Journal
PHYSICS LETTERS B
Volume 811, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.physletb.2020.135929
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Funding
- Sonderforschungsbereich Neutrinos and Dark Matter in Astro-and Particle Physics [SFB1258]
- Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany's Excellence Strategy [EXC2094 -390783311]
- Science and Technology Facilities Council (STFC) [ST/T004169/1]
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We demonstrate that megaton-mass neutrino telescopes are able to observe the signal from long-lived particles beyond the Standard Model, in particular the stau, the supersymmetric partner of the tau lepton. Its signature is an excess of charged particle tracks with horizontal arrival directions and energy deposits between 0.1 and 1 TeV inside the detector. We exploit this previously-overlooked signature to search for stau particles in the publicly available IceCube data. The data shows no evidence of physics beyond the Standard Model. We derive a new lower limit on the stau mass of 320 GeV (95% C.L.) and estimate that this new approach, when applied to the full data set available to the IceCube collaboration, will reach word-leading sensitivity to the stau mass (m((tau) over tilde) = 450 GeV). (C) 2020 The Authors. Published by Elsevier B.V.
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