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  4. Search for a W′ boson decaying to a vector-like quark and a top or bottom quark in the all-jets final state
 
research article

Search for a W′ boson decaying to a vector-like quark and a top or bottom quark in the all-jets final state

Sirunyan, Albert M
•
Tumasyan, Armen
•
Adam, Wolfgang
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March 22, 2019
Journal of High Energy Physics

A search for a heavy W′ resonance decaying to one B or T vector-like quark and a top or bottom quark, respectively, is presented. The search uses proton-proton collision data collected in 2016 with the CMS detector at the LHC, corresponding to an integrated luminosity of 35.9 fb$^{−1}$ at $ \sqrt{s}=13 $ TeV. Both decay channels result in a final state with a top quark, a Higgs boson, and a b quark, each produced with significant energy. The all-hadronic decays of both the Higgs boson and the top quark are considered. The final-state jets, some of which correspond to merged decay products of a boosted top quark and a Higgs boson, are selected using jet substructure techniques, which help to suppress standard model backgrounds. A W′ boson signal would appear as a narrow peak in the invariant mass distribution of these jets. No significant deviation in data with respect to the standard model background predictions is observed. Cross section upper limits on W′ boson production in the top quark, Higgs boson, and b quark decay mode are set as a function of the W′ mass, for several vector-like quark mass hypotheses. These are the first limits for W′ boson production in this decay channel, and cover a range of 0.01 to 0.43 pb in the W′ mass range between 1.5 and 4.0 TeV.

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Type
research article
DOI
10.1007/JHEP03(2019)127
ArXiv ID

1811.07010

Author(s)
Sirunyan, Albert M
Tumasyan, Armen
Adam, Wolfgang
Ambrogi, Federico
Asilar, Ece
Bergauer, Thomas
Brandstetter, Johannes
Dragicevic, Marko
Erö, Janos
Escalante Del Valle, Alberto
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Date Issued

2019-03-22

Publisher

Springer Nature

Published in
Journal of High Energy Physics
Start page

127

Subjects

p p: scattering

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p p: colliding beams

•

W': mass

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boson: hadroproduction

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W': production

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quark: vector particle

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quark: mass

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top: boosted particle

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final state: ((n)jet)

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bottom: decay modes

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channel cross section: upper limit

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mass dependence

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Higgs particle: hadroproduction

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bottom: hadroproduction

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top: hadroproduction

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background

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CERN LHC Coll

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mass spectrum: (top Higgs particle bottom)

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structure

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shape analysis: jet

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4/3

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CMS

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experimental results

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13000 GeV-cms

Note

This article is licensed under a Creative Commons Attribution 4.0 International License

Editorial or Peer reviewed

REVIEWED

Written at

OTHER

EPFL units
LPHE  
Available on Infoscience
February 17, 2020
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/166125
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