HERA Diffractive Structure Function Data and Parton Distributions
Paul Newman, Frank-Peter Schilling
TL;DR
This paper reviews recent HERA diffractive structure function measurements, compares different data sets, and performs NLO DGLAP QCD fits to extract diffractive parton densities, highlighting differences in gluon densities.
Contribution
It provides a comparative analysis of HERA diffractive data and derives diffractive parton distributions using NLO QCD fits, addressing discrepancies between experiments.
Findings
Differences in Q^2 dependence between H1 and ZEUS data.
Diffractive gluon densities vary between data sets.
NLO DGLAP fits successfully extract parton densities.
Abstract
Recent diffractive structure function measurements by the H1 and ZEUS experiments at HERA are reviewed. Various data sets, obtained using systematically different selection and reconstruction methods, are compared. NLO DGLAP QCD fits are performed to the most precise H1 and ZEUS data and diffractive parton densities are obtained in each case. Differences between the Q^2 dependences of the H1 and ZEUS data are reflected as differences between the diffractive gluon densities.
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Taxonomy
TopicsParticle physics theoretical and experimental studies · Scientific Research and Discoveries · Astronomy and Astrophysical Research