Search for heavy long-lived multi-charged particles in the full LHC Run 2 pp collision data at s√ = 13 TeV using the ATLAS detector

ATLAS Collaboration

doi:10.1016/j.physletb.2023.138316

Search for heavy long-lived multi-charged particles in the full LHC Run 2 pp collision data at s√ = 13 TeV using the ATLAS detector

ATLAS Collaboration

Physics and Astronomy

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Abstract

A search for heavy long-lived multi-charged particles is performed using the ATLAS detector at the LHC. Data collected in 2015-2018 at s√ = 13 TeV from pp collisions corresponding to an integrated luminosity of 139 fb⁻¹ are examined. Particles producing anomalously high ionization, consistent with long-lived spin-1/2 massive particles with electric charges from |q|=2e to |q|=7e are searched for. No statistically significant evidence of such particles is observed, and 95% confidence level cross-section upper limits are calculated and interpreted as the lower mass limits for a Drell-Yan plus photon-fusion production mode. The least stringent limit, 1060 GeV, is obtained for |q|=2e particles, and the most stringent one, 1600 GeV, is for |q|=6e particles.

Original language	English
Journal	Physics Letters B
Early online date	10 Nov 2023
DOIs	https://doi.org/10.1016/j.physletb.2023.138316
Publication status	E-pub ahead of print - 10 Nov 2023

Bibliographical note

38 pages in total, author list starting page 21, 9 figures, 5 tables, submitted to PLB. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/EXOT-2018-54

Keywords

hep-ex

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Cite this

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title = "Search for heavy long-lived multi-charged particles in the full LHC Run 2 pp collision data at s√ = 13 TeV using the ATLAS detector",

abstract = "A search for heavy long-lived multi-charged particles is performed using the ATLAS detector at the LHC. Data collected in 2015-2018 at s√ = 13 TeV from pp collisions corresponding to an integrated luminosity of 139 fb−1 are examined. Particles producing anomalously high ionization, consistent with long-lived spin-1/2 massive particles with electric charges from |q|=2e to |q|=7e are searched for. No statistically significant evidence of such particles is observed, and 95% confidence level cross-section upper limits are calculated and interpreted as the lower mass limits for a Drell-Yan plus photon-fusion production mode. The least stringent limit, 1060 GeV, is obtained for |q|=2e particles, and the most stringent one, 1600 GeV, is for |q|=6e particles.",

keywords = "hep-ex",

author = "{ATLAS Collaboration} and Paul Newman",

note = "38 pages in total, author list starting page 21, 9 figures, 5 tables, submitted to PLB. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/EXOT-2018-54",

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T1 - Search for heavy long-lived multi-charged particles in the full LHC Run 2 pp collision data at s√ = 13 TeV using the ATLAS detector

AU - ATLAS Collaboration

AU - Newman, Paul

N1 - 38 pages in total, author list starting page 21, 9 figures, 5 tables, submitted to PLB. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/EXOT-2018-54

PY - 2023/11/10

Y1 - 2023/11/10

N2 - A search for heavy long-lived multi-charged particles is performed using the ATLAS detector at the LHC. Data collected in 2015-2018 at s√ = 13 TeV from pp collisions corresponding to an integrated luminosity of 139 fb−1 are examined. Particles producing anomalously high ionization, consistent with long-lived spin-1/2 massive particles with electric charges from |q|=2e to |q|=7e are searched for. No statistically significant evidence of such particles is observed, and 95% confidence level cross-section upper limits are calculated and interpreted as the lower mass limits for a Drell-Yan plus photon-fusion production mode. The least stringent limit, 1060 GeV, is obtained for |q|=2e particles, and the most stringent one, 1600 GeV, is for |q|=6e particles.

AB - A search for heavy long-lived multi-charged particles is performed using the ATLAS detector at the LHC. Data collected in 2015-2018 at s√ = 13 TeV from pp collisions corresponding to an integrated luminosity of 139 fb−1 are examined. Particles producing anomalously high ionization, consistent with long-lived spin-1/2 massive particles with electric charges from |q|=2e to |q|=7e are searched for. No statistically significant evidence of such particles is observed, and 95% confidence level cross-section upper limits are calculated and interpreted as the lower mass limits for a Drell-Yan plus photon-fusion production mode. The least stringent limit, 1060 GeV, is obtained for |q|=2e particles, and the most stringent one, 1600 GeV, is for |q|=6e particles.

KW - hep-ex

U2 - 10.1016/j.physletb.2023.138316

DO - 10.1016/j.physletb.2023.138316

M3 - Article

SN - 0370-2693

JO - Physics Letters B

JF - Physics Letters B

ER -

Search for heavy long-lived multi-charged particles in the full LHC Run 2 pp collision data at s√ = 13 TeV using the ATLAS detector

Abstract

Bibliographical note

Keywords

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