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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
Belle Collaboration
2008
发表期刊PHYSICAL REVIEW D
卷号78期号:3
通讯作者Schwanda, C (reprint author), Inst High Energy Phys, Vienna, Austria.
摘要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.
学科领域Astronomy & Astrophysics; Physics
DOI10.1103/PhysRevD.78.032016
收录类别SCI
语种英语
WOS类目Astronomy & Astrophysics ; Physics, Particles & Fields
WOS记录号WOS:000258975300020
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被引频次:23[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/212871
专题实验物理中心
作者单位中国科学院高能物理研究所
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Belle Collaboration. 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[J]. PHYSICAL REVIEW D,2008,78(3).
APA Belle Collaboration.(2008).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.PHYSICAL REVIEW D,78(3).
MLA Belle Collaboration."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".PHYSICAL REVIEW D 78.3(2008).
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