Published March 1988
| Version v1
Journal article
Observation of B0-anti B0 mixing
Description
B0-anti B0 mixing has been observed for the first time. Using the ARGUS detector at the DORIS II storage ring we have studied the decay of the Υ(4S) meson into a pair of B mesons. We found one explicitly mixed event, a decay Υ(4S)→B0B0, which has been completely reconstructed. Furthermore, we observe a 4 standard deviation signal of 24.8 events with like-sign lepton pairs and a 3 standard deviation signal of 4.1 events containing one reconstructed B0(anti B0) and an additional fast l±. This shows that B0-anti B0 oscillations are substantial with a mixing parameter r of r=0.21±0.08. (orig.)
Additional details
Publishing Information
- Journal Title
- Nuclear Physics B, Proceedings Supplements
- Journal Volume
- 1B
- Series
- Nucl. Phys. B, Proc. Suppl.
- Journal Page Range
- 145-158
- ISSN
- 0920-5632
- CODEN
- NPBSE
Conference
- Title
- Topical seminar on heavy flavours.
- Dates
- 22-29 May 1987.
- Place
- San Miniato (Italy).
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- Netherlands
- INIS RN
- 21017262
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Resource subtype / Literary indicator
- Conference, Numerical Data
- Descriptors DEI
- ANNIHILATION; ANTI-B NEUTRAL MESONS; B NEUTRAL MESONS; CONFIGURATION MIXING; ELECTRON-POSITRON INTERACTIONS; EXPERIMENTAL DATA; GEV RANGE 10-100; HADRONIC PARTICLE DECAY; MIXING RATIO; PAIR PRODUCTION; SEMILEPTONIC DECAY; UPSILON-10575 MESONS
- Descriptors DEC
- ANTIMATTER; ANTIPARTICLES; B MESONS; BEAUTY PARTICLES; BOSONS; BOTTOMONIUM; DATA; DECAY; ELEMENTARY PARTICLES; ENERGY RANGE; GEV RANGE; HADRONS; INFORMATION; INTERACTIONS; LEPTON-LEPTON INTERACTIONS; MATTER; MESONS; NUMERICAL DATA; PARTICLE DECAY; PARTICLE INTERACTIONS; PARTICLE PRODUCTION; PSEUDOSCALAR MESONS; QUARKONIUM; VECTOR MESONS; WEAK PARTICLE DECAY
Optional Information
- Contract/Grant/Project number
- Contract BMFT 054DO51P
- Collaborations
- ARGUS Collaboration.