Measurement of angular coefficients in Z → e−e+ process in the high mass region

Measurements on LHC allow tests of electroweak corrections and can be used to improve the precision of them. Different Monte Carlo generators implement higher order electroweak corrections with different precision and assumptions. With analyzing the angular distributions of the Drell-Yan e+e− pairs we can test the accuracy of these corrections. Electroweak corrections have a large effect on the Z-boson invariant mass distribution in particular above twice the W-mass where multi-gauge boson production becomes large. The goal of the project is to validate of these tools to be able to achieve higher precision at the LHC. This note presents a measurement of the complete set of angular coefficients describing these distributions in the Z-boson rest frame.