New limits on heavier electroweakinos and their LHC signatures

Abstract

We investigate the heavier electroweakino sectors in several versions of the MSSM, which has not been explored so far in the light of the LHC data, and obtain new bounds using the ATLAS Run I constraints in the 3l+E̸T channel. We also venture beyond the trilepton events and predict several novel multilepton+E̸T signatures of these electroweakinos which may show up during LHC Run II before the next long shutdown. These signals can potentially distinguish between various models with nondecoupled heavier electroweakinos and the much studied ones with decoupled heavier electroweakinos.