The 16th International Workshop on Tau Lepton Physics (TAU2021) (Virtual Edition)

September 27, 2021 to October 1, 2021
Indiana University
America/Indiana/Indianapolis timezone

T violating effects in $\nu_{\tau} (\bar{\nu}_{\tau})-$nucleon quasielastic scattering

Oct 1, 2021, 10:50 AM
2h
Virtual (Indiana University)

Virtual

Indiana University

Poster contribution Tau2021 Abstracts

Speaker

Atika Fatima (Aligarh Muslim University)

Description

The future experiments like SHiP, DsTau, and DUNE are proposed to study the properties and the production cross sections of the $\tau$ lepton and its corresponding neutrino ($\nu_{\tau}$). Recently we have performed [1,2,3], a theoretical study of the production cross section as well as the polarization observables of the $\tau$ lepton and the final nucleon/hyperon produced in the quasielastic $\nu_{\tau} (\bar{\nu}_{\tau})-N$ scattering in the few GeV energy region relevant to the above experiments. The $\tau$ lepton produced in $\nu_{\tau}-N$ scattering decays to leptons and pions through the leptonic and hadronic decay modes. In this energy region, the production cross section of $\tau$, its decay and the characteristics of the decay products depend significantly on the $\tau$ polarization. The production cross section and polarization of $\tau$ lepton are calculated using weak nucleon form factors which are determined using various symmetry properties of the weak currents in the vector and axial vector sectors, assuming G and T invariances. We have studied the effect of G and T violating terms in the transition matrix element on the cross sections and the $\tau$ polarization in quasielastic $\nu_{\tau}(\bar{\nu}_{\tau})-N$ scattering induced by $\Delta S=0$ and $\Delta S=1$ weak currents. In the case of $\Delta S=1$ reactions, we have also studied the SU(3) symmetry breaking effects.

[1] A. Fatima, M. Sajjad Athar and S. K. Singh, Phys. Rev. D 102, 113009 (2020).
[2] A. Fatima, M. Sajjad Athar and S. K. Singh, [arXiv:2106.14590 [hep-ph]].
[3] A. Fatima, M. Sajjad Athar and S. K. Singh, Phys. Rev. D 98, 033005 (2018).

What is your topic? CP and T violation

Primary author

Atika Fatima (Aligarh Muslim University)

Co-authors

Prof. M. Sajjad Athar (Aligarh Muslim University) Prof. S. K. Singh (Aligarh Muslim University)