A template method to measure the t(t)over-bar polarisation

• Published in: The European physical journal. C, Particles and fields Vol. 82; no. 2
• Main Authors: Aguilar-Saavedra, J. A., Fiolhais, M. C. N., Martin-Ramiro, P., Moreno, J. M., Onofre, A.
• Format: Journal Article
• Language: English
• Published: Springer 01.02.2022
• Subjects: Ciências Físicas; Ciências Naturais; Science & Technology
• ISSN: 1434-6052
• DOI: 10.1140/epjc/s10052-022-10063-z

This manuscript has no associated data or the data will not be deposited. [Authors’ comment: The datasets generated during and/or analysed during the current study are available from the corresponding author on reasonable request.] We develop a template method for the measurement of the polarisation of t (t) over bar pairs produced in hadron collisions. The method would allow to extract the individual fractions of t(L)(t) over bar (L), t(R)(t) over bar (R), t(L)(t) over bar (R) and t(R)(t) over bar (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) over bar, as well as their spin correlation for arbitrary axes. This work is supported by the Spanish Research Agency (Agencia Estatal de Investigacion) through the grant IFT Centro de Excelencia Severo Ochoa SEV-2016-0597, by the projects PID2019-110058GB-C21, PID2019-110058GB-C22 from MICINN/AEI/ERDF, and by projects CERN/FIS-PAR/0004/2019, CERN/FIS-PAR/0029/2019 from FCT. The work of P.M.R. is supported through the FPI grant BES-2016-076775. The work of M.C.N.F. was supported by the PSC-CUNY Awards 63096-00 51 and 64031-00 52.