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Small-x Parton Densities from HERA and the Ultra-High Energy Neutrino-Nucleon Cross Sections

Raj Gandhi·Chris Quigg·M. H. Reno·Ina Sarcevic
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Abstract

In light of recent measurements of the nucleon structure function in the small-$x$ deep-inelastic regime at HERA and the consequently improved theoretical understanding of the quark distributions in this range of parton fractional momentum, we present new results for the neutrino-nucleon cross section at ultra high energies, up to $ E_ν \sim 10^{21}$ eV. The results are relevant to deep underground muon detectors looking for such neutrinos. For $\simeq 10^{20}$ eV neutrinos, our cross sections are about a factor of $4$ to $10$ times larger than the previously reported results by Reno, Quigg and Walker. We discuss implications of this new neutrino-nucleon cross section for a variety of current and future neutrino detectors.

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Raj Gandhi, Chris Quigg, M. H. Reno, Ina Sarcevic. 1995-10-14. Small-x Parton Densities from HERA and the Ultra-High Energy Neutrino-Nucleon Cross Sections. https://arxiv.org/abs/hep-ph/9510295

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