Remarks on the process γγ-->νν¯ in astrophysics

Details Remarks on the process γγ-->νν¯ in astrophysics Remarks on the process γγ-->νν¯ in astrophysics

Apr 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995phrvd..51.4587g&link_type=abstract

Physical Review D (Particles, Fields, Gravitation, and Cosmology), Volume 51, Issue 8, 15 April 1995, pp.4587-4590

Astronomy and Astrophysics

Astrophysics

1

Elementary Particle Processes, Neutrino Interactions, Non-Standard-Model Neutrinos, Right-Handed Neutrinos, Etc.

Scientific paper

We discuss the astrophysical consequences of the process γγ-->νν¯, when this reaction is mediated by either Majorons or composite neutral leptons, and present the constraints on their coupling coming from stellar energy loss arguments. We also discuss the effect of nuclear absorption when this reaction is mediated by pions, and show that no significant output of energy is provided in this case. Finally, we comment on the importance of these processes in cosmology.

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