko, M. ; Browder, T.E. ; Chang, P. ; Chao, Y. ; Chen, A. ; Cheon, B.G. ; Choi, Y. ; Dalseno, J. ; Danilov, M. ; Drutskoy, A. ; Dungel, W. ; Eidelman, S. ; Goldenzweig, P. ; Golob, B. ; Ha, H. ; Hayashii, H. ; Hoshi, Y. ; Hou, W.-S. ; Hyun, H.J. ; Inami, K. ; Itoh, R. ; Iwasaki, Y. ; Julius, T. ; Kah, D.H. ; Kim, H.O. ; Kim, S.K. ; Kim, Y.I. ; Kim, Y.J. ; Kinoshita, K. ; Ko, B.R. ; Korpar, S. ; Kreps, M. ; Križan, P. ; Krokovny, P. ; Kuhr, T. ; Kumar, R. ; Kwon, Y.-J. ; Kyeong, S.-H. ; Lesiak, T. ; Li, J. ; Liu, C. ; Liventsev, D. ; Louvot, R. ; Matyja, A. ; Miyabayashi, K. ; Miyata, H. ; Miyazaki, Y. ; Mizuk, R. ; Mori, T. ; Nakao, M. ; Nakazawa, H. ; Nishida, S. ; Nishimura, K. ; Nitoh, O. ; Nozaki, T. ; Ogawa, S. ; Ohshima, T. ; Okuno, S. ; Ozaki, H. ; Pakhlova, G. ; Park, C.W. ; Park, H. ; Piilonen, L.E. ; Rozanska, M. ; Sahoo, H. ; Sakai, Y. ; Schneider, O. ; Schümann, J. ; Schwanda, C. ; Schwartz, A.J. ; Senyo, K. ; Sevior, M.E. ; Shapkin, M. ; Shebalin, V. ; Shen, C.P. ; Shiu, J.-G. ; Singh, J.B. ; Stanič, S. ; Starič, M. ; Sumisawa, K. ; Sumiyoshi, T. ; Suzuki, S. ; Taylor, G.N. ; Teramoto, Y. ; Trabelsi, K. ; Tsuboyama, T. ; Uehara, S. ; Unno, Y. ; Uno, S. ; Urquijo, P. ; Ushiroda, Y. ; Varner, G. ; Varvell, K.E. ; Vervink, K. ; Wang, C.H. ; Wang, M.-Z. ; Wang, P. ; Watanabe, Y. ; Wedd, R. ; Wicht, J. ; Won, E. ; Yabsley, B.D. ; Yamamoto, H. ; Yamashita, Y. ; Zhang, Z.P. ; Zivko, T. ; Zupanc, A.
Published in
Physical Review Letters
Volume
103
Issue
24
Pages
241801
Date
2009
Keywords
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Laboratories
LPHE
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Scientific production and competences > SB - School of Basic Sciences > IPHYS - Institute of Physics > LPHE - High Energy Physics Laboratory
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Record creation date
2010-11-05