Semileptonic B Decays from CLEO

TL;DR

This paper presents recent measurements of semileptonic B meson decays from the CLEO collaboration, including form factors and CKM matrix element determinations, using exclusive and inclusive techniques.

Contribution

It provides new experimental results on B meson semileptonic decays, including form factor measurements and preliminary inclusive analyses for |V_cb| and |V_ub| extraction.

Findings

Measured q^2 dependence of form factors for B -> D* l nu, B -> D l nu, and B -> rho l nu

Determined |V_cb| and |V_ub| from exclusive decay analyses

Preliminary inclusive analyses show potential for precise |V_cb| measurements

Abstract

I report results in semileptonic decays of B mesons from the CLEO collaboration, with a focus on recent results. Results for exclusive reconstruction of B -> D* l nu, B -> D l nu and B -> rho l nu are given including the q^2 dependence of the form factors. These results are used to measure |V_cb| and |V_ub|. Two preliminary analyses using inclusive techniques measure the lepton momentum spectrum and hadronic recoil mass spectrum in B -> X_c l nu decays, showing promise for future precision measurements of |V_cb|.