https://doi.org/10.1140/epjc/s10052-015-3281-4
Regular Article - Theoretical Physics
The higgsino–singlino world at the large hadron collider
1
Instituto de Fisica Teorica UAM/CSIC, Universidad Autonoma de Madrid, C/ Nicolas Cabrera 13-15, Cantoblanco, 28049, Madrid, Spain
2
ARC Centre of Excellence for Particle Physics at the Terascale, School of Physics, University of Melbourne, Melbourne, VIC, 3010, Australia
* e-mail: tsray@phy.iitkgp.ernet.in
Received:
30
October
2014
Accepted:
20
January
2015
Published online:
3
February
2015
We consider light higgsinos and singlinos in the next-to-minimal supersymmetric standard model at the large hadron collider. We assume that the singlino is the lightest supersymmetric particle and that the higgsino is the next-to-lightest supersymmetric particle with the remaining supersymmetric particles in the multi-TeV range. This scenario, which is motivated by the flavor and CP issues, provides a phenomenologically viable dark matter candidate and improved electroweak fit consistent with the measured Higgs mass. Here, the higgsinos decay into on (off)-shell gauge boson and the singlino. We consider the leptonic decay modes and the resulting signature is three isolated leptons and missing transverse energy which is known as the trilepton signal. We simulate the signal and the Standard Model backgrounds and present the exclusion region in the higgsino–singlino mass plane at the large hadron collider at TeV for an integrated luminosity of 300 fb
.
© SIF and Springer-Verlag Berlin Heidelberg, 2015