Search for third-generation vector-like leptons in pp collisions at √s = 13 TeV with the ATLAS detector

G. Aad; T.P.A. Åkesson; E.E. Corrigan; C. Doglioni; P.A. Ekman; J. Geisen; V. Hedberg; H. Herde; G. Jarlskog; B. Konya; E. Lytken; J.U. Mjörnmark; G.A. Mullier; R. Poettgen; N.D. Simpson; E. Skorda; O. Smirnova; L. Zwalinski; ATLAS Collaboration

doi:10.1007/JHEP07(2023)118

Search for third-generation vector-like leptons in pp collisions at √s = 13 TeV with the ATLAS detector

G. Aad, T.P.A. Åkesson, E.E. Corrigan, C. Doglioni, P.A. Ekman, J. Geisen, V. Hedberg, H. Herde, G. Jarlskog, B. Konya, E. Lytken, J.U. Mjörnmark, G.A. Mullier, R. Poettgen, N.D. Simpson, E. Skorda, O. Smirnova, L. Zwalinski, ATLAS Collaboration

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Abstract

A search for vector-like leptons in multilepton (two, three, or four-or-more electrons plus muons) final states with zero or more hadronic τ-lepton decays is presented. The search is performed using a dataset corresponding to an integrated luminosity of 139 fb−1 of proton-proton collisions at a centre-of-mass energy of 13 TeV recorded by the ATLAS detector at the LHC. To maximize the separation of signal and background, a machine-learning classifier is used. No excess of events is observed beyond the Standard Model expectation. Using a doublet vector-like lepton model, vector-like leptons coupling to third-generation Standard Model leptons are excluded in the mass range from 130 GeV to 900 GeV at the 95% confidence level, while the highest excluded mass is expected to be 970 GeV. [Figure not available: see fulltext.]. © 2023, The Author(s).

Original language	English
Article number	118
Journal	Journal of High Energy Physics
Volume	2023
Issue number	7
DOIs	https://doi.org/10.1007/JHEP07(2023)118
Publication status	Published - 2023

Subject classification (UKÄ)

Subatomic Physics

Free keywords

Beyond Standard Model
Hadron-Hadron Scattering
Tau Physics

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10.1007/JHEP07(2023)118

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Aad, G., Åkesson, T. P. A., Corrigan, E. E., Doglioni, C., Ekman, P. A., Geisen, J., Hedberg, V., Herde, H., Jarlskog, G., Konya, B., Lytken, E., Mjörnmark, J. U., Mullier, G. A., Poettgen, R., Simpson, N. D., Skorda, E., Smirnova, O., Zwalinski, L., & ATLAS Collaboration (2023). Search for third-generation vector-like leptons in pp collisions at √s = 13 TeV with the ATLAS detector. Journal of High Energy Physics, 2023(7), Article 118. https://doi.org/10.1007/JHEP07(2023)118

@article{21af682612e042839ed3c296edf63958,

title = "Search for third-generation vector-like leptons in pp collisions at √s = 13 TeV with the ATLAS detector",

abstract = "A search for vector-like leptons in multilepton (two, three, or four-or-more electrons plus muons) final states with zero or more hadronic τ-lepton decays is presented. The search is performed using a dataset corresponding to an integrated luminosity of 139 fb−1 of proton-proton collisions at a centre-of-mass energy of 13 TeV recorded by the ATLAS detector at the LHC. To maximize the separation of signal and background, a machine-learning classifier is used. No excess of events is observed beyond the Standard Model expectation. Using a doublet vector-like lepton model, vector-like leptons coupling to third-generation Standard Model leptons are excluded in the mass range from 130 GeV to 900 GeV at the 95% confidence level, while the highest excluded mass is expected to be 970 GeV. [Figure not available: see fulltext.]. {\textcopyright} 2023, The Author(s).",

keywords = "Beyond Standard Model, Hadron-Hadron Scattering, Tau Physics",

author = "G. Aad and T.P.A. {\AA}kesson and E.E. Corrigan and C. Doglioni and P.A. Ekman and J. Geisen and V. Hedberg and H. Herde and G. Jarlskog and B. Konya and E. Lytken and J.U. Mj{\"o}rnmark and G.A. Mullier and R. Poettgen and N.D. Simpson and E. Skorda and O. Smirnova and L. Zwalinski and {ATLAS Collaboration}",

year = "2023",

doi = "10.1007/JHEP07(2023)118",

language = "English",

volume = "2023",

journal = "Journal of High Energy Physics",

issn = "1029-8479",

publisher = "Springer",

number = "7",

}

Aad, G, Åkesson, TPA, Corrigan, EE, Doglioni, C, Ekman, PA, Geisen, J, Hedberg, V , Herde, H , Jarlskog, G , Konya, B , Lytken, E, Mjörnmark, JU, Mullier, GA, Poettgen, R, Simpson, ND, Skorda, E, Smirnova, O, Zwalinski, L & ATLAS Collaboration 2023, 'Search for third-generation vector-like leptons in pp collisions at √s = 13 TeV with the ATLAS detector', Journal of High Energy Physics, vol. 2023, no. 7, 118. https://doi.org/10.1007/JHEP07(2023)118

TY - JOUR

T1 - Search for third-generation vector-like leptons in pp collisions at √s = 13 TeV with the ATLAS detector

AU - Aad, G.

AU - Åkesson, T.P.A.

AU - Corrigan, E.E.

AU - Doglioni, C.

AU - Ekman, P.A.

AU - Geisen, J.

AU - Hedberg, V.

AU - Herde, H.

AU - Jarlskog, G.

AU - Konya, B.

AU - Lytken, E.

AU - Mjörnmark, J.U.

AU - Mullier, G.A.

AU - Poettgen, R.

AU - Simpson, N.D.

AU - Skorda, E.

AU - Smirnova, O.

AU - Zwalinski, L.

AU - ATLAS Collaboration

PY - 2023

Y1 - 2023

N2 - A search for vector-like leptons in multilepton (two, three, or four-or-more electrons plus muons) final states with zero or more hadronic τ-lepton decays is presented. The search is performed using a dataset corresponding to an integrated luminosity of 139 fb−1 of proton-proton collisions at a centre-of-mass energy of 13 TeV recorded by the ATLAS detector at the LHC. To maximize the separation of signal and background, a machine-learning classifier is used. No excess of events is observed beyond the Standard Model expectation. Using a doublet vector-like lepton model, vector-like leptons coupling to third-generation Standard Model leptons are excluded in the mass range from 130 GeV to 900 GeV at the 95% confidence level, while the highest excluded mass is expected to be 970 GeV. [Figure not available: see fulltext.]. © 2023, The Author(s).

AB - A search for vector-like leptons in multilepton (two, three, or four-or-more electrons plus muons) final states with zero or more hadronic τ-lepton decays is presented. The search is performed using a dataset corresponding to an integrated luminosity of 139 fb−1 of proton-proton collisions at a centre-of-mass energy of 13 TeV recorded by the ATLAS detector at the LHC. To maximize the separation of signal and background, a machine-learning classifier is used. No excess of events is observed beyond the Standard Model expectation. Using a doublet vector-like lepton model, vector-like leptons coupling to third-generation Standard Model leptons are excluded in the mass range from 130 GeV to 900 GeV at the 95% confidence level, while the highest excluded mass is expected to be 970 GeV. [Figure not available: see fulltext.]. © 2023, The Author(s).

KW - Beyond Standard Model

KW - Hadron-Hadron Scattering

KW - Tau Physics

U2 - 10.1007/JHEP07(2023)118

DO - 10.1007/JHEP07(2023)118

M3 - Article

SN - 1029-8479

VL - 2023

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 7

M1 - 118

ER -

Search for third-generation vector-like leptons in pp collisions at √s = 13 TeV with the ATLAS detector

Abstract

Subject classification (UKÄ)

Free keywords

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Cite this