Impact of double-logarithmic electroweak radiative corrections on the non-singlet structure functions at small x

TL;DR

This paper investigates how electroweak radiative corrections, calculated in the double-logarithmic approximation, influence the differences in non-singlet structure functions of u and d quarks at small x, revealing flavor-dependent effects.

Contribution

It provides a novel calculation of electroweak radiative corrections' impact on non-singlet structure functions in the double-logarithmic approximation.

Findings

Electroweak corrections introduce flavor-dependent differences in non-singlet structure functions.

The impact on non-singlet intercepts is quantitatively estimated.

Electroweak effects become significant at small x in QCD analyses.

Abstract

In the QCD context, the non-singlet structure functions of u and d -quarks are identical, save the initial quark densities. Electroweak radiative corrections, being flavor-dependent, bring further difference between the non-singlets. This difference is calculated in the double-logarithmic approximation and the impact of the electroweak corrections on the non-singlet intercepts is estimated numerically.