New searches for the C-noninvariant decay π0-->3γ and the rare decay π0-->4γ
Abstract
A search for the charge-conjugation-noninvariant decay π0-->3γ has been made using the Crystal Box of the Los Alamos Meson Physics Facility. No signal in excess of background was observed, resulting in a branching-ratio upper limit of 3.1×10-8 (90% C.L.). A new upper limit of 2×10-8 (90% C.L.) was also established for the allowed decay π0-->4γ.
- Publication:
-
Physical Review D
- Pub Date:
- October 1988
- DOI:
- 10.1103/PhysRevD.38.2121
- Bibcode:
- 1988PhRvD..38.2121M
- Keywords:
-
- 13.40.Hq;
- 11.30.Er;
- 14.40.Aq;
- Electromagnetic decays;
- Charge conjugation parity time reversal and other discrete symmetries;
- pi K and eta mesons