Search for single production of scalar leptoquarks in proton-proton collisions at √{s }=8 TeV
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.
- Publication:
-
Physical Review D
- Pub Date:
- February 2016
- DOI:
- 10.1103/PhysRevD.93.032005
- arXiv:
- arXiv:1509.03750
- Bibcode:
- 2016PhRvD..93c2005K
- Keywords:
-
- High Energy Physics - Experiment
- E-Print:
- Replaced with published version. All figures and tables can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/EXO-12-043/index.html