On the muon neutrino mass

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dc.creatorAngelov, N.
dc.creatorBalestra, F.
dc.creatorBatusov, Yu.
dc.creatorBianconi, A.
dc.creatorBussa, M. P.
dc.creatorBusso, L.
dc.creatorFerrero, L.
dc.creatorGarfagnini, R.
dc.creatorGnesi, I.
dc.creatorRizzini, E. Lodi
dc.creatorMaggiora, A.
dc.creatorPanzieri, D.
dc.creatorPiragino, G.
dc.creatorPontecorvo, G.
dc.creatorTosello, F.
dc.creatorVenturelli, L.
dc.date2006-05-03
dc.date.accessioned2026-07-07T10:26:11Z
dc.date.available2026-07-07T10:26:11Z
dc.descriptionDuring the runs of the PS 179 experiment at LEAR of CERN, we photographed an event of antiproton-Ne absorption, with a complete pi+ -> mu+ ->e+ chain. From the vertex of the reaction a very slow energy pi+ was emitted. The pi+ decays into a mu+ and subsequently the mu+ decays into a positron. At the first decay vertex a muon neutrino was emitted and at the second decay vertex an electron neutrino and a muon antineutrino. Measuring the pion and muon tracks and applying the momentum and energy conservation and using a classical statistical interval estimator, we obtained an experimental upper limit for the muon neutrino mass: m_nu < 2.2 MeV at a 90% confidence level. A statistical analysis has been performed of the factors contributing to the square value of the neutrino mass limit.
dc.description18 pages, 5 eps figures
dc.identifierhttps://arxiv.org/abs/nucl-ex/0605002
dc.identifierhttp://arxiv.org/abs/nucl-ex/0605002
dc.identifierNucl.Phys.A780:78-89,2006
dc.identifierdoi:10.1016/j.nuclphysa.2006.09.011
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/176796
dc.subjectNuclear Experiment
dc.titleOn the muon neutrino mass
dc.typetext

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