Constraint on the total width of the Higgs boson from Higgs boson and four-top-quark measurements in pp collisions at s = 13 TeV with the ATLAS detector

ATLAS Collaboration; S. Alderweireldt; J.F. Allen; P. J.  Clark; J.R. Curran; D. Duda; S. M. Farrington; Y. Gao; J.M. Gargan; R.Y. Gonzalez Andana; C. Jiang; C. Leonidopoulos; M. Firdaus M. Soberi; V. J.  Martin; L. Mijović; V.A. Parrish; E.A. Pender; T. Qiu; J.M.  Silva; A.L. Sopio; F. Ustuner; E.M. Villhauer; H. Watson; B.M. Wynne; Z. Xu; E. Zaid

doi:10.1016/j.physletb.2025.139277

Constraint on the total width of the Higgs boson from Higgs boson and four-top-quark measurements in pp collisions at s = 13 TeV with the ATLAS detector

ATLAS Collaboration, S. Alderweireldt, J.F. Allen, P. J. Clark, J.R. Curran, D. Duda, S. M. Farrington, Y. Gao, J.M. Gargan, R.Y. Gonzalez Andana, C. Jiang, C. Leonidopoulos, M. Firdaus M. Soberi, V. J. Martin, L. Mijović, V.A. Parrish, E.A. Pender, T. Qiu, J.M. Silva, A.L. SopioF. Ustuner, E.M. Villhauer, H. Watson, B.M. Wynne, Z. Xu, E. Zaid

School of Physics and Astronomy

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

Abstract

This Letter presents a constraint on the total width of the Higgs boson (Γ _H) using a combined measurement of on-shell Higgs boson production and the production of four top quarks, which involves contributions from off-shell Higgs boson-mediated processes. This method relies on the assumption that the tree-level Higgs-top Yukawa coupling strength is the same for on-shell and off-shell Higgs boson production processes, thereby avoiding any assumptions about the relationship between on-shell and off-shell gluon fusion Higgs production rates, which were central to previous measurements. The result is based on up to 140 fb ⁻¹ of proton–proton collisions at a centre-of-mass energy of s = 13 TeV collected with the ATLAS detector at the Large Hadron Collider. The observed (expected) 95% confidence level upper limit on Γ _H is 450 MeV (75 MeV). Additionally, considering the constraint on the Higgs-top Yukawa coupling from loop-induced Higgs boson production and decay processes further yields an observed (expected) upper limit of 160 MeV (55 MeV).

Original language	English
Article number	139277
Pages (from-to)	1-21
Number of pages	21
Journal	Physics Letters B
Volume	861
Early online date	20 Jan 2025
DOIs	https://doi.org/10.1016/j.physletb.2025.139277
Publication status	Published - 1 Feb 2025

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3 Finished
3 Active

Upgrade of the ATLAS detector at the LHC (2023-26)
Clark, P. (Principal Investigator)
Science and Technology Facilities Council
1/04/23 → 31/03/27
Project: Research
Experimental Particle Physics at the University of Edinburgh
Leonidopoulos, C. (Principal Investigator)
Science and Technology Facilities Council
1/04/23 → 31/03/26
Project: Research
Experimental Particle Physics at the University of Edinburgh
Leonidopoulos, C. (Principal Investigator)
Science and Technology Facilities Council
1/10/22 → 31/03/26
Project: Research

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ATLAS Collaboration, Alderweireldt, S., Allen, J. F., Clark, P. J., Curran, J. R., Duda, D., Farrington, S. M., Gao, Y., Gargan, J. M., Gonzalez Andana, R. Y., Jiang, C., Leonidopoulos, C., Soberi, M. F. M., Martin, V. J., Mijović, L., Parrish, V. A., Pender, E. A., Qiu, T., Silva, J. M., ... Zaid, E. (2025). Constraint on the total width of the Higgs boson from Higgs boson and four-top-quark measurements in pp collisions at s = 13 TeV with the ATLAS detector. Physics Letters B, 861, 1-21. Article 139277. https://doi.org/10.1016/j.physletb.2025.139277

@article{820ca2a6246f4ecf8ae2a9cc98c7c6c4,

title = "Constraint on the total width of the Higgs boson from Higgs boson and four-top-quark measurements in pp collisions at s = 13 TeV with the ATLAS detector",

abstract = "This Letter presents a constraint on the total width of the Higgs boson (Γ H) using a combined measurement of on-shell Higgs boson production and the production of four top quarks, which involves contributions from off-shell Higgs boson-mediated processes. This method relies on the assumption that the tree-level Higgs-top Yukawa coupling strength is the same for on-shell and off-shell Higgs boson production processes, thereby avoiding any assumptions about the relationship between on-shell and off-shell gluon fusion Higgs production rates, which were central to previous measurements. The result is based on up to 140 fb −1 of proton–proton collisions at a centre-of-mass energy of s = 13 TeV collected with the ATLAS detector at the Large Hadron Collider. The observed (expected) 95% confidence level upper limit on Γ H is 450 MeV (75 MeV). Additionally, considering the constraint on the Higgs-top Yukawa coupling from loop-induced Higgs boson production and decay processes further yields an observed (expected) upper limit of 160 MeV (55 MeV).",

author = "{ATLAS Collaboration} and S. Alderweireldt and J.F. Allen and Clark, {P. J.} and J.R. Curran and D. Duda and Farrington, {S. M.} and Y. Gao and J.M. Gargan and {Gonzalez Andana}, R.Y. and C. Jiang and C. Leonidopoulos and Soberi, {M. Firdaus M.} and Martin, {V. J.} and L. Mijovi{\'c} and V.A. Parrish and E.A. Pender and T. Qiu and J.M. Silva and A.L. Sopio and F. Ustuner and E.M. Villhauer and H. Watson and B.M. Wynne and Z. Xu and E. Zaid",

year = "2025",

month = feb,

day = "1",

doi = "10.1016/j.physletb.2025.139277",

language = "English",

volume = "861",

pages = "1--21",

journal = "Physics Letters B",

issn = "0370-2693",

publisher = "Elsevier",

}

ATLAS Collaboration, Alderweireldt, S, Allen, JF, Clark, PJ, Curran, JR, Duda, D , Farrington, SM , Gao, Y, Gargan, JM, Gonzalez Andana, RY, Jiang, C, Leonidopoulos, C, Soberi, MFM, Martin, VJ , Mijović, L, Parrish, VA, Pender, EA, Qiu, T , Silva, JM , Sopio, AL, Ustuner, F, Villhauer, EM, Watson, H , Wynne, BM , Xu, Z & Zaid, E 2025, 'Constraint on the total width of the Higgs boson from Higgs boson and four-top-quark measurements in pp collisions at s = 13 TeV with the ATLAS detector', Physics Letters B, vol. 861, 139277, pp. 1-21. https://doi.org/10.1016/j.physletb.2025.139277

TY - JOUR

T1 - Constraint on the total width of the Higgs boson from Higgs boson and four-top-quark measurements in pp collisions at s = 13 TeV with the ATLAS detector

AU - ATLAS Collaboration

AU - Alderweireldt, S.

AU - Allen, J.F.

AU - Clark, P. J.

AU - Curran, J.R.

AU - Duda, D.

AU - Farrington, S. M.

AU - Gao, Y.

AU - Gargan, J.M.

AU - Gonzalez Andana, R.Y.

AU - Jiang, C.

AU - Leonidopoulos, C.

AU - Soberi, M. Firdaus M.

AU - Martin, V. J.

AU - Mijović, L.

AU - Parrish, V.A.

AU - Pender, E.A.

AU - Qiu, T.

AU - Silva, J.M.

AU - Sopio, A.L.

AU - Ustuner, F.

AU - Villhauer, E.M.

AU - Watson, H.

AU - Wynne, B.M.

AU - Xu, Z.

AU - Zaid, E.

PY - 2025/2/1

Y1 - 2025/2/1

N2 - This Letter presents a constraint on the total width of the Higgs boson (Γ H) using a combined measurement of on-shell Higgs boson production and the production of four top quarks, which involves contributions from off-shell Higgs boson-mediated processes. This method relies on the assumption that the tree-level Higgs-top Yukawa coupling strength is the same for on-shell and off-shell Higgs boson production processes, thereby avoiding any assumptions about the relationship between on-shell and off-shell gluon fusion Higgs production rates, which were central to previous measurements. The result is based on up to 140 fb −1 of proton–proton collisions at a centre-of-mass energy of s = 13 TeV collected with the ATLAS detector at the Large Hadron Collider. The observed (expected) 95% confidence level upper limit on Γ H is 450 MeV (75 MeV). Additionally, considering the constraint on the Higgs-top Yukawa coupling from loop-induced Higgs boson production and decay processes further yields an observed (expected) upper limit of 160 MeV (55 MeV).

AB - This Letter presents a constraint on the total width of the Higgs boson (Γ H) using a combined measurement of on-shell Higgs boson production and the production of four top quarks, which involves contributions from off-shell Higgs boson-mediated processes. This method relies on the assumption that the tree-level Higgs-top Yukawa coupling strength is the same for on-shell and off-shell Higgs boson production processes, thereby avoiding any assumptions about the relationship between on-shell and off-shell gluon fusion Higgs production rates, which were central to previous measurements. The result is based on up to 140 fb −1 of proton–proton collisions at a centre-of-mass energy of s = 13 TeV collected with the ATLAS detector at the Large Hadron Collider. The observed (expected) 95% confidence level upper limit on Γ H is 450 MeV (75 MeV). Additionally, considering the constraint on the Higgs-top Yukawa coupling from loop-induced Higgs boson production and decay processes further yields an observed (expected) upper limit of 160 MeV (55 MeV).

U2 - 10.1016/j.physletb.2025.139277

DO - 10.1016/j.physletb.2025.139277

M3 - Letter

SN - 0370-2693

VL - 861

SP - 1

EP - 21

JO - Physics Letters B

JF - Physics Letters B

M1 - 139277

ER -

Constraint on the total width of the Higgs boson from Higgs boson and four-top-quark measurements in pp collisions at s = 13 TeV with the ATLAS detector

Abstract

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Projects

Upgrade of the ATLAS detector at the LHC (2023-26)

Experimental Particle Physics at the University of Edinburgh

Experimental Particle Physics at the University of Edinburgh

Cite this