Published May 1, 2007 | Version v1
Journal article Metadata-only

Measurement of the B±→ρ±π0 branching fraction and direct CP asymmetry

Creators

  • 1. Laboratoire de Physique des Particules, IN2P3/CNRS et Universite de Savoie, F-74941 Annecy-Le-Vieux (France)
  • 2. Universitat de Barcelona, Facultat de Fisica, Departament ECM, E-08028 Barcelona (Spain)
  • 3. Universita di Bari, Dipartimento di Fisica and INFN, I-70126 Bari (Italy)
  • 4. Institute of High Energy Physics, Beijing 100039 (China)
  • 5. University of Bergen, Institute of Physics, N-5007 Bergen (Norway)
  • 6. Lawrence Berkeley National Laboratory and University of California, Berkeley, California 94720 (United States)

Description

We present improved measurements of the branching fraction and CP asymmetry for the process B±→ρ±π0. The data sample corresponding to 211 fb-1 comprises 232x106 Υ(4S)→BB decays collected with the BABAR detector at the PEP-II asymmetric B Factory at SLAC. The yield and CP asymmetry are measured using an extended maximum likelihood fitting method. The branching fraction and CP asymmetry are found to be B(B±→ρ±π0)=[10.2±1.4(stat)±0.9(syst)]x10-6 and ACP(B±→ρ±π0)=-0.01±0.13(stat)±0.02(syst)

Additional details

Identifiers

DOI
10.1103/PhysRevD.75.091103;
arXiv
arXiv:hep-ex/0701035v1;

Publishing Information

Journal Title
Physical Review. D, Particles Fields
Journal Volume
75
Journal Issue
9
Journal Page Range
p. 091103-091103.8
ISSN
0556-2821
CODEN
PRVDAQ

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
39042254
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Descriptors DEI
ASYMMETRY; B MINUS MESONS; B PLUS MESONS; BRANCHING RATIO; CP INVARIANCE; ELECTRON-POSITRON INTERACTIONS; HADRONIC PARTICLE DECAY; MAXIMUM-LIKELIHOOD FIT; MULTIPARTICLE SPECTROMETERS; PARTICLE IDENTIFICATION; PEP STORAGE RINGS; PIONS NEUTRAL; RHO-770 MESONS; STANDARD MODEL; UPSILON-10580 MESONS
Descriptors DEC
B MESONS; BEAUTY MESONS; BEAUTY PARTICLES; BOSONS; BOTTOMONIUM; DECAY; DIMENSIONLESS NUMBERS; ELEMENTARY PARTICLES; FIELD THEORIES; GRAND UNIFIED THEORY; HADRONS; INTERACTIONS; INVARIANCE PRINCIPLES; LEPTON-LEPTON INTERACTIONS; MATHEMATICAL MODELS; MATHEMATICAL SOLUTIONS; MEASURING INSTRUMENTS; MESONS; NUMERICAL SOLUTION; PARTICLE DECAY; PARTICLE INTERACTIONS; PARTICLE MODELS; PIONS; PSEUDOSCALAR MESONS; QUANTUM FIELD THEORY; QUARKONIUM; SPECTROMETERS; STORAGE RINGS; UNIFIED GAUGE MODELS; VECTOR MESONS

Optional Information

Notes
(c) 2007 The American Physical Society
Collaborations
BABAR Collaboration