The high energy neutrino cross-section in the Standard Model and its uncertainty

TL;DR

This paper provides updated predictions for high energy neutrino cross-sections within the Standard Model, analyzing uncertainties from PDFs and discussing potential extensions to the conventional formalism.

Contribution

It offers the first comprehensive assessment of PDF-related uncertainties in high energy neutrino cross-section predictions using modern NLO QCD fits.

Findings

PDF uncertainties are significant at high energies

Potential need for formalism extensions like ln(1/x) resummation

Analysis of biases influencing cross-section estimates

Abstract

Updated predictions are presented for high energy neutrino and antineutrino charged and neutral current cross-sections within the conventional DGLAP formalism of NLO QCD using modern PDF fits. PDF uncertainties from model assumptions and parametrization bias are considered in addition to the experimental uncertainties. Particular attention is paid to assumptions and biases which could signal the need for extension of the conventional formalism to include effects such as ln(1/x) resummation or non-linear effects of high gluon density.