ZEUS results on high Q^2 DIS cross sections and QCD fits

TL;DR

This paper presents ZEUS measurements of high Q^2 DIS cross sections from e^-p and e^+p data, compares them with Standard Model predictions, and performs QCD fits to extract parton distribution functions.

Contribution

It provides new high Q^2 DIS cross section data and performs QCD fits using ZEUS data, enhancing understanding of proton structure at high energies.

Findings

Measured differential cross sections for NC and CC interactions.

Extracted structure functions xF_3, xG_3, and F_2^CC.

Compared results with Standard Model predictions.

Abstract

Single and double differential cross sections ds/dQ^2, ds/dx, ds/dy and d^2s/dQ^2dx of the inclusive neutral current (NC) measurement from the 98/99 e^-p and the charged current (CC) measurement from the 99/00 e^+p data sets are presented. With the previously published e^+p NC ZEUS measurement xF_3 and xG_3, and with the e^-p CC ZEUS measurement F_2^CC are extracted. The results are compared to the prediction of the Standard Model using parton density functions of the ZEUS next-to-leading-order QCD analysis which is reviewed.