17–24 Jul 2024
Prague
Europe/Prague timezone

Realistic extraction of polarisation and spin-correlation coefficients in di-boson processes at the LHC

20 Jul 2024, 12:15
15m
Club E

Club E

Parallel session talk 04. Top Quark and Electroweak Physics Top Quark and Electroweak Physics

Speaker

Dr Michele Grossi (CERN)

Description

As shown by recent theoretical and experimental developments, the Standard Model of fundamental interactions can be tested at collider with the lens of quantum information theory. To achieve this aim it is essential to establish a relation between the kinematical distribution of stable, detectable particles and the spin-density matrix.
In the realistic simulation it is unavoidable to impose acceptance cuts on the kinematics of final-state particles, leading to a partial loss of information necessary to reconstruct the spin-density matrix of underlying resonances.
In this work we study the impact of acceptance cuts and higher-order corrections on the extraction of polarisation and spin-correlation coefficients in di-boson production at the LHC with leptonic decays. We investigate a purely geometrical factor which can accurately compensate for acceptance effects. The application of this factor allows to obtain a clean interpretation of diboson LHC events directly starting from the data.

Alternate track 14. Computing, AI and Data Handling
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Authors

Alessandro Vicini (Università degli Studi e INFN Milano (IT)) Giovanni Pelliccioli (Max-Planck-Institut für Physik) Dr Michele Grossi (CERN)

Presentation materials