Dynamical QCD Predictions for Ultrahigh Energy Neutrino Cross Sections
Astrophysics
2009-10-30 v1 High Energy Physics - Phenomenology
Abstract
Neutrino-nucleon total cross sections for neutrino energies up to ultrahigh energies (UHE), E_\nu=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.
Keywords
Cite
@article{arxiv.astro-ph/9809273,
title = {Dynamical QCD Predictions for Ultrahigh Energy Neutrino Cross Sections},
author = {M. Gl"uck and S. Kretzer and E. Reya},
journal= {arXiv preprint arXiv:astro-ph/9809273},
year = {2009}
}
Comments
16 pages, LaTeX, 4 figures, uses epsfig and amssymb style