Search for Pair Production of First-Generation Scalar Leptoquarks in $pp$ Collisions at $\sqrt{s}=7$ TeV - INSPIRE

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Search for Pair Production of First-Generation Scalar Leptoquarks in $pp$ Collisions at $\sqrt{s}=7$ TeV

CMS

Collaboration

Dec, 2010

24 pages

Published in:

Phys.Rev.Lett. 106 (2011) 201802

e-Print:

1012.4031 [hep-ex]

DOI:

10.1103/PhysRevLett.106.201802

PDG: Mass Limits for Leptoquarks from Pair Production

Report number:

CERN-PH-EP-2010-052,
CMS-EXO-10-005

Experiments:

CERN-LHC-CMS

View in:

reference search50 citations

Citations per year

Abstract: (arXiv)

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 sqrt(s)=7 TeV. The data sample used corresponds to an integrated luminosity of 33 inverse picobarns 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 beta^2 as a function of the leptoquark mass, where beta 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 beta=1, which is the most stringent direct limit to date.

13.85.Rm
14.80.Sv
12.60.-i
leptoquark: scalar
leptoquark: pair production
leptoquark: mass: lower limit
channel cross section: branching ratio: upper limit
leptoquark: decay
CERN LHC Coll
CMS

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Figures(4)

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