Kinematical distributions of coherent neutrino trident production in gauged $L_{\mu }-L_{\tau }$ model

Abstract

We analyze the distributions of energy, opening angle and invariant mass in muonic neutrino trident production processes, ${\nu }_{\mu }\to {\nu }_{\mu }\mu \overline{\mu }$, in a minimal gauged $U(1{)}_{L_{\mu }-L_{\tau }}$ model, in which the discrepancy of anomalous magnetic moment of muon can be solved. It is known that the total cross sections of the neutrino trident production are degenerate in new physics parameters, the new gauge coupling and gauge boson mass, and therefore other observables are needed to determine these parameters. From numerical analyses, we find that the muon energy and invariant mass distributions show the differences among the new physics parameter sets with which the total cross sections have the same value, while the anti-muon energy and opening angle distributions are not sensitive to the parameters.

Comments: 27 pages, 10 figures, 3 tables