Probe of electromagnetic moments of the tau lepton in gamma-gamma collisions at the CLIC

Abstract

We have investigated the electromagnetic moments of the tau lepton in $e^{+}{e}^{-}\to e^{+}{\gamma }^{\ast }{\gamma }^{\ast }{e}^{-}\to e^{+}\tau \bar{\tau }{e}^{-}$ process at the CLIC. We have obtained 95% confidence level bounds on the anomalous magnetic and electric dipole moments for various values of the integrated luminosity and the center of mass energy. We have shown that the $e^{+}{e}^{-}\to e^{+}{\gamma }^{\ast }{\gamma }^{\ast }{e}^{-}\to e^{+}\tau \bar{\tau }{e}^{-}$ process at the CLIC leads to a remarkable improvement in the existing experimental bounds on the anomalous magnetic and electric dipole moments.

17 pages, 5 figures, accepted by PRD

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