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
Date
2023
Authors
Aad, G.
Abbott, B.
Abbott, D.C.
Abeling, K.
Abidi, S.H.
Aboulhorma, A.
Abramowicz, H.
Abreu, H.
Abulaiti, Y.
Abusleme Hoffman, A.C.
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Journal article
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Physics Letters B, 2023; 847:138316-1-138316-25
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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-½ 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.
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© 2023 The Author(s). Published by Elsevier B.V. Funded by SCOAP³. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).