Dynamical QCD Predictions for Ultrahigh Energy Neutrino Cross Sections

Abstract

Neutrino-nucleon total cross sections for neutrino energies up to ultrahigh energies (UHE), E_ν=10^12 GeV, are evaluated within the framework of the dynamical (radiative) parton model. The expected uncertainties of these predictions do not exceed the level of about 20 % at the highest energies where contributions of parton distributions in the yet unmeasured region around x\simeq 10^-8 to 10^-9 are non-negligible. This is far more accurate than estimated uncertainties of about 2^+-1 due to ad hoc extrapolations of parton distributions to x<10^-5 required for calculating UHE cosmic neutrino event rates.

16 pages, LaTeX, 4 figures, uses epsfig and amssymb style

References in corpus (1)

• On the detection of Ultra High Energy Neutrinos with the Auger Observatory

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