Implications of a nonzero neutrino mass for the process γγ-->νν¯

Details Implications of a nonzero neutrino mass for the process γγ-->νν¯ Implications of a nonzero neutrino mass for the process γγ-->νν¯

Oct 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977phrvd..16.2377f&link_type=abstract

Physical Review D (Particles and Fields), Volume 16, Issue 7, 1 October 1977, pp.2377-2378

Astronomy and Astrophysics

Astrophysics

11

Scientific paper

Recent considerations relating to neutrino oscillations and to the decay μ-->eγ suggest that neutrinos may acquire a small but nonzero mass. The process γγ-->π0-->νν¯ could then proceed via either an induced S,P coupling arising from a primitive V,A neutrino current or via a fundamental S,P neutrino coupling. Although the resulting γγ-->π0-->νν¯ cross section would, in the former case, be suppressed by a factor of order (mνmπ)2, this process could, nonetheless, be of interest in astrophysical processes in a temperature region where the pion pole is significant.

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