2010/10/19 by Paul Sommers, Sommers, Paul
Medicine · Physics and Astronomy · #Astrophysics and Cosmic Phenomena #Dark Matter and Cosmic Phenomena #FOS: Physical sciences #High Energy Astrophysical Phenomena (astro-ph.HE) #Radiation Therapy and Dosimetry
paper · pdf · doi:10.48550/arxiv.1010.3963
openalex publication_date 2010/10/19 · openalex created_date 2022/10/05 · openalex updated_date 2026/07/28
Observations of cosmic rays have been improving at all energies, with higher\nstatistics and reduced systematics. Fundamental questions remain regarding the\norigins of cosmic rays both within the Galaxy and in extragalactic sources, and\nnew puzzles have arisen at ultra-high energies. A key issue is determining the\nelemental composition based on air shower measurements. Accelerator experiments\nat the LHC, with comprehensive measurements in the forward direction and high\ninteraction energies, will greatly reduce the uncertainty in air shower\nsimulations. Ultra-high energy air showers may reveal properties of particle\ninteractions at energies far beyond the reach of the LHC.\n