We consider radiative electromagnetic corrections, at order α, to the process e+e- → vv̄ at finite density and temperature. This process represents one of the main contributions to the cooling of stellar environments in the late stages of star evolution. We find that these corrections affect the energy loss rate by a factor (-4-1)% with respect to the tree level estimate, in the temperature and density ranges where the neutrino pair production via e+e- annihilation is the most efficient cooling mechanism.
RADIATIVE CORRECTIONS TO NEUTRINO ENERGY LOSS RATE IN STELLAR INTERIORS / Esposito, S.; Mangano, G.; Miele, Gennaro; Picardi, Ilenia; Pisanti, Ofelia. - In: MODERN PHYSICS LETTERS A. - ISSN 0217-7323. - 17:8(2002), pp. 491-502. [10.1142/S0217732302006643]
RADIATIVE CORRECTIONS TO NEUTRINO ENERGY LOSS RATE IN STELLAR INTERIORS
ESPOSITO S.;MANGANO G.;MIELE, GENNARO;PICARDI, ILENIA;PISANTI, OFELIA
2002
Abstract
We consider radiative electromagnetic corrections, at order α, to the process e+e- → vv̄ at finite density and temperature. This process represents one of the main contributions to the cooling of stellar environments in the late stages of star evolution. We find that these corrections affect the energy loss rate by a factor (-4-1)% with respect to the tree level estimate, in the temperature and density ranges where the neutrino pair production via e+e- annihilation is the most efficient cooling mechanism.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
