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arXiv · 2111.10394

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

J. A. Aguilar-Saavedra·M. C. N. Fiolhais·P. Martín-Ramiro·J. M. Moreno·A. Onofre
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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.

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J. A. Aguilar-Saavedra, M. C. N. Fiolhais, P. Martín-Ramiro, J. M. Moreno, A. Onofre. 2021-11-19. A template method to measure the $t \bar t$ polarisation. https://doi.org/10.1140/epjc%2Fs10052-022-10063-z

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