CLEO Results: B Decays
摘要
Measurements of many Standard Model constants are clouded by uncertainties in nonperturbative QCD parameters that relate measurable quantities to the underlying parton-level processes. Generally these QCD parameters have been obtained from model calculations with large uncertainties that are difficult to quantify. The CLEO Collaboration has taken a major step towards reducing these uncertainties in determining the CKM matrix elements Vcb and Vub using new measurements of the branching fraction and photon energy spectrum of B -> s gamma decays. This report includes: the new CLEO measurements of B -> s gamma decays, Vcb, and Vub; the first results from CLEO III data -- studies of B -> K pi, pi pi, and K Kbar decays; mention of some other recent CLEO B decay results; and plans for operating CESR and CLEO in the charm threshold region.
引用
@article{arxiv.hep-ex/0111041,
title = {CLEO Results: B Decays},
author = {David G. Cassel},
journal= {arXiv preprint arXiv:hep-ex/0111041},
year = {2010}
}
备注
v1 16 pages, 17 figures, Invited report at the XX Internatioinal Symposium on Lepton and Photon Interactions at High Energies, v2 minor updates to text and Fig. 4, v3 corrected numbers in Table 3