Limits on nu_e and anti-nu_e disappearance from Gallium and reactor experiments

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dc.creatorAcero, Mario A.
dc.creatorGiunti, Carlo
dc.creatorLaveder, Marco
dc.date2007-11-27
dc.date2008-09-17
dc.date.accessioned2026-07-07T11:54:24Z
dc.date.available2026-07-07T11:54:24Z
dc.descriptionThe deficit observed in the Gallium radioactive source experiments is interpreted as a possible indication of the disappearance of electron neutrinos. In the effective framework of two-neutrino mixing we obtain $\sin^{2}2\vartheta \gtrsim 0.03$ and $Δ{m}^{2} \gtrsim 0.1 \text{eV}^{2}$. The compatibility of this result with the data of the Bugey and Chooz reactor short-baseline antineutrino disappearance experiments is studied. It is found that the Bugey data present a hint of neutrino oscillations with $0.02 \lesssim \sin^{2}2\vartheta \lesssim 0.08$ and $Δ{m}^{2} \approx 1.8 \text{eV}^{2}$, which is compatible with the Gallium allowed region of the mixing parameters. This hint persists in the combined analyses of Bugey and Chooz data, of Gallium and Bugey data, and of Gallium, Bugey, and Chooz data.
dc.description21 pages. Final version to be published in Phys. Rev. D
dc.identifierhttps://arxiv.org/abs/0711.4222
dc.identifierhttp://arxiv.org/abs/0711.4222
dc.identifierPhys.Rev.D78:073009,2008
dc.identifierdoi:10.1103/PhysRevD.78.073009
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/204884
dc.subjectHigh Energy Physics - Phenomenology
dc.titleLimits on nu_e and anti-nu_e disappearance from Gallium and reactor experiments
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