Published May 25, 2007
| Version v1
Journal article
Evidence for D0-D0 Mixing
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. 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
We present evidence for D0-D0 mixing in D0→K+π- decays from 384 fb-1 of e+e- colliding-beam data recorded near √(s)=10.6 GeV with the BABAR detector at the PEP-II storage rings at the Stanford Linear Accelerator Center. We find the mixing parameters x'2=[-0.22±0.30(stat)±0.21(syst)]x10-3 and y'=[9.7±4.4(stat)±3.1(syst)]x10-3 and a correlation between them of -0.95. This result is inconsistent with the no-mixing hypothesis with a significance of 3.9 standard deviations. We measure RD, the ratio of doubly Cabibbo-suppressed to Cabibbo-favored decay rates, to be [0.303±0.016(stat)±0.010(syst)]%. We find no evidence for CP violation
Additional details
Identifiers
- DOI
- 10.1103/PhysRevLett.98.211802;
- arXiv
- arXiv:hep-ex/0703020v1;
Publishing Information
- Journal Title
- Physical Review Letters
- Journal Volume
- 98
- Journal Issue
- 21
- Journal Page Range
- p. 211802-211802.7
- ISSN
- 0031-9007
- CODEN
- PRLTAO
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 38101616
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Descriptors DEI
- COLLIDING BEAMS; CP INVARIANCE; D NEUTRAL MESONS; ELECTRON BEAMS; GEV RANGE 10-100; KAONS PLUS; MIXING; PARTICLE DECAY; PIONS MINUS; POSITRON BEAMS; STANFORD LINEAR ACCELERATOR CENTER; STORAGE RINGS
- Descriptors DEC
- BEAMS; BOSONS; CHARM PARTICLES; CHARMED MESONS; D MESONS; DECAY; ELEMENTARY PARTICLES; ENERGY RANGE; GEV RANGE; HADRONS; INVARIANCE PRINCIPLES; KAONS; LEPTON BEAMS; MESONS; NATIONAL ORGANIZATIONS; PARTICLE BEAMS; PIONS; PSEUDOSCALAR MESONS; STRANGE MESONS; STRANGE PARTICLES; US DOE; US ERDA; US ORGANIZATIONS
Optional Information
- Notes
- (c) 2007 The American Physical Society
- Collaborations
- BABAR Collaboration