Precision Rates for Nucleon Weak Interactions in Primordial Nucleosynthesis and He-4 Abundance

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dc.creatorEsposito, S.
dc.creatorMangano, G.
dc.creatorMiele, G.
dc.creatorPisanti, O.
dc.date1998-08-19
dc.date1998-11-09
dc.date.accessioned2026-07-07T12:01:07Z
dc.date.available2026-07-07T12:01:07Z
dc.descriptionWe report the results of a detailed calculation of nucleon weak interactions relevant for the neutron to proton density ratio at the onset of primordial nucleosynthesis. Radiative electromagnetic corrections, finite nucleon mass terms, thermal radiative effects on weak processes and on neutrino temperature are taken into account to reduce the theoretical uncertainty on $n \leftrightarrow p $ rates to 1%. This translates into a sensitivity in $^4 He$ mass fraction $Y_p$ prediction up to $10^{-4}$. We find a positive total correction to the Born prediction $δY_p \simeq 0.004$.
dc.description50 pages, latex, 15 figures, minor changes in formulas and figures
dc.identifierhttps://arxiv.org/abs/astro-ph/9808196
dc.identifierhttp://arxiv.org/abs/astro-ph/9808196
dc.identifierNucl.Phys.B540:3-36,1999
dc.identifierdoi:10.1016/S0550-3213(98)00757-3
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/207000
dc.subjectAstrophysics
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectHigh Energy Physics - Phenomenology
dc.titlePrecision Rates for Nucleon Weak Interactions in Primordial Nucleosynthesis and He-4 Abundance
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