The charmless semileptonic branching fraction of B mesons in sample of 89 × 106 BB̄ pairs were collected at υ(4S) resonance. The reconstruction of decay of one B meson and identification of charged lepton from decay of other B meson was also determined. The branching ratio fractions were calculated by number of signal events and were extracted from mass distribution of hadronic system accompanied by lepton. The Cabibbo-Kobayashi-Maskawa matrix element was derived using measured branching fraction for inclusive semileptonic B decays.
|Titolo:||Measurement of the Inclusive Charmless Semileptonic Branching Ratio of B Mesons and Determination of |Vub||
|Settore Scientifico Disciplinare:||Settore FIS/04 - Fisica Nucleare e Subnucleare|
|Data di pubblicazione:||2004|
|Digital Object Identifier (DOI):||10.1103/PhysRevLett.92.071802|
|Appare nelle tipologie:||01 - Articolo su periodico|