Search for first generation scalar leptoquarks in the eνjj channel in pp collisions at √s=7 TeV
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol.703, no.3, pp.246-266, 2011 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 703 Issue: 3
- Publication Date: 2011
- Doi Number: 10.1016/j.physletb.2011.07.089
- Journal Name: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Page Numbers: pp.246-266
- Keywords: CMS, Exotica, Leptoquarks, LHC, Physics
- Yıldız Technical University Affiliated: No
Abstract
A search for pair-production of first generation scalar leptoquarks is performed in the final state containing an electron, a neutrino, and at least two jets using proton-proton collision data at √s=7 TeV. The data were collected by the CMS detector at the LHC, corresponding to an integrated luminosity of 36 pb-1. The number of observed events is in good agreement with the predictions for standard model processes. Prior CMS results in the dielectron channel are combined with this electron+neutrino search. A 95% confidence level combined lower limit is set on the mass of a first generation scalar leptoquark at 339 GeV for β=0.5, where β is the branching fraction of the leptoquark to an electron and a quark. These results represent the most stringent direct limits to date for values of β greater than 0.05. © 2011 CERN.