Testing the higgsino-singlino sector of the NMSSM with trileptons at the LHC

TL;DR

This paper introduces a simplified light higgsino-singlino model within the NMSSM, analyzing its implications for trilepton signals at the LHC and providing detailed mass and coupling data.

Contribution

It proposes a new simplified higgsino-singlino scenario in the NMSSM, with comprehensive mass and mixing angle tables for LHC trilepton search interpretation.

Findings

Scenario yields significant trilepton signal rates.

Constraints from recent LHC trilepton searches are applied.

Provides detailed mass and coupling data for the model.

Abstract

We propose a simplified light higgsino-singlino scenario in the NMSSM, in which the masses of the chargino and the lightest neutralino determine the masses and couplings of all 3 lightest neutralinos. This scenario is complementary to the simplified wino-like chargino/neutralino scenario used conventionally for the interpretation of results from trilepton searches, and motivated by lower bounds on the gluino mass in the case of GUT relations between the wino and gluino masses. We present all masses and mixing angles necessary for the determination of production cross sections of the chargino and the 3 neutralinos in the form of Tables in the M_{neutralino_1} - M_{chargino_1} plane, assuming Higgs mass motivated values for tan(beta)=2 and lambda=0.6. We show that this scenario leads to considerable signal rates, and present constraints in this plane from recent searches for trileptons at the LHC.