An improved cosmological bound on the tau-neutrino mass

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dc.creatorDolgov, A. D.
dc.creatorPastor, S.
dc.creatorValle, J. W. F.
dc.date1996-02-06
dc.date.accessioned2026-07-07T10:33:17Z
dc.date.available2026-07-07T10:33:17Z
dc.descriptionWe consider the influence of non-equilibrium electronic neutrinos (and anti-neutrinos) on the neutron-to-proton ratio. These neutrinos would come from massive $ν_τ$ annihilations $\bar ν_τν_τ\rightarrow \bar ν_e ν_e$. For sufficiently large $ν_τ$ masses this new effect would strongly enhance the (n/p)-ratio, leading to a very stringent bound on the $ν_τ$ mass, even adopting a rather weak upper bound on the effective number on neutrino species during nucleosynthesis.
dc.description10 pages, LaTex file + 1 figure compressed using uufiles
dc.identifierhttps://arxiv.org/abs/hep-ph/9602233
dc.identifierhttp://arxiv.org/abs/hep-ph/9602233
dc.identifierPhys.Lett.B383:193-198,1996
dc.identifierdoi:10.1016/0370-2693(96)00718-6
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/179056
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectAstrophysics
dc.titleAn improved cosmological bound on the tau-neutrino mass
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