Özet

In this paper we describe a search for supersymmetry (SUSY) in final states with a single electron or muon, multiple jets, including some identified as originating from b quarks (b jets), and missing transverse energy. The search is based on the full set of data recorded with the Compact Muon Solenoid (CMS) experiment in proton-proton collisions at a center-of-mass energy of ffiffiffi s p ¼ 7 TeV during 2011, which corresponds to an integrated luminosity of 4: 98 Æ 0: 11 fb À1. The search for new-physics phenomena in events with third-generation quarks at the Large Hadron Collider (LHC) is motivated by various extensions [1–5] of the standard model (SM). Among these, supersymmetric models are regarded as attractive, because they can resolve the hierarchy problem and may permit the unification of the electroweak and strong interactions [6–10]. Supersymmetry predicts that for each particle in the SM there exists a partner particle, often referred to as a sparticle, with identical gauge quantum numbers but with a spin that differs by 1= 2. Assuming R parity conservation [11], sparticles are produced in pairs, and their decay chains terminate with the lightest supersymmetric particle (LSP). In some scenarios the LSP is the lightest neutralino

Anahtar Kelimeler

Science Direct

Atıf Sayıları

CMS Collaboration