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Search for single production of scalar leptoquarks in proton-proton collisions at √s = 8 TeV

Search for single production of scalar leptoquarks in proton-proton collisions at √s = 8 TeV
Search for single production of scalar leptoquarks in proton-proton collisions at √s = 8 TeV
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.
2470-0010
Khachatryan, Vardan
375bcfe5-df1a-41ad-9a90-553e557ef6d6
Belyaev, Alexander
6bdb9638-5ff9-4b65-a8f2-34bae3ac34b3
The CMS Collaboration
Khachatryan, Vardan
375bcfe5-df1a-41ad-9a90-553e557ef6d6
Belyaev, Alexander
6bdb9638-5ff9-4b65-a8f2-34bae3ac34b3

The CMS Collaboration (2016) Search for single production of scalar leptoquarks in proton-proton collisions at √s = 8 TeV. Physical Review D, 93 (3), [032005]. (doi:10.1103/PhysRevD.93.032005).

Record type: Article

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.

Text
PhysRevD.93.032005 - Version of Record
Available under License Creative Commons Attribution.
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More information

e-pub ahead of print date: 24 February 2016
Additional Information: [Erratum: Phys. Rev.D95,no.3,039906(2017)]
Organisations: Physics & Astronomy

Identifiers

Local EPrints ID: 408738
URI: http://eprints.soton.ac.uk/id/eprint/408738
ISSN: 2470-0010
PURE UUID: 6a077b76-c9eb-48ab-b7d6-9cd38cda9b78
ORCID for Alexander Belyaev: ORCID iD orcid.org/0000-0002-1733-4408

Catalogue record

Date deposited: 27 May 2017 04:03
Last modified: 17 Dec 2019 01:44

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