Search for very weakly interacting, short-lived, {ital C}-odd bosons and the orthopositronium decay rate problem
- H.M. Randall Laboratory of Physics, University of Michigan, Ann Arbor, Michigan 48109 (United States)
The discrepancy between theory and experiment for the orthopositronium (o-Ps) decay rate could be resolved by an exotic decay branch o-Ps{r_arrow}X{sup 0}{gamma}{gamma}, where X{sup 0} is a low-mass C-odd boson. An experimental search for X{sup 0} is reported in which Compton-like interactions with electrons or decay {gamma} rays (X{sup 0}{r_arrow}3{gamma}) could be detected. None are observed and sensitive, but model-dependent limits are set (for two specific models). One model, testable by this method, allows the good agreement between theory and experiment for the parapositronium decay rate to be reconciled with the disagreement for the o-Ps decay rate. {copyright} {ital 1997} {ital The American Physical Society}
- OSTI ID:
- 450308
- Journal Information:
- Physical Review A, Journal Name: Physical Review A Journal Issue: 2 Vol. 55; ISSN 1050-2947; ISSN PLRAAN
- Country of Publication:
- United States
- Language:
- English
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