# Laboratory frame analysis of $e^+ e^- \to \mu^+ \mu^-$ scattering in the Noncommutative Standard Model

Research paper by Prasanta Kumar Das, Abhishodh Prakash

Indexed on: 04 Mar '12Published on: 04 Mar '12Published in: High Energy Physics - Phenomenology

#### Abstract

We study the muon pair production $e^+ e^- \to \mu^+ \mu^-$ in the framework of the non-minimal noncommutative(NC) standard model to the second order of the NC parameter $\Theta_{\mu\nu}$. The $\mathcal{O}(\Theta^2)$ momentum dependent NC interaction significantly modifies the cross section and angular distributions which are different from the standard model. After including the effects of earth's rotation we analyse the time-averaged and time dependent observables in detail. The time-averaged azimuthal distribution of the cross section shows siginificant departure from the standard model. We find strong dependence of the total cross section(time- averaged) and their distributions on the orientation of the noncommutative electric vector (${\vec{\Theta}}_E$). The periodic variation of the total cross-section with time over a day seems to be startling and can be thoroughly probed at the upcoming Linear Collider(LC).