A template method to measure the tt polarisation
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Aguilar Saavedra, Juan Antonio; Fiolhais, Miguel C. N.; Martín Ramiro, P.; Moreno, J. M.; Onofre, AntonioEditorial
Springer Science and Business Media Deutschland GmbH
Date
2022-02-12Referencia bibliográfica
Aguilar-Saavedra, J.A., Fiolhais, M.C.N., Martín-Ramiro, P. et al. A template method to measure the tt¯ polarisation. Eur. Phys. J. C 82, 134 (2022).[ https://doi.org/10.1140/epjc/s10052-022-10063-z]
Sponsorship
IFT Centro de Excelencia Severo Ochoa PID2019-110058GB-C21, PID2019-110058GB-C22, SEV-2016-0597; PSC-CUNY 63096-00 51, 64031-00 52; Spanish Research Agency; Family Process Institute BES-2016-076775; Ministerio de Ciencia e Innovación; European Regional Development Fund CERN/FIS-PAR/0004/2019, CERN/FIS-PAR/0029/2019; Fundació Catalana de Trasplantament; Agencia Estatal de InvestigaciónAbstract
We develop a template method for the measurement of the polarisation of tt¯ pairs produced in hadron collisions. The method would allow to extract the individual fractions of tLt¯ L, tRt¯ R, tLt¯ R and tRt¯ 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 t¯ , as well as their spin correlation for arbitrary axes.