Description:

Title: "Search for SUSY in Opposite Sign (OS) di-lepton final states with Parked Data collected at √s = 8 TeV using the CMS detector"

Speaker: Saptaparna Bhattacharya
 

Abstract: The Large Hadron Collider (LHC) has had a very successful data-taking phase with Run 1. After the discovery of the Higgs, conrming the predictions of the Standard Model (SM), the focus is on nding new physics, specially in the context of supersymmetry (SUSY). One of the potential hiding places of natural SUSY is in models with compressed spectra, that is, models where the mass di
erence between the parent SUSY particle and the Lightest Supersymmetric Particle (LSP) is small. Such signals are characterized by low transverse momentum (pT ) objects, low hadronic activity and missing transverse energy (MET). In this talk, I will focus on di-lepton nal states, specically in the low pT regime. We use 7.4 fb1 of parked data collected at ps = 8 TeV. The analysis is enabled by the use of triggers that place no restrictions on the di-lepton pT , instead relying on methods like Initial State Radiation (ISR) tagging by triggering on a high pT photon, to reduce the trigger rate.