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

Loic Quertenmont; Vardan Khachatryan; Suzan Basegmez; Giacomo Luca Bruno; Julien Caudron; Ludivine Ceard; Eduardo Cortina Gil; Jérôme Favereau Jeneret; Christophe Delaere; Denis Favart; Laurent Forthomme; Andrea Giammanco; Ghislain Grégoire; Jonathan Hollar; Vincent Lemaitre; Junhui Liao; Otilia Militaru; Claude Nuttens; Séverine Ovyn; Davide Pagano; Arnaud Pin; Krzysztof Piotrzkowski; Nicolas Schul; CMS Collaboration

doi:10.1103/PhysRevLett.106.201802

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

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

Loic Quertenmont, Vardan Khachatryan, Suzan Basegmez, Giacomo Luca Bruno, Julien Caudron, Ludivine Ceard, Eduardo Cortina Gil, Jérôme Favereau Jeneret, Christophe Delaere, Denis Favart, …

Physical review letters, Vol.106(20), 201802

05/17/2011

DOI: 10.1103/PhysRevLett.106.201802

PMID: 21668220

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Abstract

A search for pair production of first-generation scalar leptoquarks is performed in the final state containing two electrons and two jets using proton-proton collision data at √s=7 TeV. The data sample used corresponds to an integrated luminosity of 33 pb−1 collected with the CMS detector at the CERN LHC. The number of observed events is in good agreement with the predictions for the standard model background processes, and an upper limit is set on the leptoquark pair production cross section times β2 as a function of the leptoquark mass, where β is the branching fraction of the leptoquark decay to an electron and a quark. A 95% confidence level lower limit is set on the mass of a first-generation scalar leptoquark at 384 GeV for β=1, which is the most stringent direct limit to date.

High Energy Physics

Particle Physics

Physics

Experiment

Física

Pair production

Photons

Physique des particules élémentaires

Proton proton collisions

Tellurium compounds

Upper limits

Details

Title: Subtitle: Search for pair production of first-generation scalar leptoquarks in pp collisions at √s=7TeV
Creators: Loic Quertenmont
Vardan Khachatryan
Suzan Basegmez - UCLouvain
Giacomo Luca Bruno - UCLouvain
Julien Caudron - UCLouvain
Ludivine Ceard - UCLouvain
Eduardo Cortina Gil
Jérôme Favereau Jeneret
Christophe Delaere - UCLouvain
Denis Favart - UCLouvain
Laurent Forthomme
Andrea Giammanco - UCLouvain
Ghislain Grégoire - UCLouvain
Jonathan Hollar - UCLouvain
Vincent Lemaitre - UCLouvain
Junhui Liao - UCLouvain
Otilia Militaru - UCLouvain
Claude Nuttens
Séverine Ovyn - UCLouvain
Davide Pagano - UCLouvain
Arnaud Pin - UCLouvain
Krzysztof Piotrzkowski - UCLouvain
Nicolas Schul - UCLouvain
CMS Collaboration
Contributors: C. R Newsom (Contributor) - University of Iowa, Physics and Astronomy
Y Onel (Contributor) - University of Iowa, Physics and Astronomy
Resource Type: Journal article
Publication Details: Physical review letters, Vol.106(20), 201802
DOI: 10.1103/PhysRevLett.106.201802
PMID: 21668220
NLM abbreviation: Phys Rev Lett
ISSN: 0031-9007
eISSN: 1079-7114
Publisher: American Physical Society
Grant note: 098-0982887-2878 / Ministry of Science, Education and Sports of the Republic of Croatia (MSES) (irb_hr______::MZOS)
Language: English
Date published: 05/17/2011
Academic Unit: Physics and Astronomy
Record Identifier: 9984199805502771

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