Deutsch, Jules
[UCL]
Favart, Denis
[UCL]
Lebrun, M.
Lipnik, Peter
[UCL]
Macq, Pierre
[UCL]
Prieels, René
[UCL]
The emission of two photons above 25 MeV energy was observed in the capture of stopped pions by beryllium and carbon with a rate of (1.0+/-0.1)*10/sup -5/, respectively (1.4+/-0.2)*10/sup -5/ per capture. These rates are about two to four times greater than various free-nucleon estimates based on the pi /sup -/+ pi /sup +/ rarr gamma gamma annihilation mechanism alone.
Bibliographic reference |
Deutsch, Jules ; Favart, Denis ; Lebrun, M. ; Lipnik, Peter ; Macq, Pierre ; et. al. Observation of two-photon emission in nuclear pion capture. In: Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 80B, no. 4-5, p. 347-349 (1979) |
Permanent URL |
http://hdl.handle.net/2078.1/66581 |