In this work we study the potential of the processes $e^+e^- \to e^+\gamma^* e^- \to e^+\tau \bar\nu_\tau \nu_e $ and $e^+e^- \to e^+\gamma^* \gamma^* e^- \to e^+\nu_\tau \bar\nu_\tau e^- $ at a future high-energy and high-luminosity linear electron positron collider, such as the ILC and CLIC to study the sensibility on the anomalous magnetic and electric dipole moments of the tau-neutrino. For integrated luminosity of 590\hspace{ 1mm}$fb^{ -1}$ and center-of-mass energy of 3\hspace{ 1mm}$TeV$, we derive $95 \% \hspace{ 1mm}C. L.$ limits on the dipole moments: $\mu_{ \nu_\tau}\leq 1.44 \times 10^{ -6}\mu_B$ and $d_{ \nu_\tau}\leq 2.78 \times 10^{ -17}\hspace{ 1mm} e\hspace{ 0.5mm} cm$ in the $\gamma^* e^-$ collision mode and of $\mu_{ \nu_\tau}\leq 3.4 \times 10^{ -7}\mu_B$ and $d_{ \nu_\tau}\leq 6.56 \times 10^{ -18}\hspace{ 1mm} e\hspace{ 0.5mm}cm$ with the $\gamma^*\gamma^*$ collision mode, improving the existing limits.
Categories: hep-ph