A global analysis of diffractive events at HERA
S. Taheri Monfared, Ali N. Khorramian, S. Atashbar Tehrani
TL;DR
This paper performs a comprehensive global analysis of diffractive events at HERA, extracting diffractive parton distribution functions and structure functions using NLO QCD fits, providing new insights into the Pomeron structure.
Contribution
It introduces a new quark distribution form for the Pomeron and achieves a good fit to all available diffractive DIS data at HERA.
Findings
Successful extraction of DPDFs and structure functions
Predictions for longitudinal and charm diffractive structure functions
Comparison with previous analyses shows improved agreement
Abstract
We extract diffractive parton distribution functions (DPDFs) and diffractive structure functions from the most recent H1 and ZEUS diffractive DIS data obtained by various methods. We consider Pomeron as an object with parton distribution function, evolving according to the next-to-leading order (NLO) DGLAP equations within the framework of the `Fixed Flavour Number Scheme' (FFNS). Having performed a global fit analysis, we achieve a very good description of all available measurements by introducing a new set of quark distribution form for the Pomeron. We predict longitudinal and charm proton diffractive structure function as well. Our results are compared with other analysis from the literature.
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