Radiative Corrections for H1 F2(x,Q**2) Measurement

TL;DR

This paper evaluates QED radiative corrections for the measurement of the proton structure function F2 in the H1 experiment at HERA, highlighting their significance in certain phase space regions.

Contribution

It provides a numerical analysis of radiative corrections using the TERAD91 program for low x and Q^2 ranges in the H1 experiment, which was not previously detailed.

Findings

Radiative corrections can be significant in some phase space points.

The study covers x from 10^{-2} to 10^{-4} and Q^2 from 5 to 80 GeV^2.

The corrections vary across the phase space, affecting measurement accuracy.

Abstract

The numerical study of QED radiative corrections in the low $x$ region for the H1 experiment at HERA was performed. The analytical program TERAD91 was used to get the size of the radiative corrections for the measurement of the proton structure function $F_2(x,Q^2)$ in the range $x= 10^{-2} - 10^{-4}$ and $ 5 GeV^2 < Q^2 < 80 GeV^2$. It was found that radiative corrections can be not small in some points of the phase space of the mixed variables.