Search for single production of scalar leptoquarks in proton-proton collisions at s =8 TeV
Type :
Article
Publication Status :
published
Access :
restrictedAccess
Abstract
A search is presented for the production of both first- and second-generation scalar leptoquarks with a final state of either two electrons and one jet or two muons and one jet. The search is based on a data sample of proton-proton collisions at center-of-mass energy s√=8 TeV recorded with the CMS detector and corresponding to an integrated luminosity of 19.6 fb−1. Upper limits are set on both the first- and second-generation leptoquark production cross sections as functions of the leptoquark mass and the leptoquark couplings to a lepton and a quark. Results are compared with theoretical predictions to obtain lower limits on the leptoquark mass. At 95% confidence level, single production of first-generation leptoquarks with a coupling and branching fraction of 1.0 is excluded for masses below 1730 GeV, and second-generation leptoquarks with a coupling and branching fraction of 1.0 is excluded for masses below 530 GeV. These are the best overall limits on the production of first-generation leptoquarks to date.
Source :
Physical Review D - Particles, Fields, Gravitation and Cosmology
Date :
2016-02-01
URI
http://hdl.handle.net/10679/4102http://journals.aps.org/prd/abstract/10.1103/PhysRevD.93.032005
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