Observation of 𝑊 𝛾𝛾 triboson production in proton-proton collisions at √𝑠 = 13 TeV with the ATLAS detector

ATLAS Publications; J.F. Allen; T.M. Carter; D. Duda; J.M. Gargan; A. Hasib; V.A. Parrish; E.A. Pender; T. Qiu; E.P. Takeva; N. Themistokleous; E.M. Villhauer; Z. Xu; E. Zaid

doi:10.1016/j.physletb.2023.138400

Observation of 𝑊 𝛾𝛾 triboson production in proton-proton collisions at √𝑠 = 13 TeV with the ATLAS detector

ATLAS Publications, J.F. Allen, T.M. Carter, D. Duda, J.M. Gargan, A. Hasib, V.A. Parrish, E.A. Pender, T. Qiu, E.P. Takeva, N. Themistokleous, E.M. Villhauer, Z. Xu, E. Zaid

School of Physics and Astronomy

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

Abstract

This letter reports the observation of 𝑊 (𝓁𝜈)𝛾𝛾 production in proton-proton collisions. This measurement uses the full Run 2 sample of events recorded at a center-of-mass energy of √𝑠 = 13 TeV by the ATLAS detector at the LHC, corresponding to an integrated luminosity of 140 fb−1. Events with a leptonically-decaying 𝑊 boson and at least two photons are considered. The background-only hypothesis is rejected with an observed and expected
significance of 5.6 standard deviations. The inclusive fiducial production cross section of 𝑊 (𝑒𝜈)𝛾𝛾 and 𝑊 (𝜇𝜈)𝛾𝛾 events is measured to be 𝜎f id = 13.8 ± 1.1(stat) +2.1−2.0(syst) ± 0.1(lumi) fb, in agreement with the Standard Model prediction.

Original language	English
Article number	138400
Pages (from-to)	1-24
Number of pages	24
Journal	Physics Letters B
Volume	848
DOIs	https://doi.org/10.1016/j.physletb.2023.138400
Publication status	Published - 1 Jan 2024

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http://arxiv.org/abs/2308.03041

3 Finished
3 Active

Upgrade of the ATLAS detector at the LHC (2023-26)
Clark, P.
1/04/23 → 31/03/26
Project: Research
Experimental Particle Physics at the University of Edinburgh
Leonidopoulos, C.
1/04/23 → 30/09/25
Project: Research
Experimental Particle Physics at the University of Edinburgh
Leonidopoulos, C.
1/10/22 → 30/09/25
Project: Research

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ATLAS Publications, Allen, J. F., Carter, T. M., Duda, D., Gargan, J. M., Hasib, A., Parrish, V. A., Pender, E. A., Qiu, T., Takeva, E. P., Themistokleous, N., Villhauer, E. M., Xu, Z., & Zaid, E. (2024). Observation of 𝑊 𝛾𝛾 triboson production in proton-proton collisions at √𝑠 = 13 TeV with the ATLAS detector. Physics Letters B, 848, 1-24. Article 138400. https://doi.org/10.1016/j.physletb.2023.138400

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title = "Observation of 𝑊 𝛾𝛾 triboson production in proton-proton collisions at √𝑠 = 13 TeV with the ATLAS detector",

abstract = "This letter reports the observation of 𝑊 (𝓁𝜈)𝛾𝛾 production in proton-proton collisions. This measurement uses the full Run 2 sample of events recorded at a center-of-mass energy of √𝑠 = 13 TeV by the ATLAS detector at the LHC, corresponding to an integrated luminosity of 140 fb−1. Events with a leptonically-decaying 𝑊 boson and at least two photons are considered. The background-only hypothesis is rejected with an observed and expectedsignificance of 5.6 standard deviations. The inclusive fiducial production cross section of 𝑊 (𝑒𝜈)𝛾𝛾 and 𝑊 (𝜇𝜈)𝛾𝛾 events is measured to be 𝜎f id = 13.8 ± 1.1(stat) +2.1−2.0(syst) ± 0.1(lumi) fb, in agreement with the Standard Model prediction.",

author = "{ATLAS Publications} and Clark, {Philip James} and Sinead Farrington and Yanyan Gao and Christos Leonidopoulos and Martin, {Victoria Jane} and Liza Mijovic and Benjamin Wynne and Sara Alderweireldt and J.F. Allen and T.M. Carter and D. Duda and J.M. Gargan and A. Hasib and V.A. Parrish and E.A. Pender and T. Qiu and E.P. Takeva and N. Themistokleous and E.M. Villhauer and Z. Xu and E. Zaid",

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ATLAS Publications, Allen, JF, Carter, TM, Duda, D, Gargan, JM, Hasib, A, Parrish, VA, Pender, EA, Qiu, T, Takeva, EP, Themistokleous, N, Villhauer, EM, Xu, Z & Zaid, E 2024, 'Observation of 𝑊 𝛾𝛾 triboson production in proton-proton collisions at √𝑠 = 13 TeV with the ATLAS detector', Physics Letters B, vol. 848, 138400, pp. 1-24. https://doi.org/10.1016/j.physletb.2023.138400

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AU - ATLAS Publications

AU - Clark, Philip James

AU - Farrington, Sinead

AU - Gao, Yanyan

AU - Leonidopoulos, Christos

AU - Martin, Victoria Jane

AU - Mijovic, Liza

AU - Wynne, Benjamin

AU - Alderweireldt, Sara

AU - Allen, J.F.

AU - Carter, T.M.

AU - Duda, D.

AU - Gargan, J.M.

AU - Hasib, A.

AU - Parrish, V.A.

AU - Pender, E.A.

AU - Qiu, T.

AU - Takeva, E.P.

AU - Themistokleous, N.

AU - Villhauer, E.M.

AU - Xu, Z.

AU - Zaid, E.

PY - 2024/1/1

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N2 - This letter reports the observation of 𝑊 (𝓁𝜈)𝛾𝛾 production in proton-proton collisions. This measurement uses the full Run 2 sample of events recorded at a center-of-mass energy of √𝑠 = 13 TeV by the ATLAS detector at the LHC, corresponding to an integrated luminosity of 140 fb−1. Events with a leptonically-decaying 𝑊 boson and at least two photons are considered. The background-only hypothesis is rejected with an observed and expectedsignificance of 5.6 standard deviations. The inclusive fiducial production cross section of 𝑊 (𝑒𝜈)𝛾𝛾 and 𝑊 (𝜇𝜈)𝛾𝛾 events is measured to be 𝜎f id = 13.8 ± 1.1(stat) +2.1−2.0(syst) ± 0.1(lumi) fb, in agreement with the Standard Model prediction.

AB - This letter reports the observation of 𝑊 (𝓁𝜈)𝛾𝛾 production in proton-proton collisions. This measurement uses the full Run 2 sample of events recorded at a center-of-mass energy of √𝑠 = 13 TeV by the ATLAS detector at the LHC, corresponding to an integrated luminosity of 140 fb−1. Events with a leptonically-decaying 𝑊 boson and at least two photons are considered. The background-only hypothesis is rejected with an observed and expectedsignificance of 5.6 standard deviations. The inclusive fiducial production cross section of 𝑊 (𝑒𝜈)𝛾𝛾 and 𝑊 (𝜇𝜈)𝛾𝛾 events is measured to be 𝜎f id = 13.8 ± 1.1(stat) +2.1−2.0(syst) ± 0.1(lumi) fb, in agreement with the Standard Model prediction.

U2 - 10.1016/j.physletb.2023.138400

DO - 10.1016/j.physletb.2023.138400

M3 - Article

SN - 0370-2693

VL - 848

SP - 1

EP - 24

JO - Physics Letters B

JF - Physics Letters B

M1 - 138400

ER -

Observation of 𝑊 𝛾𝛾 triboson production in proton-proton collisions at √𝑠 = 13 TeV with the ATLAS detector

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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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