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

Abstract We develop a template method for the measurement of the polarisation of $$t {\bar{t}}$$ t t ¯ pairs produced in hadron collisions. The method would allow to extract the individual fractions of $$t_L \bar{t}_L$$ t L t ¯ L , $$t_R {\bar{t}}_R$$ t R t ¯ R , $$t_L {\bar{t}}_R$$ t L t ¯ R and $$...

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Bibliographic Details
Published inThe European physical journal. C, Particles and fields Vol. 82; no. 2
Main Authors Aguilar-Saavedra, J. A., Fiolhais, M. C. N., Martín-Ramiro, P., Moreno, J. M., Onofre, A.
Format Journal Article
LanguageEnglish
Published 01.02.2022
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Summary:Abstract We develop a template method for the measurement of the polarisation of $$t {\bar{t}}$$ t t ¯ pairs produced in hadron collisions. The method would allow to extract the individual fractions of $$t_L \bar{t}_L$$ t L t ¯ L , $$t_R {\bar{t}}_R$$ t R t ¯ R , $$t_L {\bar{t}}_R$$ t L t ¯ R and $$t_R {\bar{t}}_L$$ t R 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 $${\bar{t}}$$ t ¯ , as well as their spin correlation for arbitrary axes.
ISSN:1434-6044
1434-6052
DOI:10.1140/epjc/s10052-022-10063-z