A First Measurement of Low x Low Q^2 Structure Functions in Neutrino Scattering

TL;DR

This paper presents the first measurements of neutrino-nucleon structure functions at very low x and Q^2, providing new insights into nucleon structure in previously unexplored kinematic regions.

Contribution

It introduces a novel analysis of neutrino scattering data at low x and Q^2, extending the understanding of structure functions into new kinematic territory.

Findings

Structure function F2_nu measured down to Q^2=0.3 GeV^2

Comparison with charged lepton scattering data shows consistency

Behavior of F2_nu studied as Q^2 approaches zero

Abstract

A new structure function analysis of CCFR deep inelastic nu-N and nubar-N scattering data is presented for previously unexplored kinematic regions down to Bjorken x=0.0045 and Q^2=0.3 GeV^2. Comparisons to charged lepton scattering data from NMC and E665 experiments are made and the behavior of the structure function F2_nu is studied in the limit Q^2 -> 0.