Measurement of the 𝑉 𝐻, 𝐻 → 𝜏𝜏 process with the ATLAS detector at 13 TeV

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

doi:10.1016/j.physletb.2024.138817

Measurement of the 𝑉 𝐻, 𝐻 → 𝜏𝜏 process with the ATLAS detector at 13 TeV

ATLAS Collaboration, S. Alderweireldt, J.F. Allen, T.M. Carter, P. J. Clark, J.R. Curran, D. Duda, S. M. Farrington, Y. Gao, J.M. Gargan, R.Y. Gonzalez Andana, C. Leonidopoulos, V. J. Martin, L. Mijović, V.A. Parrish, E.A. Pender, T. Qiu, J.M. Silva, N. Themistokleous, E.M. VillhauerB.M. Wynne, Z. Xu, E. Zaid

School of Physics and Astronomy

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

Abstract

A measurement of the Standard Model Higgs boson produced in association with a 𝑊 or 𝑍 boson and decaying into a pair of 𝜏-leptons is presented. This search is based on proton-proton collision data collected at √𝑠 = 13 TeV by the ATLAS experiment at the LHC corresponding to an integrated luminosity of 140 fb−1. For the Higgs boson candidate, only final states with at least one 𝜏-lepton decaying hadronically (𝜏 → hadrons + 𝜈𝜏 ) are considered. For the vector bosons, only leptonic decay channels are considered: 𝑍 → 𝓁𝓁 and 𝑊 → 𝓁𝜈𝓁 , with 𝓁 = 𝑒, 𝜇. An excess of events over the expected background is found with an observed (expected) significance of 4.2 (3.6) standard deviations, providing evidence of the Higgs boson produced in association with a vector boson and
decaying into a pair of 𝜏-leptons. The ratio of the measured cross-section to the Standard Model prediction is 𝜇 𝜏𝜏 VH = 1.28 +0.30−0.29 (stat.) +0.25−0.21 (syst.). This result represents the most accurate measurement of the 𝑉 𝐻(𝜏𝜏) process achieved to date.

Original language	English
Article number	138817
Pages (from-to)	1-28
Number of pages	28
Journal	Physics Letters B
Volume	855
Early online date	25 Jun 2024
DOIs	https://doi.org/10.1016/j.physletb.2024.138817
Publication status	Published - 1 Aug 2024

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10.1016/j.physletb.2024.138817Licence: Creative Commons: Attribution (CC-BY)

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 → 31/03/26
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

Cite this

ATLAS Collaboration, Alderweireldt, S., Allen, J. F., Carter, T. M., Clark, P. J., Curran, J. R., Duda, D., Farrington, S. M., Gao, Y., Gargan, J. M., Gonzalez Andana, R. Y., Leonidopoulos, C., Martin, V. J., Mijović, L., Parrish, V. A., Pender, E. A., Qiu, T., Silva, J. M., Themistokleous, N., ... Zaid, E. (2024). Measurement of the 𝑉 𝐻, 𝐻 → 𝜏𝜏 process with the ATLAS detector at 13 TeV. Physics Letters B, 855, 1-28. Article 138817. https://doi.org/10.1016/j.physletb.2024.138817

@article{7cd2b71eec6d4f6ba26b9e826837c44c,

title = "Measurement of the 𝑉 𝐻, 𝐻 → 𝜏𝜏 process with the ATLAS detector at 13 TeV",

abstract = "A measurement of the Standard Model Higgs boson produced in association with a 𝑊 or 𝑍 boson and decaying into a pair of 𝜏-leptons is presented. This search is based on proton-proton collision data collected at √𝑠 = 13 TeV by the ATLAS experiment at the LHC corresponding to an integrated luminosity of 140 fb−1. For the Higgs boson candidate, only final states with at least one 𝜏-lepton decaying hadronically (𝜏 → hadrons + 𝜈𝜏 ) are considered. For the vector bosons, only leptonic decay channels are considered: 𝑍 → 𝓁𝓁 and 𝑊 → 𝓁𝜈𝓁 , with 𝓁 = 𝑒, 𝜇. An excess of events over the expected background is found with an observed (expected) significance of 4.2 (3.6) standard deviations, providing evidence of the Higgs boson produced in association with a vector boson anddecaying into a pair of 𝜏-leptons. The ratio of the measured cross-section to the Standard Model prediction is 𝜇 𝜏𝜏 VH = 1.28 +0.30−0.29 (stat.) +0.25−0.21 (syst.). This result represents the most accurate measurement of the 𝑉 𝐻(𝜏𝜏) process achieved to date.",

author = "{ATLAS Collaboration} and S. Alderweireldt and J.F. Allen and T.M. Carter 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. Leonidopoulos and Martin, {V. J.} and L. Mijovi{\'c} and V.A. Parrish and E.A. Pender and T. Qiu and J.M. Silva and N. Themistokleous and E.M. Villhauer and B.M. Wynne and Z. Xu and E. Zaid",

year = "2024",

month = aug,

day = "1",

doi = "10.1016/j.physletb.2024.138817",

language = "English",

volume = "855",

pages = "1--28",

journal = "Physics Letters B",

issn = "0370-2693",

publisher = "Elsevier",

}

ATLAS Collaboration, Alderweireldt, S, Allen, JF, Carter, TM, Clark, PJ, Curran, JR, Duda, D , Farrington, SM , Gao, Y, Gargan, JM, Gonzalez Andana, RY, Leonidopoulos, C , Martin, VJ , Mijović, L, Parrish, VA, Pender, EA, Qiu, T , Silva, JM, Themistokleous, N, Villhauer, EM, Wynne, BM , Xu, Z & Zaid, E 2024, 'Measurement of the 𝑉 𝐻, 𝐻 → 𝜏𝜏 process with the ATLAS detector at 13 TeV', Physics Letters B, vol. 855, 138817, pp. 1-28. https://doi.org/10.1016/j.physletb.2024.138817

TY - JOUR

T1 - Measurement of the 𝑉 𝐻, 𝐻 → 𝜏𝜏 process with the ATLAS detector at 13 TeV

AU - ATLAS Collaboration

AU - Alderweireldt, S.

AU - Allen, J.F.

AU - Carter, T.M.

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 - Leonidopoulos, C.

AU - Martin, V. J.

AU - Mijović, L.

AU - Parrish, V.A.

AU - Pender, E.A.

AU - Qiu, T.

AU - Silva, J.M.

AU - Themistokleous, N.

AU - Villhauer, E.M.

AU - Wynne, B.M.

AU - Xu, Z.

AU - Zaid, E.

PY - 2024/8/1

Y1 - 2024/8/1

N2 - A measurement of the Standard Model Higgs boson produced in association with a 𝑊 or 𝑍 boson and decaying into a pair of 𝜏-leptons is presented. This search is based on proton-proton collision data collected at √𝑠 = 13 TeV by the ATLAS experiment at the LHC corresponding to an integrated luminosity of 140 fb−1. For the Higgs boson candidate, only final states with at least one 𝜏-lepton decaying hadronically (𝜏 → hadrons + 𝜈𝜏 ) are considered. For the vector bosons, only leptonic decay channels are considered: 𝑍 → 𝓁𝓁 and 𝑊 → 𝓁𝜈𝓁 , with 𝓁 = 𝑒, 𝜇. An excess of events over the expected background is found with an observed (expected) significance of 4.2 (3.6) standard deviations, providing evidence of the Higgs boson produced in association with a vector boson anddecaying into a pair of 𝜏-leptons. The ratio of the measured cross-section to the Standard Model prediction is 𝜇 𝜏𝜏 VH = 1.28 +0.30−0.29 (stat.) +0.25−0.21 (syst.). This result represents the most accurate measurement of the 𝑉 𝐻(𝜏𝜏) process achieved to date.

AB - A measurement of the Standard Model Higgs boson produced in association with a 𝑊 or 𝑍 boson and decaying into a pair of 𝜏-leptons is presented. This search is based on proton-proton collision data collected at √𝑠 = 13 TeV by the ATLAS experiment at the LHC corresponding to an integrated luminosity of 140 fb−1. For the Higgs boson candidate, only final states with at least one 𝜏-lepton decaying hadronically (𝜏 → hadrons + 𝜈𝜏 ) are considered. For the vector bosons, only leptonic decay channels are considered: 𝑍 → 𝓁𝓁 and 𝑊 → 𝓁𝜈𝓁 , with 𝓁 = 𝑒, 𝜇. An excess of events over the expected background is found with an observed (expected) significance of 4.2 (3.6) standard deviations, providing evidence of the Higgs boson produced in association with a vector boson anddecaying into a pair of 𝜏-leptons. The ratio of the measured cross-section to the Standard Model prediction is 𝜇 𝜏𝜏 VH = 1.28 +0.30−0.29 (stat.) +0.25−0.21 (syst.). This result represents the most accurate measurement of the 𝑉 𝐻(𝜏𝜏) process achieved to date.

U2 - 10.1016/j.physletb.2024.138817

DO - 10.1016/j.physletb.2024.138817

M3 - Letter

SN - 0370-2693

VL - 855

SP - 1

EP - 28

JO - Physics Letters B

JF - Physics Letters B

M1 - 138817

ER -

Measurement of the 𝑉 𝐻, 𝐻 → 𝜏𝜏 process with the ATLAS detector at 13 TeV

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

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