A template method to measure the $t \bar t$ polarisation

Authors

J. A. Aguilar-Saavedra, Instituto de Física Teórica, IFT-UAM/CSIC
M. C. N. Fiolhais, CUNY Borough of Manhattan Community CollegeFollow
P. Martín-Ramiro, Instituto de Física Teórica, IFT-UAM/CSIC
J. M. Moreno, Instituto de Física Teórica, IFT-UAM/CSIC
António Onofre, Universidade do Minho

Document Type

Article

Publication Date

2022

Abstract

We develop a template method for the measurement of the polarisation of $t \bar t$ pairs produced in hadron collisions. The method would allow to extract the individual fractions of $t_L \bar t_L$, $t_R \bar t_R$, $t_L \bar t_R$ and $t_R \bar t_L$ pairs with a fit to data, where L, R refer to the polarisation along any axis. These polarisation fractions have not been independently measured at present. Secondarily, the method also provides the net polarisation of t and $\bar t$, as well as their spin correlation for arbitrary axes.

Comments

This article was originally published in the European Physical Journal C, available at https://doi.org/10.1140/epjc/s10052-022-10063-z

This work is distributed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).