Search for Resonant $t\bar{t}$ Production in Lepton+Jets Events in $pp$ Collisions at $\sqrt{s}=7$ TeV - INSPIRE

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Search for Resonant $t\bar{t}$ Production in Lepton+Jets Events in $pp$ Collisions at $\sqrt{s}=7$ TeV

CMS

Collaboration

Sep, 2012

37 pages

Published in:

JHEP 12 (2012) 015

e-Print:

1209.4397 [hep-ex]

DOI:

10.1007/JHEP12(2012)015

PDG: Heavy Particle Production Cross Section

Report number:

CMS-TOP-12-017,
CERN-PH-EP-2012-264

Experiments:

CERN-LHC-CMS

View in:

reference search88 citations

Citations per year

Abstract: (arXiv)

A model-independent search for the production of heavy resonances decaying into top-antitop quark pairs is presented. The search is based on events containing one lepton (muon or electron) and at least two jets selected from data samples corresponding to an integrated luminosity of 4.4-5.0 inverse femtobarns collected in pp collisions at sqrt(s) = 7 TeV. Results are presented from the combination of two dedicated searches optimized for boosted production and production at threshold. No excess of events is observed over the expected yield from the standard model processes. Topcolor Z' bosons with narrow (wide) width are excluded at 95% confidence level for masses below 1.49 (2.04) TeV and an upper limit of 0.3 (1.3) pb or lower is set on the production cross section times branching fraction for resonance masses above 1 TeV. Kaluza-Klein excitations of a gluon with masses below 1.82 TeV (at 95% confidence level) in the Randall-Sundrum model are also excluded, and an upper limit of 0.7 pb or lower is set on the production cross section times branching fraction for resonance masses above 1 TeV.

Note:

Replaced with published version. Added journal reference and DOI

resonance: mass
top: pair production
gluon: Kaluza-Klein
p p: scattering
Randall-Sundrum model
CERN LHC Coll
mass spectrum: (top anti-top)
Z'
topcolor
CMS

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