Published February 19, 1990
| Version v1
Journal article
Branching ratio and asymmetry for Ξ0→Λγ
Creators
- 1. School of Astronomy, University of Minnesota, Minneapolis, Minnesota 55455 (USA)
- 2. School of Physics
- 3. Physics Department, University of Michigan, Ann Arbor, Michigan 48109 (USA)
- 4. Physics Department, University of Wisconsin, Madison, Wisconsin 53706 (USA)
- 5. Department of Astronomy, Rutgers-The State University of New Jersey, Piscataway, New Jersey 08855-0849 (USA)
- 6. Department of Physics
Description
We have measured the branching ratio Γ(Ξ0→Λγ)/Γ(Ξ0→Λπ0) to be [1.06±0.12(stat)±0.11(syst)]x10-3. In 670 000 Λγ candidates we found 116±13 Ξ0→Λγ decays (background subtracted). These compare with 29 510 Ξ0→Λπ0 events reconstructed from the Λγγ sample. Monte Carlo studies gave the relative acceptances for the two processes. The helicity of the Λ yielded the product of asymmetry parameters α(Λ→pπ-)α(Ξ0→Λγ)=0.27±0.28, which implies α(Ξ0→Λγ)=0.43±0.44, where the uncertainty is all statistical
Additional details
Publishing Information
- Journal Title
- Physical Review Letters
- Journal Volume
- 64
- Journal Issue
- 8
- Series
- Phys. Rev. Lett.
- Journal Page Range
- 843-846
- ISSN
- 0031-9007
- CODEN
- PRLTA
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 21056524
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Descriptors DEI
- ANGULAR DISTRIBUTION; ASYMMETRY; BRANCHING RATIO; DATA PROCESSING; GEV RANGE 100-1000; HADRONIC PARTICLE DECAY; LAMBDA-1405 BARYONS; MASS SPECTRA; MEASURING METHODS; MONTE CARLO METHOD; PHOTONS; PIONS NEUTRAL; PROTON-NUCLEON INTERACTIONS; RADIATIVE DECAY; XI NEUTRAL PARTICLES
- Descriptors DEC
- BARYON-BARYON INTERACTIONS; BARYONS; BOSONS; DECAY; DISTRIBUTION; ELEMENTARY PARTICLES; ENERGY RANGE; FERMIONS; GEV RANGE; HADRON-HADRON INTERACTIONS; HADRONS; HYPERONS; INTERACTIONS; LAMBDA BARYONS; MASSLESS PARTICLES; MESONS; NUCLEON-NUCLEON INTERACTIONS; PARTICLE DECAY; PARTICLE INTERACTIONS; PIONS; PSEUDOSCALAR MESONS; SPECTRA; STRANGE PARTICLES; XI BARYONS; XI PARTICLES