Global analysis of inclusive B decays
- California Institute of Technology, Pasadena, California 91125 (United States)
- Ernest Orlando Lawrence Berkeley National Laboratory, University of California, Berkeley, California 94720 (United States)
- Department of Physics, University of Toronto, 60 St. George Street, Toronto, Ontario, M5S 1A7 (Canada)
- Department of Physics, University of California at San Diego, La Jolla, California 92093 (United States)
In light of the large amount of new experimental data, we revisit the determination of vertical bar V{sub cb} vertical bar and m{sub b} from inclusive semileptonic and radiative B decays. We study shape variables to order {lambda}{sub QCD}{sup 3}/m{sub b}{sup 3} and {alpha}{sub s}{sup 2}{beta}{sub 0}, and include the order {alpha}{sub s}{lambda}{sub QCD}/m{sub b} correction to the hadron mass spectrum in semileptonic decay, which improves the agreement with the data. We focus on the 1S and kinetic mass schemes for the b quark, with and without expanding m{sub b}-m{sub c} in heavy quark effective theory. We perform fits to all available data from BABAR, BELLE, CDF, CLEO, and DELPHI, discuss the theoretical uncertainties, and compare with earlier results. We find vertical bar V{sub cb} vertical bar=(41.4{+-}0.6{+-}0.1{sub {tau}{sub B}})x10{sup -3} and m{sub b}{sup 1S}=4.68{+-}0.03 GeV, including our estimate of the theoretical uncertainty in the fit.
- OSTI ID:
- 20705611
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 70, Issue 9; Other Information: DOI: 10.1103/PhysRevD.70.094017; (c) 2004 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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