Published May 24, 2002 | Version v1
Journal article

New CLEO results for vertical bar Vcb vertical bar and vertical bar Vub vertical bar

  • 1. Carnegie Mellon University, 5000 Forbes Ave., Pittsburgh, Pennsylvania 15213 (United States)

Description

We report recent measurements from CLEO of the first two moments of the photon energy spectrum for b→sγ decays and the hadronic recoil mass in B-bar→Xclv-bar. These physical quantities allow one to fix non-perturbative parameters occurring in calculations based on HQET and QCD. Predictions for semileptonic decay rates within this same framework depend in addition on the CKM matrix elements Vqq' governing quark mixing. We can thus extract |Vcb| from the inclusive semileptonic decay rate of B mesons, and vertical bar Vub vertical bar from the lepton endpoint spectrum of B-bar→Xulv-bar. Model dependence is reduced except for the assumption of quark-hadron duality. Finally, we update the classic measurement of vertical bar Vcb vertical bar from B-bar→D*lv-bar at zero recoil

Additional details

Identifiers

Publishing Information

Journal Title
AIP Conference Proceedings
Journal Volume
618
Journal Issue
1
Journal Page Range
p. 159-168
ISSN
0094-243X
CODEN
APCPCS

Conference

Title
9. international symposium on heavy flavor physics
Dates
10-13 Sep 2001
Place
Pasadena, CA (United States)

Optional Information

Notes
(c) 2002 American Institute of Physics.
Collaborations
CLEO Collaboration