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Measurement of the moments of the photon energy spectrum in B -> X-s gamma decays and determination of |V-cb| and m(b) at Belle
- Authors
- Schwanda, C.; Urquijo, P.; Barberio, E.; Limosani, A.; Adachi, I.; Aihara, H.; Arinstein, K.; Aushev, T.; Bahinipati, S.; Bakich, A. M.; Balagura, V.; Bedny, I.; Belous, K.; Bitenc, U.; Bondar, A.; Bozek, A.; Brancko, M.; Chang, M. -C.; Chen, A.; Chen, W. T.; Cheon, B. G.; Chistov, R.; Cho, I. -S.; Choi, Y.; Dalseno, J.; Dash, M.; Drutskoy, A.; Eidelman, S.; Golob, B.; Ha, H.; Haba, J.; Hara, T.; Hayasaka, K.; Hayashii, H.; Hazumi, M.; Heffernan, D.; Hoshi, Y.; Hou, W. -S.; Hyun, H. J.; Inami, K.; Ishikawa, A.; Ishino, H.; Itoh, R.; Iwasaki, M.; Iwasaki, Y.; Kah, D. H.; Kang, J. H.; Kapusta, P.; Katayama, N.; Kichimi, H.; Kim, H. J.; Kim, Y. J.; Kinoshita, K.; Korpar, S.; Kozakai, Y.; Krizan, P.; Krokovny, P.; Kumar, R.; Kuo, C. C.; Kuroki, Y.; Kuzmin, A.; Kwon, Y. -J.; Lee, J. S.; Lee, M. J.; Lee, S. E.; Lesiak, T.; Li, J.; Liu, C.; Liventsev, D.; Mandl, F.; Matyja, A.; McOnie, S.; Medvedeva, T.; Mitaroff, W.; Miyake, H.; Miyata, H.; Miyazaki, Y.; Mizuk, R.; Moloney, G. R.; Nakano, E.; Nakao, M.; Natkaniec, Z.; Nishida, S.; Nitoh, O.; Noguchi, S.; Nozaki, T.; Ogawa, S.; Ohshima, T.; Okuno, S.; Pakhlov, P.; Pakhlova, G.; Palka, H.; Park, C. W.; Park, H.; Peak, L. S.; Pestotnik, R.; Piilonen, L. E.; Sahoo, H.; Sakai, Y.; Schneider, O.; Schuemann, J.; Seidl, R.; Sekiya, A.; Senyo, K.; Sevior, M. E.; Shapkin, M.; Shibuya, H.; Shiu, J. -G.; Shwartz, B.; Somov, A.; Stanic, S.; Staric, M.; Sumiyoshi, T.; Takasaki, F.; Tanaka, M.; Taylor, G. N.; Teramoto, Y.; Tikhomirov, I.; Trabelsi, K.; Uehara, S.; Unno, Y.; Uno, S.; Varner, G.; Varvell, K. E.; Vervink, K.; Villa, S.; Wang, C. H.; Wang, P.; Watanabe, Y.; Wedd, R.; Won, E.; Yabsley, B. D.; Yamamoto, H.; Yamashita, Y.; Zhang, Z. P.; Zupanc, A.
- Issue Date
- Aug-2008
- Publisher
- AMER PHYSICAL SOC
- Citation
- PHYSICAL REVIEW D, v.78, no.3
- Indexed
- SCIE
SCOPUS
- Journal Title
- PHYSICAL REVIEW D
- Volume
- 78
- Number
- 3
- ISSN
- 1550-7998
- Abstract
- Using the previous Belle measurement of the inclusive photon energy in B -> X-s gamma decays, we determine the first and second moments of this spectrum for minimum photon energies in the B meson rest frame ranging from 1.8 to 2.3 GeV. Combining these measurements with recent Belle data on the lepton energy and hadronic mass moments in B -> X-c center dot nu decays, we perform fits to theoretical expressions derived in the 1S and kinetic mass schemes and extract the magnitude of the Cabibbo-Kobayashi-Maskawa matrix element V-cb, the b-quark mass, and other nonperturbative parameters. In the 1S scheme analysis we find |V-cb|=(41.56 +/- 0.68(fit)+/- 0.08(tau(B)))x10(-3) and m(b)(1S)=(4.723 +/- 0.055) GeV. In the kinetic scheme, we obtain |V-cb|=(41.58 +/- 0.69(fit)+/- 0.08(tau(B))+/- 0.58(th))x10(-3) and m(b)(kin)=(4.543 +/- 0.075) GeV.
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Related Researcher
- Won, Eun il
- College of Science (Department of Physics)