Improved bounds on the dipole moments of the tau-neutrino at high-energy γ^* e^- and γ^* γ^* collisions: ILC and CLIC

2014/12/31 by A. Gutiérrez-Rodríguez, M. Koksal, A. A. Billur · 1 citation
Physics and Astronomy · #hep-ph

paper · pdf · doi:10.1103/physrevd.91.093008

25 pages, 14 figures

arxiv created 2015/05/03 · arxiv updated 2015/06/11

Abstract

In this work we study the potential of the processes e⁺e^- → e⁺γ^* e^- → e⁺τν_τν_e and e⁺e^- → e⁺γ^* γ^* e^- → e⁺ν_τν_τe^- 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\hspace1mmfb^-1 and center-of-mass energy of 3\hspace1mmTeV, we derive 95 % \hspace1mmC. L. limits on the dipole moments: μ_ντ≤ 1.44 × 10^-6μ_B and d_ντ≤ 2.78 × 10^-17\hspace1mm e\hspace0.5mm cm in the γ^* e^- collision mode and of μ_ντ≤ 3.4 × 10^-7μ_B and d_ντ≤ 6.56 × 10^-18\hspace1mm e\hspace0.5mmcm with the γ^*γ^* collision mode, improving the existing limits.

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