Measurements of Transverse Energy Flow in Deep-Inelastic Scattering at HERA

TL;DR

This paper presents measurements of transverse energy flow in deep-inelastic scattering events at HERA, analyzing its dependence on various kinematic variables and comparing results with QCD models.

Contribution

It provides detailed experimental data on transverse energy flow across a broad kinematic range, enhancing understanding of hadronic final states in DIS.

Findings

Transverse energy flow varies with Q^2, x, and W.

Mean transverse energy behavior differs between central and photon fragmentation regions.

Results are consistent with certain QCD-based models.

Abstract

Measurements of transverse energy flow are presented for neutral current deep-inelastic scattering events produced in positron-proton collisions at HERA. The kinematic range covers squared momentum transfers Q^2 from 3.2 to 2,200 GeV^2, the Bjorken scaling variable x from 8.10^{-5} to 0.11 and the hadronic mass W from 66 to 233 GeV. The transverse energy flow is measured in the hadronic centre of mass frame and is studied as a function of Q^2, x, W and pseudorapidity. A comparison is made with QCD based models. The behaviour of the mean transverse energy in the central pseudorapidity region and an interval corresponding to the photon fragmentation region are analysed as a function of Q^2 and W.