Royal Holloway Centre for Particle Physics
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Fit to moments of inclusive B>Xc |
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| Henning Flaecher et al |
| Abstract: |
| We present a fit to measured moments of inclusive distributions in B-->Xc[script-l][overline nu ] and B-->Xsgamma decays to extract values for the Cabibbo-Kobayashi-Maskawa (CKM) matrix element |Vcb|, the b- and c-quark masses, and higher-order parameters that appear in the heavy quark expansion. The fit is carried out using theoretical calculations in the kinetic scheme and includes moment measurements of the BABAR, Belle, CDF, CLEO, and DELPHI collaborations for which correlation matrices have been published. We find |Vcb|=(41.96±0.23exp±0.35HQE±0.59GammaSL)×10-3 and mb=4.590±0.025exp±0.030HQE GeV where the errors are experimental and theoretical respectively. We also derive values for the heavy quark distribution function parameters mb and µpi2 in different theoretical schemes that can be used as input for the determination of |Vub|. |
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| Available format: |
| Phys. Rev. D 73, 073008 (2006) |
![[script-l]](http://scitation.aip.org/stockgif3/ell.gif){kind=small}
decay distributions using heavy quark expansions in the kinetic scheme