Model-independent sensibility studies for the anomalous dipole moments of the nu(tau) at the CLIC based e(+)e(-) and gamma e(-) colliders

Abstract

To improve the theoretical prediction of the anomalous dipole moments of the t-neutrino, we have carried out a study through the processes e(+)e(-)-> (gamma, Z) -> nu(tau) (nu) over bar (tau)gamma and gamma e(-)-> tau(nu) over bar (tau)nu(e), which represent an excellent and useful option in determination of these anomalous parameters. Furthermore, we consider the effective Lagrangian formalism which induces contributions to the dipole moments of the tau-neutrino. To study the potential of the processes e(+)e(-)-> (gamma, Z) -> nu(tau) (nu) over bar (tau)gamma and gamma e(-)-> tau(nu) over bar (tau)nu(e) we apply a future high-energy and high-luminosity linear electron-positron collider, such as the CLIC, with root s = 380, 1500, 3000 GeV and L = 10, 50, 100, 200, 500, 1000, 1500, 2000, 3000 fb(-1), and we consider systematic uncertainties of dsys delta(sys) = 0%, 5%, 10%. Furthermore, we including initial state radiation plus beamstrahlung effects. With these elements, we present a comprehensive and detailed sensitivity study on the total cross section of the processes e(+)e(-)-> (gamma, Z) -> nu(tau) (nu) over bar (tau)gamma and gamma e(-)-> iota(nu) over bar (tau)nu(e), as well as on the dipole moments (kappa) over bar nu(tau) and (d) over tilde nu(tau) at the 95% C.L., showing the feasibility of such processes at the CLIC at the e(+)e(-) and gamma e(-) modes with unpolarized and polarized electron-positron beams.