Search for new physics with same-sign isolated dilepton events with jets and missing transverse energy

TL;DR

This study searches for signs of new physics in events with same-sign dileptons, jets, and missing energy using CMS data, finding no deviations from the Standard Model and setting limits on new physics models.

Contribution

It provides the most extensive dataset to date for this search and offers detailed information to interpret results across various new physics scenarios.

Findings

No excess over Standard Model predictions observed

Set upper limits on new physics contributions

Constrain supersymmetric models

Abstract

A search for new physics is performed in events with two same-sign isolated leptons, hadronic jets, and missing transverse energy in the final state. The analysis is based on a data sample corresponding to an integrated luminosity of 4.98 inverse femtobarns produced in pp collisions at a center-of-mass energy of 7 TeV collected by the CMS experiment at the LHC. This constitutes a factor of 140 increase in integrated luminosity over previously published results. The observed yields agree with the standard model predictions and thus no evidence for new physics is found. The observations are used to set upper limits on possible new physics contributions and to constrain supersymmetric models. To facilitate the interpretation of the data in a broader range of new physics scenarios, information on the event selection, detector response, and efficiencies is provided.