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Paper   IPM / Particles / 15138
School of Particles and Accelerator
  Title:   First global next-to-leading order determination of diffractive parton distribution functions and their uncertainties within the xFitter framework
  Author(s): 
1.  Muhammad Goharipour
2.  Hamzeh Khanpour
3.  Vadim Guzey
  Status:   Published
  Journal: Eur. Phys. J. C
  No.:  4, 309
  Vol.:  78
  Year:  2018
  Supported by:  IPM
  Abstract:
We present GKG18-DPDFs, a next-to-leading order (NLO) QCD analysis of diffractive parton distribution functions (diffractive PDFs) and their uncertainties. This is the first global set of diffractive PDFs determined within the xFitter framework. This analysis is motivated by all available and most up-to-date data on inclusive diffractive deep inelastic scattering (diffractive DIS). Heavy quark contributions are considered within the framework of the `TR' general mass variable flavor number scheme (GM-VFNS). We form a mutually consistent set of diffractive PDFs due to the inclusion of high-precision data from H1/ZEUS combined inclusive diffractive cross sections measurements. We study the impact of the H1/ZEUS combined data by producing a variety of determinations based on reduced data sets. We find that these data sets have a significant impact on the diffractive PDFs with some substantial reductions in uncertainties. The predictions based on the extracted diffractive PDFs are compared to the analyzed diffractive DIS data and with other determinations of the diffractive PDFs.


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