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Search for pair production of first- and second-generation scalar leptoquarks in pp collisions at √s=7  TeV

(CMS Collaboration) Chatrchyan, S.; Brigljević, Vuko; Đurić, Senka; Kadija, Krešo; Luetić, Jelena; Morović, Srećko (2012) Search for pair production of first- and second-generation scalar leptoquarks in pp collisions at √s=7  TeV. Physical Review D, 86 (5). 052013/1-052013/23. ISSN 1550-7998

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Abstract

Results are presented from a search for the pair production of first- and second-generation scalar leptoquarks in proton-proton collisions at √s=7  TeV. The data sample corresponds to an integrated luminosity of 5.0  fb-1, collected by the CMS detector at the LHC. The search signatures involve either two charged leptons of the same flavor (electrons or muons) and at least two jets or a single charged lepton (electron or muon), missing transverse energy, and at least two jets. If the branching fraction of the leptoquark decay into a charged lepton and a quark is assumed to be β=1, leptoquark pair production is excluded at the 95% confidence level for masses below 830 GeV and 840 GeV for the first and second generations, respectively. For β=0.5, masses below 640 GeV and 650 GeV are excluded. These limits are the most stringent to date.

Item Type: Article
Uncontrolled Keywords: generation; constraints; mass
Subjects: NATURAL SCIENCES > Physics
NATURAL SCIENCES > Physics > Physics of Elementary Particles and Fields
NATURAL SCIENCES > Physics > Astronomy and Astrophysics
Divisions: Division of Experimental Physics
Projects:
Project titleProject leaderProject codeProject type
Eksperimentalna fizika na LHC energijama[93132] Krešo Kadija098-0982887-2878MZOS
Depositing User: Krešo Kadija
Date Deposited: 13 Sep 2013 12:50
Last Modified: 03 Feb 2016 15:00
URI: http://fulir.irb.hr/id/eprint/603
DOI: 10.1103/PhysRevD.86.052013

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