Unparticle searches through low energy parity violating asymmetry

Abstract

In this paper, we study the effects of the unparticles on the parity violating asymmetry for the low energy electron-electron scattering, ${e}^{\ensuremath{-}}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}{e}^{\ensuremath{-}}{e}^{\ensuremath{-}}$. Using the data from the E158 experiment at SLAC we extract the limits on the unparticle coupling ${\ensuremath{\lambda}}_{\mathrm{AV}}$, and on the energy scale $\ensuremath{\Lambda}$ at 95% C.L. for various values of the scaling dimension $d$.