Search for physics beyond the standard model in events with two leptons, jets, and missing transverse momentum in pp collisions at sqrt(s) = 8 TeV

TL;DR

This paper reports a search for new physics beyond the standard model using 8 TeV proton-proton collision data, focusing on events with two leptons, jets, and missing energy, but finds no significant deviations.

Contribution

It introduces a search strategy for supersymmetric particles involving invariant mass edges and Z boson signatures in LHC data at 8 TeV.

Findings

No evidence of new physics observed.

Set upper limits on supersymmetric particle production.

Consistent with standard model predictions.

Abstract

A search is presented for physics beyond the standard model in final states with two opposite-sign same-flavor leptons, jets, and missing transverse momentum. The data sample corresponds to an integrated luminosity of 19.4 inverse femtobarns of proton-proton collisions at sqrt(s) = 8 TeV collected with the CMS detector at the CERN LHC in 2012. The analysis focuses on searches for a kinematic edge in the invariant mass distribution of the opposite-sign same-flavor lepton pair and for final states with an on-shell Z boson. The observations are consistent with expectations from standard model processes and are interpreted in terms of upper limits on the production of supersymmetric particles.