Study of double parton scattering in CMS experiment at large Hadron collider

Abstract

The experimental particle physics, with the start of Large Hadron Collider (LHC), enters a new era of research and advances many steps close to the understanding of matter and its constituents. The LHC has been designed to explore the Standard Model physics as well as the physics beyond Standard Model. The proton-proton collisions at the center-of-mass energy of 7 TeV marks the highest energy reached by a man-made particle collider in Year 2010-2011. During Year 2012-2013, the center-of-mass energy was increased to 8 TeV, followed by a Long Shut-down (LS-1) for the repair and upgradation of accelerators and detectors in Year 2013-14. The Run-II of the LHC started in 2015 with a remarkable reach of center-of-mass energy to 13 TeV. The Compact Muon Solenoid (CMS) detector is one of the general purpose detector at the LHC. The present thesis is based upon two different studies: Hardware study: Assembly and characterization of Resistive Plate Chambers (RPCs) for the Muon system of the CMS detector Physics analysis: Study of double parton scattering (DPS) using the W+2- jet events recorded by CMS detector. newline