Improving Extractions of |Vcb| and the b Quark Mass from Semileptonic Inclusive B Decay

Details Improving Extractions of |Vcb| and the b Quark Mass from Semileptonic Inclusive B Decay Improving Extractions of |Vcb| and the b Quark Mass from Semileptonic Inclusive B Decay

2004-09-15

arxiv.org/abs/hep-ph/0409186v2

Int.J.Mod.Phys. A19 (2004) 5493-5500

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages, 2 figures. Talk given at MRST2004, May 12-14, Concordia, Montreal

Scientific paper

10.1142/S0217751X04022748

Recent advances in improving extractions of |Vcb| and m_b from spectra of semileptonic inclusive B decay are reported. Results of a general moment analysis of the lepton energy spectrum and the hadronic invariant mass spectrum are summarized. The calculation of the general O(\alpha_s) structure functions for semileptonic B decay is reported, which has allowed the calculation of the O(\alpha_s Lambda_{QCD} /m_b) terms for the hadronic invariant mass moments to be carried out. Recent theoretical advances and improvements in experimental data has allowed extractions of the CKM element |Vcb| to improve to the 2% level.

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