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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
8월-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
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/122953
DOI
10.1103/PhysRevD.78.032016
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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