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

ATLAS Publications, T.M. Carter, R.Y. Gonzalez Andana, A. Hasib, M.P. Heath, S. Palazzo, V.A. Parrish, E.P. Takeva, N. Themistokleous, E. Zaid

Research output: Contribution to journal β€Ί Article β€Ί peer-review

Abstract / Description of output

A search for heavy long-lived multi-charged particles is performed using the ATLAS detector at the LHC. Data collected in 2015–2018 at βˆšπ‘  = 13 TeV from 𝑝𝑝 collisions corresponding to an integrated luminosity of 139 fbβˆ’1are examined. Particles producing anomalously high ionization, consistent with long-lived spin-Β½ massive particles with electric charges from |π‘ž| = 2𝑒 to |π‘ž| = 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 |π‘ž| = 2𝑒 particles, and the most stringent one, 1600 GeV, is for |π‘ž| = 6𝑒 particles.
Original languageEnglish
Article number138316
Pages (from-to)1-25
Number of pages25
JournalPhysics Letters B
Volume847
DOIs
Publication statusPublished - 10 Dec 2023

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