Search for dark matter in association with an energetic photon in pp collisions at √s = 13 TeV with the ATLAS detector

ATLAS Publications; T.M. Carter; M. Faucci Giannelli; A. Hasib; M.P. Heath; S. Palazzo; A. Søgaard; E.P. Takeva; A.J. Taylor; N. Themistokleous; E.M Villhauer

doi:10.1007/JHEP02(2021)226

Search for dark matter in association with an energetic photon in pp collisions at √s = 13 TeV with the ATLAS detector

ATLAS Publications, T.M. Carter, M. Faucci Giannelli, A. Hasib, M.P. Heath, S. Palazzo, A. Søgaard, E.P. Takeva, A.J. Taylor, N. Themistokleous, E.M Villhauer

School of Physics and Astronomy

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

Abstract

A search for dark matter is conducted in final states containing a photon and
missing transverse momentum in proton-proton collisions at √s = 13 TeV. The data, collected during 2015–2018 by the ATLAS experiment at the CERN LHC, correspond to an integrated luminosity of 139 fb−1. No deviations from the predictions of the Standard Model are observed and 95% confidence-level upper limits between 2.45 fb and 0.5 fb are set on the visible cross section for contributions from physics beyond the Standard Model, in different ranges of the missing transverse momentum. The results are interpreted as 95% confidence-level limits in models where weakly interacting dark-matter candidates are
pair-produced via an s-channel axial-vector or vector mediator. Dark-matter candidates with masses up to 415 (580) GeV are excluded for axial-vector (vector) mediators, while the maximum excluded mass of the mediator is 1460 (1470) GeV. In addition, the results are expressed in terms of 95% confidence-level limits on the parameters of a model with an axion-like particle produced in association with a photon, and are used to constrain the coupling gaZγ of an axion-like particle to the electroweak gauge bosons.

Original language	English
Article number	226
Pages (from-to)	1-45
Number of pages	45
Journal	Journal of High Energy Physics
Volume	2021
Issue number	2
DOIs	https://doi.org/10.1007/JHEP02(2021)226
Publication status	Published - 25 Feb 2021

Keywords / Materials (for Non-textual outputs)

Dark matter
Hadron-Hadron scattering (experiments)

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10.1007/JHEP02(2021)226Licence: Creative Commons: Attribution (CC-BY)

http://arxiv.org/abs/2011.05259

1 Active
5 Finished

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

Cite this

ATLAS Publications, Carter, T. M., Faucci Giannelli, M., Hasib, A., Heath, M. P., Palazzo, S., Søgaard, A., Takeva, E. P., Taylor, A. J., Themistokleous, N., & Villhauer, E. M. (2021). Search for dark matter in association with an energetic photon in pp collisions at √s = 13 TeV with the ATLAS detector. Journal of High Energy Physics, 2021(2), 1-45. Article 226. https://doi.org/10.1007/JHEP02(2021)226

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abstract = "A search for dark matter is conducted in final states containing a photon and missing transverse momentum in proton-proton collisions at √s = 13 TeV. The data, collected during 2015–2018 by the ATLAS experiment at the CERN LHC, correspond to an integrated luminosity of 139 fb−1. No deviations from the predictions of the Standard Model are observed and 95\% confidence-level upper limits between 2.45 fb and 0.5 fb are set on the visible cross section for contributions from physics beyond the Standard Model, in different ranges of the missing transverse momentum. The results are interpreted as 95\% confidence-level limits in models where weakly interacting dark-matter candidates are pair-produced via an s-channel axial-vector or vector mediator. Dark-matter candidates with masses up to 415 (580) GeV are excluded for axial-vector (vector) mediators, while the maximum excluded mass of the mediator is 1460 (1470) GeV. In addition, the results are expressed in terms of 95\% confidence-level limits on the parameters of a model with an axion-like particle produced in association with a photon, and are used to constrain the coupling gaZγ of an axion-like particle to the electroweak gauge bosons.",

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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 T.M. Carter and \{Faucci Giannelli\}, M. and A. Hasib and M.P. Heath and S. Palazzo and A. S{\o}gaard and E.P. Takeva and A.J. Taylor and N. Themistokleous and E.M Villhauer",

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ATLAS Publications, Carter, TM, Faucci Giannelli, M, Hasib, A, Heath, MP, Palazzo, S, Søgaard, A, Takeva, EP, Taylor, AJ, Themistokleous, N & Villhauer, EM 2021, 'Search for dark matter in association with an energetic photon in pp collisions at √s = 13 TeV with the ATLAS detector', Journal of High Energy Physics, vol. 2021, no. 2, 226, pp. 1-45. https://doi.org/10.1007/JHEP02(2021)226

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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 - Carter, T.M.

AU - Faucci Giannelli, M.

AU - Hasib, A.

AU - Heath, M.P.

AU - Palazzo, S.

AU - Søgaard, A.

AU - Takeva, E.P.

AU - Taylor, A.J.

AU - Themistokleous, N.

AU - Villhauer, E.M

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AB - A search for dark matter is conducted in final states containing a photon and missing transverse momentum in proton-proton collisions at √s = 13 TeV. The data, collected during 2015–2018 by the ATLAS experiment at the CERN LHC, correspond to an integrated luminosity of 139 fb−1. No deviations from the predictions of the Standard Model are observed and 95% confidence-level upper limits between 2.45 fb and 0.5 fb are set on the visible cross section for contributions from physics beyond the Standard Model, in different ranges of the missing transverse momentum. The results are interpreted as 95% confidence-level limits in models where weakly interacting dark-matter candidates are pair-produced via an s-channel axial-vector or vector mediator. Dark-matter candidates with masses up to 415 (580) GeV are excluded for axial-vector (vector) mediators, while the maximum excluded mass of the mediator is 1460 (1470) GeV. In addition, the results are expressed in terms of 95% confidence-level limits on the parameters of a model with an axion-like particle produced in association with a photon, and are used to constrain the coupling gaZγ of an axion-like particle to the electroweak gauge bosons.

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KW - Hadron-Hadron scattering (experiments)

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JO - Journal of High Energy Physics

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ER -

Search for dark matter in association with an energetic photon in pp collisions at √s = 13 TeV with the ATLAS detector

Abstract

Keywords / Materials (for Non-textual outputs)

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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