Examining the Identity of Yukawa with Gauge Couplings in Supersymmetric QCD at LHC

Abstract

The identity of the quark-squark-gluino Yukawa coupling with the corresponding quark-quark-gluon QCD coupling in supersymmetric theories can be examined experimentally at the Large Hadron Collider (LHC). Extending earlier investigations of like-sign di-lepton final states, we include jets in the analysis of the minimal supersymmetric standard model, adding squark-gluino and gluino-pair production to squark-pair production. Moreover we expand the method towards model-independent analyses which cover more general scenarios. In all cases, squark decays to light charginos and neutralinos persist to play a dominant role.

Comments: 16 pp; v2: branching ratios and event rates adjusted, due to an error in the implementation of the SUSY Les Houches Accord in Pythia (corrected meanwhile), conclusions unchanged