Nonlinear Phenomena in Complex Systems, 2018, Vol.21, No.1, pp.30

NONLINEAR PHENOMENA IN COMPLEX SYSTEMS
An Interdisciplinary Journal

2018, Vol.21, No.1, pp.30 - 36

Influence of Z-Z' Mixing on Z' Production Cross Section in the Model-Independent Approach
A. O. Pevzner

A new module SMZp is developed for the Monte-Carlo generator Sherpa that extends simulations of the Standard model (SM) processes with the Abelian Z' boson in the modelindependent approach. Special derived earlier relations between the Z' couplings to the SM fields proper to the renormalizable theories are taken into account. Using this module, the dependence of the Z' production cross section on the Z − Z' mixing angle θ₀ in the Drell–Yan process is investigated within the range of 1 TeV ≤ m_Z' ≤ 5 TeV. It is shown that if it is essential to keep the Z' theory renormalizable, θ₀ cannot be neglected as it is often done, even if it is small.

Key words: new gauge Z' bosons, Monte-Carlo simulations, Sherpa, Drell–Yan process, Large Hadron Collider (LHC)

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