Search for Top-Quark Partners with Charge 5/3 in the Same-Sign Dilepton Final State

CMS Collaboration

doi:10.1103/PhysRevLett.112.171801

Search for Top-Quark Partners with Charge 5/3 in the Same-Sign Dilepton Final State

CMS Collaboration

Research output: Contribution to journal › Article › Research › peer-review

92 Citations (Scopus)

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 √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.

Original language	English
Article number	171801
Number of pages	16
Journal	Physical Review Letters
Volume	112
Issue number	17
DOIs	https://doi.org/10.1103/PhysRevLett.112.171801
Publication status	Published - 2014
Externally published	Yes

Keywords

Models
Vector-like quarks
Composite materials

Access to Document

10.1103/PhysRevLett.112.171801

226069799-oaFinal published version, 388 KB

Cite this

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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 √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.",

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