Published February 1, 2003 | Version v1
Journal article Metadata-only

Measurement of the branching fraction for inclusive semileptonic B meson decays

Creators

  • 1. Laboratoire de Physique des Particules, F-74941 Annecy-le-Vieux (France)
  • 2. Universita di Bari, Dipartimento di Fisica and INFN, I-70126 Bari (Italy)
  • 3. Institute of High Energy Physics, Beijing 100039 (China)
  • 4. University of Bergen, Institute of Physics, N-5007 Bergen (Norway)
  • 5. Lawrence Berkeley National Laboratory and University of California, Berkeley, California 94720 (United States)

Description

A largely model-independent measurement of the inclusive electron momentum spectrum and branching fraction for semileptonic decays of B mesons is presented based on data recorded at the Υ(4S) resonance with the BABAR detector. Backgrounds from secondary charm decays are separated from prompt B decays using charge and angular correlations between the electron from one B meson and a high momentum electron tag from the second B meson. The resulting branching fraction is B(B→Xeν)=[10.87±0.18(stat)±0.30(syst)]%. Based on this measurement we determine the Cabibbo-Kobayashi-Maskawa (CKM) matrix element vertical bar Vcb vertical bar

Additional details

Identifiers

DOI
10.1103/PhysRevD.67.031101;
arXiv
arXiv:hep-ex/0208018v1;

Publishing Information

Journal Title
Physical Review. D, Particles Fields
Journal Volume
67
Journal Issue
3
Journal Page Range
p. 031101-031101.8
ISSN
0556-2821
CODEN
PRVDAQ

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
35074848
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Descriptors DEI
ANGULAR CORRELATION; B MESONS; BRANCHING RATIO; CP INVARIANCE; ELECTRONS; INCLUSIVE INTERACTIONS; KOBAYASHI-MASKAWA MATRIX; MULTIPARTICLE SPECTROMETERS; SEMILEPTONIC DECAY; STANDARD MODEL; STANFORD LINEAR COLLIDER
Descriptors DEC
ACCELERATORS; BEAUTY MESONS; BEAUTY PARTICLES; BOSONS; CORRELATIONS; DECAY; ELEMENTARY PARTICLES; FERMIONS; FIELD THEORIES; GRAND UNIFIED THEORY; HADRONS; INTERACTIONS; INVARIANCE PRINCIPLES; LEPTONS; LINEAR ACCELERATORS; LINEAR COLLIDERS; MATHEMATICAL MODELS; MATRICES; MEASURING INSTRUMENTS; MESONS; PARTICLE DECAY; PARTICLE INTERACTIONS; PARTICLE MODELS; PSEUDOSCALAR MESONS; QUANTUM FIELD THEORY; SPECTROMETERS; UNIFIED GAUGE MODELS; WEAK PARTICLE DECAY

Optional Information

Notes
(c) 2003 The American Physical Society
Collaborations
BABAR Collaboration