Bounds on dipole moments of tau-neutrino from single photon searches in $SU(4)_L\times U(1)_X$ model at CLIC and ILC energies

TL;DR

This study explores the potential to set new bounds on the tau-neutrino's dipole moments at future high-energy colliders within an extended gauge model, significantly improving existing limits through detailed reaction analysis.

Contribution

It provides novel bounds on tau-neutrino dipole moments using $SU(4)_L imes U(1)_X$ model predictions at CLIC and ILC energies, surpassing previous experimental constraints.

Findings

Limits on tau-neutrino magnetic dipole moment improved by 2-3 orders of magnitude.

Constraints depend on collider energy and luminosity.

Analysis demonstrates the collider's potential to probe neutrino electromagnetic properties.

Abstract

We investigate the dipole moments of the tau- neutrino at high-energy and high luminosity at linear electron positron colliders, such as CLIC or ILC through the analysis of the reaction $e^{+}\, e^{-}\rightarrow \nu\, \bar \nu \,\gamma$ in the framework of the $SU(4)_L \times U(1)_X$ model. The limits on dipole moment were obtained for integrated luminosity of $\cal{L}$= 500-2000\, fb$^{-1}$ and center of mass between 0.5 and 3.0 TeV. The estimated limits for the tau-neutrino magnetic and electric dipole moments are improved by 2-3 orders of magnitude and complement previous studies on the dipole moments.