Determination of cosmic-ray primary mass on an event-by-event basis using radio detection
Instituto de Física, Universidade de São Paulo, São Paulo, Brazil
2 Departamento de Física de Partículas & Instituto Galego de Física de Altas Enerxías, Univ. de Santiago de Compostela 15782 Santiago de Compostela, Spain
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Published online: 24 September 2019
Traditionally, the depth of maximum shower development Xmax has been used as a surrogate observable for composition. Here we present the possibility of a new methodology to discriminate between light and heavy cosmic-ray primaries on an event-by-event basis. This method is based on comparisons between detected radio signals and Monte Carlo simulations, but instead of first reconstructing Xmax, we try to infer the cosmic-ray composition directly. We show that a large discrimination efficiency could in principle be reached for zenith angles above θ≃65°, even when some of the typical uncertainties in radio detection are taken into account.
© The Authors, published by EDP Sciences, 2019
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