Effect of Relic Neutrino on Neutrino Pair Emission from Metastable Atoms

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dc.creatorTakahashi, Toru
dc.creatorYoshimura, M.
dc.date2007-03-02
dc.date.accessioned2026-07-07T07:51:05Z
dc.date.available2026-07-07T07:51:05Z
dc.descriptionA possiblity of measuring the cosmic neutrino temperature $\sim 1.9 K$ and other important quantities such as the chemical potential $μ$ and the decoupling temperature $T_d$ is discussed, using the recently proposed process of photon irradiated neutrino pair emission from metastable atoms. The Pauli blocking effect of relic neutrinos reduces the rate by a large factor $\approx (1 + m_1/T_d)/4$ at the threshold of the lightest neutrino pair (of mass $2m_1$). Correction of linear order in $μ$ near the mass thresholds can be used to improve the constraint on the lepton asymmetry.
dc.description12 pages and 6 figures
dc.identifierhttps://arxiv.org/abs/hep-ph/0703019
dc.identifierhttp://arxiv.org/abs/hep-ph/0703019
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/125386
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectAstrophysics
dc.subjectHigh Energy Physics - Experiment
dc.subjectAtomic Physics
dc.titleEffect of Relic Neutrino on Neutrino Pair Emission from Metastable Atoms
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