Bounding the magnetic and electric dipole moments of tau nu from the process e+e- --> nu bar nu gamma in E6 Superstring Models

2006/05/31 by A. Gutierrez-Rodriguez, M. A. Hernandez-Ruiz, B. Jayme-Valdes +1 · 2 citations
Physics and Astronomy · #hep-ph

paper · pdf · doi:10.1103/physrevd.74.053002

published as Phys.Rev.D74:053002,2006 · 17 pages, 2 figure

arxiv created 2006/08/29 · arxiv updated 2011/03/23

Abstract

We obtain bounds on the anomalous magnetic and electric dipole moments of the tau-neutrino through the reaction e⁺e^-→ ν νγ at the Z₁-pole in the framework of a Left-Right symmetric model and a class of E₆ inspired models with an additional neutral vector boson Z_θ. We use the data collected by the L3 Collaboration at LEP. For the parameters of the E₆ model we consider the mixing angle θ_E6=37.8^o and M_Zθ=7M_Z1. We find that our bounds are of the same order of magnitude as those obtained in other extensions of the Standard Model.

Cited by

• Bounds on dipole moments of tau-neutrino from single photon searches in SU(4)_L× U(1)_X model at CLIC and ILC energies
• Bounds on the dipole moments of the tau-neutrino via the process e⁺e^-→ ν νγ in a 331 model