Search for Top-Quark Partners With Charge 5/3 in the Same-Sign Dilepton Final State
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Date
2014
Authors
Karapınar, Güler
Journal Title
Journal ISSN
Volume Title
Publisher
American Physical Society
Open Access Color
HYBRID
Green Open Access
Yes
OpenAIRE Downloads
67
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51
Publicly Funded
Yes
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Top 1%
Influence
Top 10%
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Top 10%
Abstract
A search for the production of heavy partners of the top quark with charge 5/3 is performed in events with a pair of same-sign leptons. The data sample corresponds to an integrated luminosity of 19.5 fb(-1) and was collected at root s = 8 TeV by the CMS experiment. No significant excess is observed in the data above the expected background, and the existence of top-quark partners with masses below 800 GeV is excluded at a 95% confidence level, assuming they decay exclusively to tW. This is the first limit on these particles from the LHC, and it is significantly more restrictive than previous limits.
Description
PubMed: 24836237
Keywords
550, same sign [dilepton], interaction [p p], ATLAS DETECTOR, exotic: pair production [quark], Nuclear Physic, PARTICLE PHYSICS; LARGE HADRON COLLIDER; CMS, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), Theoretical, Models, CERN, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], info:eu-repo/classification/ddc/530, p p: interaction, 8000 GeV-cms, [Anahtar Kelime Yok], dilepton: same sign, CMS, Physics, dilepton: final state, ddc:530, Nuclear Physics; Elementary Particles; Models, Theoretical; Physics and Astronomy (all), 001, COUPLINGS, new particle: search for, channel cross section: branching ratio: upper limit, quark --> top W+, CERN LHC Coll, lower limit [mass], Particle Physics, LHC, CMS, Top Quark, Physique des particules élémentaires, LHC; CMS; HEP, PARTICLE PHYSICS, LHC, charge: 5/3, multiplicity [jet], physics, signature, Dileptons, Elementary Particles, 5/3 [charge], CERN; CMS; New Physics; Charge; Dileptons, New Physics, cms, Atlas detector, mass: lower limit, Elementary Particle, Nuclear Physics; Elementary Particles; Models, Theoretical; Medicine (all); Physics and Astronomy (all), FOS: Physical sciences, jet: multiplicity, search for [new particle], W --> lepton neutrino, 530, Charge, quark: exotic: pair production, Physics and Astronomy (all), final state [dilepton], Higgs-boson, ATLAS DETECTOR; HIGGS-BOSON; LHC; COUPLINGS, Nuclear Physics, branching ratio: upper limit [channel cross section], info:eu-repo/classification/ddc/550, background, Models, Theoretical, Top quark, LARGE HADRON COLLIDER, QC Physics / fizika, Couplings, top --> W+ bottom, HIGGS-BOSON, experimental results
Fields of Science
01 natural sciences, 0103 physical sciences
Citation
WoS Q
Q1
Scopus Q
Q1
Source
Physical Review Letters
Volume
112
Issue
17
Start Page
End Page
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