The Process of the Z-Boson Decay into Two Leptons and Photon and Charge Asymmetry

Abstract

The paper is devoted to the interpretation of experimental data from the ATLAS detector on the decay of the Z-boson into two leptons and photon. The main interest is in the distribution over the lepton and photon invariant mass. In this paper, we compare it with another modern generator that includes electroweak corrections—ReneSANCe. We consider the experimentally obtained asymmetry between the distributions of the invariant masses \(M(l^{+}\gamma)\) and \(M(l^{{-}}\gamma)\) and compare it with the result from ReneSANCe. We also propose taking into account previously measured angular coefficients to improve the description of the initial state of the Z-boson, produced in pp collisions.