Charge asymmetries in $\gamma\gamma \to \mu^+\mu^- + \nu_{\mu} \bar{\nu}_\mu$ / $\gamma \gamma \to W^\pm\mu^\mp +\nu_\mu$ with polarized photons

Abstract

It is shown that the difference in the distributions of positive ($\mu^+$) and negative charged leptons ($\mu^-$) in reactions $\gamma \gamma \to \mu^+\mu^-+\nu\bar\nu$ and $\gamma \gamma \to W^\pm\mu^\mp +\nu(\bar\nu)$ at $\sqrt{s}>200$ GeV leads to observable {\em charge asymmetry} of muons which is sensitive to New Physics effects.