Journal
PHYSICS LETTERS B
Volume 727, Issue 1-3, Pages 190-193Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.physletb.2013.10.021
Keywords
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Funding
- National Science Foundation [NSF PHY11-25915]
- U.S. Department of Energy [DE-FG02-95ER40896, DE-FG02-12ER41811]
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We interpret the PeV shower events observed by the IceCube Collaboration as an s-channel enhancement of neutrino-quark scattering by a leptoquark that couples to the tau-flavor and light quarks. With a leptoquark mass around 0.6 TeV and a steep 1/E-2.3 neutrino flux, charged-current scattering gives cascade events at similar to 1 PeV and neutral-current scattering gives cascade events at similar to 0.5 PeV. This mechanism is also consistent with the paucity of muon-track events above 100 TeV. (C) 2013 Elsevier B.V. All rights reserved.
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