Right-handed neutrino production in dense and hot plasmas
Por:
Ayala A., D'Olivo J.C., Torres M.
Publicada:
1 ene 2000
Resumen:
For Dirac neutrinos with magnetic moment, we compute the production rate for right-handed neutrinos in a hot and dense QED plasma containing an initial population of left-handed neutrinos thermally distributed. The most important mechanisms for vL depolarization, or production of right-handed neutrinos, are the vL ? vR chirality flip and the plasmon decay to v¯L + vR. The rates for these processes are computed in terms of a resummed photon propagator which consistently incorporates the background effects to leading order. Applying the results to the cases of supernovae core collapse and the primordial nucleosynthesis in the early universe, we obtain upper limits on the neutrino magnetic moment. © 2000 Elsevier Science B.V. All rights reserved.
Filiaciones:
Ayala A.:
Instituto de Ciencias Nucleares, Universidad Nacional Autonoma Mexico, Apartado Postal 70-543, México D.F. 04510, Mexico
D'Olivo J.C.:
Instituto de Ciencias Nucleares, Universidad Nacional Autonoma Mexico, Apartado Postal 70-543, México D.F. 04510, Mexico
Torres M.:
Instituto de Física, Universidad Nacional Autonoma Mexico, Apartado Postal 20-364, México D.F. 01000, Mexico
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