Neutrino-Induced Giant Air Showers in Large Extra Dimension Models

Details Neutrino-Induced Giant Air Showers in Large Extra Dimension Models Neutrino-Induced Giant Air Showers in Large Extra Dimension Models

2000-11-25

arxiv.org/abs/hep-ph/0011310v2

Int.J.Mod.Phys. A17 (2002) 533-554

Physics

High Energy Physics

High Energy Physics - Phenomenology

24 pages, latex, 19 figures; text discussion and references added, typos corrected; figures and conclusions unchanged

Scientific paper

10.1142/S0217751X02005979

In models based on large extra dimensions where massive spin 2 exchange can dominate at high energies, the neutrino-proton cross section can rise to typical hadronic values at energies above 10^20 eV. The neutrino then becomes a candidate for the primary that initiates the highest energy cosmic ray showers. We investigate characteristics of neutrino-induced showers compared to proton-induced showers. The comparison includes study of starting depth, profile with depth, lateral particle distribution at ground and muon lateral distribution at ground level. We find that for cross sections above 20 mb there are regions of parameter space where the two types of showers are essentially indistinguishable. We conclude that the neutrino candidate hypothesis cannot be ruled out on the basis of shower characteristics.

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