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

2002/10/22 by Martin Hirsch, M. Hirsch, Enrico Nardi +1 · 51 citations
Physics and Astronomy · #Anomalous magnetic dipole moment #Astrophysics and Cosmic Phenomena #Charge (physics) #Charge radius #MAJORANA #Muon #Neutrino #Neutrino Physics Research #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Proton #RADIUS #Resonance (particle physics) #hep-ph

paper · pdf · doi:10.1103/physrevd.67.033005

published in Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields 67(3) (American Physical Society) · 20 pages, 2 eps figures. CCFR data included in the analysis. Conclusion unchanged

arxiv created 2002/10/22 · openalex publication_date 2003/02/27 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

A Majorana neutrino is characterized by just one flavor diagonal electromagnetic form factor, the anapole moment, which in the static limit corresponds to the axial vector charge radius 〈r_A²〉. 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^\ensuremath-\ensuremath→\ensuremathν\ensuremathν\ensuremathγ off Z resonance, and we discuss the constraints that these measurements can set on 〈r_A²〉 for the \ensuremathτ neutrino. We also derive limits for the Dirac case, when the presence of a vector charge radius 〈r_V²〉 is allowed. Finally, we comment on additional experimental data on \ensuremathν_\ensuremathμ scattering from the NuTeV, E734, CCFR, and CHARM-II Collaborations, and estimate the limits implied for 〈r_A²〉 and 〈r_V²〉 for the muon neutrino.

Citations

• Charge radius of the neutrino
• Electroweak Results from NuTeV
• Super-Kamiokande atmospheric neutrino results
• Bounds on tau neutrino magnetic moment and charge radius from Super-K and SNO observations
• Direct Evidence for Neutrino Flavor Transformation from Neutral-Current Interactions in the Sudbury Neutrino Observatory
• SolarB<mml:mprescripts/>8and hep Neutrino Measurements from 1258 Days of Super-Kamiokande Data
• Observability of the anapole moment and neutrino charge radius
• Determination of electroweak parameters from the elastic scattering of muon neutrinos and antineutrinos on electrons
• THE TOROID DIPOLE MOMENT OF THE NEUTRINO
• Review of particle properties
• Review of Particle Physics

Cited by

• Electroweak Observables in Neutrino-Electron Scattering from a Muon Storage Ring