University of Pennsylvania
Department of Physics and Astronomy
High Energy Physics Seminar

Abstract

I will discuss recent measurements of semileptonic B meson decay at CLEO. Two measurements will be highlighted: the measurement of the inclusive branching ratio, and the moments of the lepton energy spectrum. The moments are used, along with measurements of the moments of other B decay spectra, to constrain the values of non-perturbative Heavy Quark Expansion parameters, allowing for a more precise determination of the CKM matrix element |V_cb|.