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
A search for heavy long-lived multi-charged particles is performed using the ATLAS detector at the LHC. Data collected in 2015-2018 at $$\sqrt{s}$$ = 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-$$\frac{1}{2}$$ 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.
- Research Organization:
- SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- Contributing Organization:
- ATLAS Collaboration
- Grant/Contract Number:
- AC02-76SF00515
- OSTI ID:
- 2405164
- Journal Information:
- Physics Letters. B, Journal Name: Physics Letters. B Vol. 847; ISSN 0370-2693
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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