New CLEO results for vertical bar Vcb vertical bar and vertical bar Vub vertical bar
Creators
- 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
- DOI
- 10.1063/1.1478833;
- arXiv
- arXiv:hep-ex/0202029v1;
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)
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 35081905
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- B MESONS; DUALITY; ENERGY SPECTRA; INCLUSIVE INTERACTIONS; KOBAYASHI-MASKAWA MATRIX; LEPTONS; MATRIX ELEMENTS; PHOTONS; QUANTUM CHROMODYNAMICS; QUANTUM ELECTRODYNAMICS; QUARKS; RECOILS; SEMILEPTONIC DECAY
- Descriptors DEC
- BEAUTY MESONS; BEAUTY PARTICLES; BOSONS; DECAY; ELECTRODYNAMICS; ELEMENTARY PARTICLES; FERMIONS; FIELD THEORIES; HADRONS; INTERACTIONS; MASSLESS PARTICLES; MATRICES; MESONS; PARTICLE DECAY; PARTICLE INTERACTIONS; PSEUDOSCALAR MESONS; QUANTUM FIELD THEORY; SPECTRA; WEAK PARTICLE DECAY
Optional Information
- Notes
- (c) 2002 American Institute of Physics.
- Collaborations
- CLEO Collaboration