Open AccessMeasurement of |V(Ub)| Using Inclusing Semileptonic B Meson Decays
Author(s) -
Hojeong Kim
Publication year - 2006
Publication title -
osti oai (u.s. department of energy office of scientific and technical information)
Language(s) - English
Resource type - Reports
DOI - 10.2172/878092
Subject(s) - physics , b meson , semileptonic decay , particle physics , lepton , cabibbo–kobayashi–maskawa matrix , nuclear physics , meson , particle decay , electron , quark
This dissertation presents a measurement of the CKM matrix element |V{sub ub}| made with a sample of 64 million B{bar B} events collected with the BABAR detector. Using Heavy Quark theory, we combine the observed yield of leptons from semileptonic B decay in the electron energy interval 2.1-2.6 GeV with a recent CLEO measurement of the B {yields} X{sub s}{gamma} photon spectrum to find |V{sub ub}| = (4.25 {+-} 0.35 {+-} 0.45 {+-} 0.20) x 10{sup -3}, where the first uncertainty is experimental and the last two are from theory
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