B Meson Decays: Recent Results from CLEO
Stephen P. Pappas (Cleo Collaboration)
TL;DR
This paper reports recent measurements from the CLEO Collaboration that improve the determination of the CKM matrix elements |V_cb| and |V_ub| through various B meson decay analyses, enhancing our understanding of quark flavor transitions.
Contribution
The paper presents new experimental results and refined methods for extracting |V_cb| and |V_ub| from B meson decay data, utilizing improved measurements and theoretical inputs.
Findings
Updated values of |V_cb| and |V_ub| from B decays
Measurement of B -> D* ell nu at zero recoil
Determination of non-perturbative HQET parameters
Abstract
The CLEO Collaboration has extracted improved values of |V_cb| and |V_ub| from measurements of exclusive and inclusive decays of B mesons. The measurement of B -> D* ell nu at zero recoil combined with the predicted form factor F_D*(w_min) yields |V_cb|. The photon energy spectrum in b -> s gamma and the hadronic recoil mass spectrum in B -> X_c ell nu determine non-perturbative HQET parameters used with inclusive b -> c and b -> u rates to obtain |V_cb| and |V_ub|.
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Taxonomy
TopicsParticle physics theoretical and experimental studies · Quantum Chromodynamics and Particle Interactions · High-Energy Particle Collisions Research