Radiative corrections to neutrino energy loss rate in stellar interiors

Details Radiative corrections to neutrino energy loss rate in stellar interiors Radiative corrections to neutrino energy loss rate in stellar interiors

2001-12-17

arxiv.org/abs/astro-ph/0112384v2

Mod.Phys.Lett. A17 (2002) 491-502

Astronomy and Astrophysics

Astrophysics

LaTeX, 13 pages, 9 figure files; major revision due to a numerical error now corrected

Scientific paper

10.1142/S0217732302006643

We consider radiative electromagnetic corrections, at order \alpha, to the process $e^+ e^- \to \nu \bar{\nu}$ 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 $(-4 \div 1) %$ 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.

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