0000000000545762

AUTHOR

J Kelley

showing 2 related works from this author

Evidence for High-Energy Extraterrestrial Neutrinos at the IceCube Detector

2013

We report on results of an all-sky search for high-energy neutrino events interacting within the IceCube neutrino detector conducted between May 2010 and May 2012. The search follows up on the previous detection of two PeV neutrino events, with improved sensitivity and extended energy coverage down to approximately 30 TeV. Twenty-six additional events were observed, substantially more than expected from atmospheric backgrounds. Combined, both searches reject a purely atmospheric origin for the twenty-eight events at the $4\sigma$ level. These twenty-eight events, which include the highest energy neutrinos ever observed, have flavors, directions, and energies inconsistent with those expected…

Particle physicsCosmology and Nongalactic Astrophysics (astro-ph.CO)General Science & TechnologyPhysics::Instrumentation and DetectorsSolar neutrinoAstrophysics::High Energy Astrophysical PhenomenaFOS: Physical sciencesddc:500.2AstrophysicsIceCube Collaboration01 natural sciences7. Clean energyHigh Energy Physics - ExperimentIceCube Neutrino ObservatoryIceCubeHigh Energy Physics - Experiment (hep-ex)MD Multidisciplinary0103 physical sciences010303 astronomy & astrophysicsastro-ph.HEPhysicsHigh Energy Astrophysical Phenomena (astro-ph.HE)Multidisciplinaryhep-ex010308 nuclear & particles physicsHigh Energy Physics::PhenomenologyneutrinosSolar neutrino problemKM3NeTNeutrino detector13. Climate actionastro-ph.COMeasurements of neutrino speedHigh Energy Physics::Experimentddc:500NeutrinoNeutrino astronomyAstrophysics - High Energy Astrophysical PhenomenaphysicsAstrophysics - Cosmology and Nongalactic AstrophysicsScience
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Measurement of the Proton-Air Cross Section at root s=57 TeV with the Pierre Auger Observatory

2012

We report a measurement of the proton-air cross section for particle production at the center-of-mass energy per nucleon of 57 TeV. This is derived from the distribution of the depths of shower maxima observed with the Pierre Auger Observatory: systematic uncertainties are studied in detail. Analyzing the tail of the distribution of the shower maxima, a proton-air cross section of [505±22(stat)-36+28(syst)]mb is found. © 2012 American Physical Society.

Physics and Astronomy (all)Astrophysics::High Energy Astrophysical PhenomenaSettore FIS/01 - Fisica SperimentaleAstrophysics::Instrumentation and Methods for AstrophysicsHigh Energy Physics::ExperimentNuclear Experiment
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