Search for single-production of vector-like quarks decaying into Wb in the fully hadronic final state in pp collisions at s = 13 TeV with the ATLAS detector

Physics

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Experimental Particle Physics

Text available via DOI:

https://doi.org/10.1007/jhep02(2025)075
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Available under license: CC BY: Creative Commons Attribution 4.0 International License

Keywords

Vector-Like Quarks, Proton-Proton Scattering, Beyond Standard Model, Hadron-Hadron Scattering

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Research output: Contribution to Journal/Magazine › Journal article › peer-review

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Search for single-production of vector-like quarks decaying into Wb in the fully hadronic final state in pp collisions at s = 13 TeV with the ATLAS detector. / The ATLAS collaboration.
In: Journal of High Energy Physics, Vol. 2025, No. 2, 75, 12.02.2025.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Bibtex

@article{6301836bd54742b1a3e4bd14bbf37541,

title = "Search for single-production of vector-like quarks decaying into Wb in the fully hadronic final state in pp collisions at s = 13 TeV with the ATLAS detector",

abstract = "A search for T and Y vector-like quarks produced in proton-proton collisions at a centre-of-mass energy of 13 TeV and decaying into Wb in the fully hadronic final state is presented. The search uses 139 fb{\^a}ˆ{\textquoteright}1 of data collected by the ATLAS detector at the LHC from 2015 to 2018. The final state is characterised by a hadronically decaying W boson with large Lorentz boost and a b-tagged jet, which are used to reconstruct the invariant mass of the vector-like quark candidate. The main background is QCD multijet production, which is estimated using a data-driven method. Upon finding no significant excess in data, mass limits at 95% confidence level are obtained as a function of the global coupling parameter, {\^I}º. The observed lower limits on the masses of Y quarks with {\^I}º = 0.5 and {\^I}º = 0.7 are 2.0 TeV and 2.4 TeV, respectively. For T quarks, the observed mass limits are 1.4 TeV for {\^I}º = 0.5 and 1.9 TeV for {\^I}º = 0.7.",

keywords = "Vector-Like Quarks, Proton-Proton Scattering, Beyond Standard Model, Hadron-Hadron Scattering",

author = "{The ATLAS collaboration} and Hanadi Ali and Zainab Alsolami and A.E. Barton and G. Borissov and E.V. Bouhova-Thacker and Ruby Ferguson and James Ferrando and H. Fox and Alina Hagan and R.C.W. Henderson and R.W.L. Jones and V. Kartvelishvili and P.A. Love and E.J. Marshall and L. Meng and D. Muenstermann and Elliot Sampson and M. Smizanska and A.M. Wharton",

year = "2025",

month = feb,

day = "12",

doi = "10.1007/jhep02(2025)075",

language = "English",

volume = "2025",

journal = "Journal of High Energy Physics",

issn = "1029-8479",

publisher = "Springer-Verlag",

number = "2",

}

RIS

TY - JOUR

T1 - Search for single-production of vector-like quarks decaying into Wb in the fully hadronic final state in pp collisions at s = 13 TeV with the ATLAS detector

AU - The ATLAS collaboration

AU - Ali, Hanadi

AU - Alsolami, Zainab

AU - Barton, A.E.

AU - Borissov, G.

AU - Bouhova-Thacker, E.V.

AU - Ferguson, Ruby

AU - Ferrando, James

AU - Fox, H.

AU - Hagan, Alina

AU - Henderson, R.C.W.

AU - Jones, R.W.L.

AU - Kartvelishvili, V.

AU - Love, P.A.

AU - Marshall, E.J.

AU - Meng, L.

AU - Muenstermann, D.

AU - Sampson, Elliot

AU - Smizanska, M.

AU - Wharton, A.M.

PY - 2025/2/12

Y1 - 2025/2/12

N2 - A search for T and Y vector-like quarks produced in proton-proton collisions at a centre-of-mass energy of 13 TeV and decaying into Wb in the fully hadronic final state is presented. The search uses 139 fbâˆ’1 of data collected by the ATLAS detector at the LHC from 2015 to 2018. The final state is characterised by a hadronically decaying W boson with large Lorentz boost and a b-tagged jet, which are used to reconstruct the invariant mass of the vector-like quark candidate. The main background is QCD multijet production, which is estimated using a data-driven method. Upon finding no significant excess in data, mass limits at 95% confidence level are obtained as a function of the global coupling parameter, Îº. The observed lower limits on the masses of Y quarks with Îº = 0.5 and Îº = 0.7 are 2.0 TeV and 2.4 TeV, respectively. For T quarks, the observed mass limits are 1.4 TeV for Îº = 0.5 and 1.9 TeV for Îº = 0.7.

AB - A search for T and Y vector-like quarks produced in proton-proton collisions at a centre-of-mass energy of 13 TeV and decaying into Wb in the fully hadronic final state is presented. The search uses 139 fbâˆ’1 of data collected by the ATLAS detector at the LHC from 2015 to 2018. The final state is characterised by a hadronically decaying W boson with large Lorentz boost and a b-tagged jet, which are used to reconstruct the invariant mass of the vector-like quark candidate. The main background is QCD multijet production, which is estimated using a data-driven method. Upon finding no significant excess in data, mass limits at 95% confidence level are obtained as a function of the global coupling parameter, Îº. The observed lower limits on the masses of Y quarks with Îº = 0.5 and Îº = 0.7 are 2.0 TeV and 2.4 TeV, respectively. For T quarks, the observed mass limits are 1.4 TeV for Îº = 0.5 and 1.9 TeV for Îº = 0.7.

KW - Vector-Like Quarks

KW - Proton-Proton Scattering

KW - Beyond Standard Model

KW - Hadron-Hadron Scattering

U2 - 10.1007/jhep02(2025)075

DO - 10.1007/jhep02(2025)075

M3 - Journal article

VL - 2025

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

SN - 1029-8479

IS - 2

M1 - 75

ER -

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