Electroweak Corrections to the Neutralino Pair Production at CERN LHC

TL;DR

This paper calculates electroweak corrections to neutralino pair production at the LHC, showing that these corrections significantly impact cross-section predictions and are essential for precise experimental measurements.

Contribution

It provides a detailed analysis of electroweak corrections to neutralino pair production, including their dependence on energy and model parameters, which was not comprehensively addressed before.

Findings

Electroweak corrections can reach tens of percent at higher energies.

Corrections depend on center-of-mass energy, mass parameters, and squark masses.

Including EW corrections is crucial for accurate neutralino production measurements.

Abstract

We apply the leading and sub-leading electroweak (EW) corrections to the Drell-Yan process of the neutralino pair production at proton-proton collision, in order to calculate the effects of the these corrections on the neutralino pair production at the LHC. We provide an analysis of the dependence of the Born cross-sections for $pp\rightarrow\widetilde\chi_{i}^{0}\widetilde\chi_{j}^{0}$ and the EW corrections to this process, on the center-of-mass energy $\sqrt s$, on the $M_2$-$\mu$ mass plane and on the squark mass for the three different scenarios. The numerical results show that the relative correction can be reached the few tens of percent level as the increment of the center-of-mass energy, and the evaluation of EW corrections is a crucial task for all accurate measurements of the neutralino pair production processes.