Absolute neutrino mass from helicity measurements

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dc.creatorNishi, C. C.
dc.date2008-05-16
dc.date2008-06-21
dc.date.accessioned2026-07-07T12:41:25Z
dc.date.available2026-07-07T12:41:25Z
dc.descriptionThe possibility to access the absolute neutrino mass scale through the measurement of the wrong helicity contribution of charged leptons is investigated in pion decay. Through this method, one may have access to the same effective mass $m^2_β$ extractable from the tritium beta decay experiments for electron neutrinos as well as the analogous effective mass $(m^2_{ν_μ})_{\rm eff}$ for muon neutrinos. In the channel $π^-\to e^-\barν$, the relative probability of producing an antineutrino with left helicity is enhanced if compared with the naive expectation $(m_ν/2E_ν)^2$. The possibility to constrain new interactions in the context of Two-Higgs-Doublet models is also investigated.
dc.descriptionv2: References and comments added. v3: reference numbers changed. Accepted for Mod. Phys. Lett. A
dc.identifierhttps://arxiv.org/abs/0805.2597
dc.identifierhttp://arxiv.org/abs/0805.2597
dc.identifierMod.Phys.Lett.A24:219-227,2009
dc.identifierdoi:10.1142/S021773230902814X
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/219762
dc.subjectHigh Energy Physics - Phenomenology
dc.titleAbsolute neutrino mass from helicity measurements
dc.typetext

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