Experimental methods to measure Standard Model backgrounds to new physics searches using the CMS experiment at the Large Hadron Collider.

摘要

The Large Hadron Collider at CERN in Geneva, Switzerland will produce proton-proton collisions of higher energy than ever before achieved an a laboratory. This thesis describes some of the experimental aspects of hadron collider physics, including the construction of the CMS detector which used to observe the collisions, and the interpretation of measurement results in light of challenging backgrounds. The focus of this this document is the development of a method to use high energy photon events in collider data to estimate the invisible Z background to a search for supersymmetric particles in the MET plus jets topology. A detailed study of the mechanisms by which quark and gluon scattering events can produce the signatures of electrons is presented. The process of the construction of the outer barrel of the silicon charged-particle tracker of CMS is described.