Deep-Inelastic e^+p Scattering at Very High Q^2 from ZEUS at HERA

TL;DR

This paper reports on measurements of deep-inelastic positron-proton scattering at very high Q^2 using the ZEUS detector at HERA, providing data that tests the Standard Model at unprecedented energy scales.

Contribution

It presents the first detailed measurements of neutral-current and charged-current deep-inelastic scattering at very high Q^2 from ZEUS at HERA, extending the experimental data into new energy regimes.

Findings

Measured differential cross sections for Q^2 > 400 GeV^2

Compared results with Standard Model predictions

Provided data for testing electroweak theory at high energies

Abstract

Neutral-current and charged-current deep-inelastic scattering at very high four-momentum transfer squared (Q^2) have been studied in positron-proton collisions at center-of-mass energy 300 GeV using the ZEUS detector at HERA. An integrated luminosity of 47.7 $pb^{-1}$ was collected in the years 1994-1997. Differential cross sections are presented for $Q^2 > 400 GeV^2$ and compared to Standard Model predictions.