Published December 2, 2005
| Version v1
Journal article
Measurement of the Wrong-Sign Decays D0→K+π-π0 and D0→K+π-π+π-, and Search for CP Violation
Creators
- 1. Peking University, Beijing (China)
- 2. High Energy Accelerator Research Organization (KEK), Tsukuba (Japan)
Description
Using 281 fb-1 of data from the Belle experiment recorded at or near the Υ(4S) resonance, we have measured the rates of the ''wrong-sign'' decays D0→K+π-π0 and D0→K+π-π+π- relative to those of the Cabibbo-favored decays D0→K-π+π0 and D0→K-π+π+π-. These wrong-sign decays proceed via a doubly Cabibbo-suppressed amplitude or via D0-D0 mixing; the latter has not yet been observed. We obtain RWS(Kππ0)=[0.229±0.015(stat)-0.009+0.013(syst)]% and RWS(K3π)=[0.320±0.018(stat)-0.013+0.018(syst)]%. The CP asymmetries are measured to be -0.006±0.053 and -0.018±0.044 for the K+π-π0 and K+π-π+π- final states, respectively
Additional details
Identifiers
- DOI
- 10.1103/PhysRevLett.95.231801;
- arXiv
- arXiv:hep-ex/0507071v2;
Publishing Information
- Journal Title
- Physical Review Letters
- Journal Volume
- 95
- Journal Issue
- 23
- Journal Page Range
- p. 231801-231801.5
- ISSN
- 0031-9007
- CODEN
- PRLTAO
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 37015642
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Descriptors DEI
- ASYMMETRY; CABIBBO ANGLE; CP INVARIANCE; D NEUTRAL MESONS; HADRONIC PARTICLE DECAY; KAONS PLUS; PIONS MINUS; PIONS NEUTRAL; PIONS PLUS
- Descriptors DEC
- BOSONS; CHARM PARTICLES; CHARMED MESONS; D MESONS; DECAY; ELEMENTARY PARTICLES; HADRONS; INVARIANCE PRINCIPLES; KAONS; MESONS; PARTICLE DECAY; PIONS; PSEUDOSCALAR MESONS; STRANGE MESONS; STRANGE PARTICLES
Optional Information
- Notes
- (c) 2005 The American Physical Society
- Collaborations
- Belle Collaboration