Search for Resonant Top-Antitop Production in the Lepton Plus Jets Decay Mode Using the Full CDF Data Set - INSPIRE

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Search for Resonant Top-Antitop Production in the Lepton Plus Jets Decay Mode Using the Full CDF Data Set

CDF

Collaboration

•

T. Aaltonen
(
- Helsinki Inst. of Phys.
)

Nov, 2012

8 pages

Published in:

Phys.Rev.Lett. 110 (2013) 12, 121802

Published: Mar 20, 2013

e-Print:

1211.5363 [hep-ex]

DOI:

10.1103/PhysRevLett.110.121802

PDG: Limits for other

{{\mathit Z}^{\,'}}

Report number:

FERMILAB-PUB-12-611-E,
CDF-10906

Experiments:

FNAL-E-0830

View in:

reference search45 citations

Citations per year

Abstract: (APS)

This Letter reports a search for a narrow resonant state decaying into two W bosons and two b quarks where one W boson decays leptonically and the other decays into a quark-antiquark pair. The search is particularly sensitive to top-antitop resonant production. We use the full data sample of proton-antiproton collisions at a center-of-mass energy of 1.96 TeV collected by the CDF II detector at the Fermilab Tevatron, corresponding to an integrated luminosity of 9.45 fb-1. No evidence for resonant production is found, and upper limits on the production cross section times branching ratio for a narrow resonant state are extracted. Within a specific benchmark model, we exclude a Z′ boson with mass, MZ′, below 915 GeV/c2 decaying into a top-antitop pair at the 95% credibility level assuming a Z′ boson decay width of ΓZ′=0.012MZ′. This is the most sensitive search for a narrow qq¯-initiated tt¯ resonance in the mass region below 750 GeV/c2.

13.85.Rm
14.80.Tt
14.65.Ha
14.70.Pw
narrow resonance
W: decay modes
Z': width
top: pair production
anti-p p: scattering
CDF

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Figures(4)

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