Published May 1994
| Version v1
Journal article
Precise measurements of e+e- annihilation at rest into four photons and the search for exotic particles
- 1. Department of Physics, Tokyo Metropolitan University, 1-1 Minami Ohsawa, Hachioji-shi, Tokyo 192-03 (Japan)
Description
We measured the branching ratio R of e+e-→4γ with respect to e+e-→2γ as [1.48±0.13(statistical)±0.12(systemic)]x10-6. The upper limits of the branching ratios for the exotic particles are obtained to be around 3x10-7
Additional details
Publishing Information
- Journal Title
- Physical Review. A
- Journal Volume
- 49
- Journal Issue
- 5
- Journal Page Range
- p. 3201-3208.
- ISSN
- 1050-2947
- CODEN
- PLRAAN
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 25060600
- Subject category
- S74: ATOMIC AND MOLECULAR PHYSICS;
- Descriptors DEI
- ACCURACY; EXOTIC RESONANCES; GAMMA RADIATION; HADRONIC ATOMS; KINETICS; MULTI-PHOTON PROCESSES; PHOTONS; POSITRONIUM; RADIATIVE DECAY
- Descriptors DEC
- ATOMS; BOSONS; DECAY; ELECTROMAGNETIC RADIATION; ELEMENTARY PARTICLES; HADRONS; IONIZING RADIATIONS; MASSLESS PARTICLES; PARTICLE DECAY; RADIATIONS; RESONANCE PARTICLES