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TeV Strings and the Neutrino-Nucleon Cross Section at Ultra-high Energies

F. Cornet·J. I. Illana·M. Masip
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Abstract

In scenarios with the fundamental unification scale at the TeV one expects string excitations of the standard model fields at accessible energies. We study the neutrino-nucleon cross section in these models. We show that duality of the scattering amplitude forces the existence of a tower of massive leptoquarks that mediate the process in the s-channel. Using the narrow-width approximation we find a sum rule for the production rate of resonances with different spin at each mass level. We show that these contributions can increase substantially the standard model neutrino-nucleon cross section, although seem insufficient in order to explain the cosmic ray events above the GZK cutoff energy.

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F. Cornet, J. I. Illana, M. Masip. 2001-04-03. TeV Strings and the Neutrino-Nucleon Cross Section at Ultra-high Energies. https://doi.org/10.1103/physrevlett.86.4235

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