Published May 4, 2007
| Version v1
Journal article
Measurements of CP-Violating Asymmetries in B0→a1±(1260)π± Decays
Creators
- 1. Laboratoire de Physique des Particules, IN2P3/CNRS et Universite de Savoie, F-74941 Annecy-Le-Vieux (France)
- 2. Facultat de Fisica, Departament ECM, Universitat de Barcelona, E-08028 Barcelona (Spain)
- 3. Dipartimento di Fisica and INFN, Universita di Bari, I-70126 Bari (Italy)
- 4. Institute of High Energy Physics, Beijing 100039 (China)
- 5. Institute of Physics, University of Bergen, N-5007 Bergen (Norway)
- 6. Lawrence Berkeley National Laboratory and University of California, Berkeley, California 94720 (United States)
Description
We present measurements of CP-violating asymmetries in the decay B0→a1±(1260)π± with a1±(1260)→π±π±π±. The data sample corresponds to 384x106 BB pairs collected with the BABAR detector at the PEP-II asymmetric B factory at SLAC. We measure the CP-violating asymmetry ACPa1π=-0.07±0.07±0.02, the mixing-induced CP violation parameter Sa1π=0.37±0.21±0.07, the direct CP violation parameter Ca1π=-0.10±0.15±0.09, and the parameters ΔCa1π=0.26±0.15±0.07 and ΔSa1π=-0.14±0.21±0.06. From these measured quantities we determine the angle αeff=78.6 deg. ±7.3 deg
Additional details
Identifiers
- DOI
- 10.1103/PhysRevLett.98.181803;
- arXiv
- arXiv:hep-ex/0612050v2;
Publishing Information
- Journal Title
- Physical Review Letters
- Journal Volume
- 98
- Journal Issue
- 18
- Journal Page Range
- p. 181803-181803.7
- ISSN
- 0031-9007
- CODEN
- PRLTAO
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 38101556
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Descriptors DEI
- A1-1260 MESONS; ASYMMETRY; B NEUTRAL MESONS; CP INVARIANCE; PARTICLE DECAY; PARTICLE PRODUCTION; STANFORD LINEAR ACCELERATOR CENTER
- Descriptors DEC
- AXIAL VECTOR MESONS; B MESONS; BEAUTY MESONS; BEAUTY PARTICLES; BOSONS; DECAY; ELEMENTARY PARTICLES; HADRONS; INVARIANCE PRINCIPLES; MESONS; NATIONAL ORGANIZATIONS; PSEUDOSCALAR MESONS; US DOE; US ERDA; US ORGANIZATIONS
Optional Information
- Notes
- (c) 2007 The American Physical Society
- Collaborations
- BABAR Collaboration