Constraining strongly coupled new physics from cosmic rays with machine learning techniques

Abstract

Cosmic rays interacting with the atmosphere allow for the probing of fundamental interactions at ultra-high energies. We thus obtain limits on strongly coupled new physics models via their imprints on cosmic-ray air showers. Using the Monte Carlo event generators Herwig and HERBVI, and the air shower simulator CORSIKA, to simulate such processes, we apply machine learning algorithms to the simulated observables to discriminate the events arising via new physics from the QCD background. We then use the signal and background discrimination performance to set potential limits on the cross sections of the new physics models.

arXiv comment7 pages, 7 figures. V2: Two figures added for clarity, some discussions extended, agrees with version published in EPL

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• Machine Learning Classification of Sphalerons and Black Holes at the LHC