Forward-backward asymmetry and differential cross section of top quark in flavor violating $Z&#x27;$ model at $mathscr{O}α s^2 α X$ - High Energy Physics - Phenomenology

Forward-backward asymmetry and differential cross section of top quark in flavor violating $Z&#x27;$ model at $mathscr{O}α s^2 α X$ - High Energy Physics - Phenomenology - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

Abstract: In this paper, forward-backward asymmetry and differential cross section oftop quark in flavor violating $Z-$ model up to $\mathscr{O}\alpha s^2\alpha X$ at Tevatron are calculated. In order to account for the top observedlarge forward-backward asymmetry, the new coupling $g X$ among $Z-$ and quarkswill be not much less than strong coupling constant $g s$. After including thenew higher order correction, the differential cross section can fit the databetter than those only including the leading contributions from $Z-$, while theforward-backward asymmetry is still in agreement with the measurement.

Autor: Bo Xiao, You-kai Wang, Shou-hua Zhu

Fuente: https://arxiv.org/