Probing new particles in proton-proton collisions with CMS Detector at the LHC

The Large Hadron Collider (LHC) is the world’s biggest and most powerful particle accelerator aimed to study the fundamental particles and their interactions. Although the underlying physics of fundamental particles is well explained by the Standard Model (SM) [1] and supported by experimental testing over the time, yet it is considered to be an effective theory up to some scale. SM has some serious shortcomings such as it fails to explain matter-antimatter asymmetry, Dark matter, the hierarchy problem, unification of fundamental forces, etc. To address these shortcomings, new theories/extensions of SM have evolved. One such popular beyond SM theory is called Super-Symmetry (SUSY). However, this theory requires the existence of a new set of particles called super-partners of SM particles, none of which has been found experimentally so far. The experimental confirmation of these new SUSY particles will provide solution to the hierarchy problem, unification of three fundamental forces and the dark matter candidate. Therefore, investigation of such particles at the TeV energy scale is a quite natural step. The hadron colliders are well suited to the task of exploring the new energy domains such as the region of 1 TeV constituent centerof-mass energy provided the proton energy and the luminosity are high enough. At the LHC, two counter-rotating high energy proton beams are made to cross and interact each other at four interaction points where different detectors are placed to record the collision events for the subsequent physics study. The Compact Muon Solenoid (CMS) detector [2] is placed at one of the interaction points and aims for the precision measurements of SM predictions as well as for the study of the new sectors of Beyond SM (BSM) physics. The work presented in this proceeding, is based on the search for SUSY particles using protonproton collision data at center-of-mass energy of 13 TeV recorded by the CMS detector at LHC.