Published April 1, 2008 | Version v1
Journal article Metadata-only

Improved measurement of time-dependent CP violation in B0→J/ψπ0 decays

Creators

  • 1. Seoul National University, Seoul (Korea, Republic of)
  • 2. Nara Women's University, Nara (Japan)
  • 3. Department of Physics, University of Tokyo, Tokyo (Japan)
  • 4. Institute for Theoretical and Experimental Physics, Moscow (Russian Federation)
  • 5. Ecole Polytecnique Federale Lausanne, EPFL, Lausanne (Switzerland)
  • 6. Tata Institute of Fundamental Research, Mumbai (India)
  • 7. University of Sydney, Sydney, New South Wales (Australia)

Description

We report improved measurements of time-dependent CP violation parameters for B0(B0)→J/ψπ0 decay. This analysis is based on 535x106 BB pairs accumulated at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. From the distribution of proper time intervals between the two B decays, we obtain the following CP violation parameters SJ/ψπ0=-0.65±0.21(stat)±0.05(syst) and AJ/ψπ0=+0.08±0.16(stat)±0.05(syst),which are consistent with standard model expectations.

Additional details

Identifiers

DOI
10.1103/PhysRevD.77.071101;
arXiv
arXiv:0708.0304v3;

Publishing Information

Journal Title
Physical Review. D, Particles Fields
Journal Volume
77
Journal Issue
7
Journal Page Range
p. 071101-071101.6
ISSN
0556-2821
CODEN
PRVDAQ

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
41001238
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Descriptors DEI
ASYMMETRY; B NEUTRAL MESONS; CP INVARIANCE; DISTRIBUTION; ELECTRON-POSITRON COLLISIONS; ELECTRONS; PARTICLE DECAY; PIONS NEUTRAL; POSITRONS; RESONANCE; STANDARD MODEL; TIME DEPENDENCE
Descriptors DEC
ANTILEPTONS; ANTIMATTER; ANTIPARTICLES; B MESONS; BEAUTY MESONS; BEAUTY PARTICLES; BOSONS; COLLISIONS; DECAY; ELECTRON COLLISIONS; ELEMENTARY PARTICLES; FERMIONS; FIELD THEORIES; GRAND UNIFIED THEORY; HADRONS; INVARIANCE PRINCIPLES; LEPTONS; MATHEMATICAL MODELS; MATTER; MESONS; PARTICLE MODELS; PIONS; POSITRON COLLISIONS; PSEUDOSCALAR MESONS; QUANTUM FIELD THEORY; UNIFIED GAUGE MODELS

Optional Information

Notes
(c) 2008 The American Physical Society
Collaborations
Belle Collaboration