Bounds on the tau and muon neutrino vector and axial vector charge radius

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dc.creatorHirsch, Martin
dc.creatorNardi, Enrico
dc.creatorRestrepo, Diego
dc.date2002-10-09
dc.date2002-10-22
dc.date.accessioned2026-07-07T10:33:09Z
dc.date.available2026-07-07T10:33:09Z
dc.descriptionA Majorana neutrino is characterized by just one flavor diagonal electromagnetic form factor: the anapole moment, that in the static limit corresponds to the axial vector charge radius <r^2_A>. Experimental information on this quantity is scarce, especially in the case of the tau neutrino. We present a comprehensive analysis of the available data on the single photon production process $e^+ e^- -> ν\barνγ$ off Z-resonance, and we discuss the constraints that these measurements can set on <r^2_A> for the tau neutrino. We also derive limits for the Dirac case, when the presence of a vector charge radius <r^2_V> is allowed. Finally, we comment on additional experimental data on $ν_μ$ scattering from the NuTeV, E734, CCFR and CHARM-II collaborations, and estimate the limits implied for <r^2_A> and <r^2_V> for the muon neutrino.
dc.description20 pages, 2 eps figures. CCFR data included in the analysis. Conclusion unchanged
dc.identifierhttps://arxiv.org/abs/hep-ph/0210137
dc.identifierhttp://arxiv.org/abs/hep-ph/0210137
dc.identifierPhys.Rev.D67:033005,2003
dc.identifierdoi:10.1103/PhysRevD.67.033005
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/179009
dc.subjectHigh Energy Physics - Phenomenology
dc.titleBounds on the tau and muon neutrino vector and axial vector charge radius
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