SUSY parameter determination at the LHC using cross sections and kinematic edges

TL;DR

This paper explores how combining cross sections and kinematic edges can improve the determination of supersymmetric parameters at the LHC, especially in early data phases and more general models.

Contribution

It demonstrates that including cross section data significantly enhances the accuracy of SUSY parameter extraction at the LHC.

Findings

Cross sections improve parameter accuracy

Early LHC data can constrain SUSY models

Cross sections help distinguish non-universal scenarios

Abstract

We study the determination of supersymmetric parameters at the LHC from a global fit including cross sections and edges of kinematic distributions. For illustration, we focus on a minimal supergravity scenario and discuss how well it can be constrained at the LHC operating at 7 and 14 TeV collision energy, respectively. We find that the inclusion of cross sections greatly improves the accuracy of the SUSY parameter determination, and allows to reliably extract model parameters even in the initial phase of LHC data taking with 7 TeV collision energy and 1/fb integrated luminosity. Moreover, cross section information may be essential to study more general scenarios, such as those with non-universal gaugino masses, and distinguish them from minimal, universal, models.