# Search for single production of scalar leptoquarks in proton-proton collisions at sqrt(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. A data sample of proton-proton collisions at center-of-mass energy sqrt(s) = 8 TeV recorded with the CMS detector corresponds to an integrated luminosity of 19.6 inverse-femtobarns. 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.
Document type :
Journal articles

http://hal.in2p3.fr/in2p3-01199145
Contributor : Sylvie Flores <>
Submitted on : Tuesday, September 15, 2015 - 7:33:28 AM
Last modification on : Friday, June 5, 2020 - 10:52:08 AM

### Citation

V. Khachatryan, M. Besançon, F. Couderc, M. Dejardin, D. Denegri, et al.. Search for single production of scalar leptoquarks in proton-proton collisions at sqrt(s) = 8 TeV. Physical Review D, American Physical Society, 2016, 93, pp.032005. ⟨10.1103/PhysRevD.93.032005⟩. ⟨in2p3-01199145⟩

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