Probing low-x QCD with cosmic neutrinos at the Pierre Auger Observatory

Details Probing low-x QCD with cosmic neutrinos at the Pierre Auger Observatory Probing low-x QCD with cosmic neutrinos at the Pierre Auger Observatory

2006-05-09

arxiv.org/abs/hep-ph/0605086v2

Phys. Rev. D74 (2006) 043008

Physics

High Energy Physics

High Energy Physics - Phenomenology

Accepted for publication in Phys Rev D; Details of the NLO neutrino-nucleon cross-section calculation available at: http://w

Scientific paper

10.1103/PhysRevD.74.043008

The sources of the observed ultra-high energy cosmic rays must also generate ultra-high energy neutrinos. Deep inelastic scattering of these neutrinos with nucleons on Earth probe center-of-mass energies $\sqrt{s} \sim 100$ TeV, well beyond those attainable at terrestrial colliders. By comparing the rates for two classes of observable events, any departure from the benchmark (unscreened perturbative QCD) neutrino-nucleon cross-section can be constrained. Using the projected sensitivity of the Pierre Auger Observatory to quasi-horizontal showers and Earth-skimming tau neutrinos, we show that a `Super-Auger' detector can thus provide an unique probe of strong interaction dynamics.

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