Abstract
We analyse, within a dipole model, the final, inclusive HERA DIS cross section data in the low x region, using fully correlated errors. We show, that these highest precision data are very well described within the dipole model framework starting from Q 2 values of 3.5 GeV 2 to the highest values of Q 2 = 250 GeV 2 . We made predictions for the LHC data using parton distributions functions (PDFs) in particular - gluon distributions from BGK dipole model fits to HERA data
Highlights
Many investigations have shown that HERA inclusive and diffractive DIS cross sections are very well described by the dipole models [1,2,3], which provide a natural description of QCD reaction in the lowx and low Q2 region
They allow a simultaneous description of many different physics reactions, like inclusive DIS processes, inclusive diffractive processes, exclusive J/ψ, ρ, φ production, diffractive jet production, or diffractive and non-diffractive charm production
The understanding of the properties of the gluon density and its precise knowledge is very important because the QCD-evolved gluon density determines the cross sections of most relevant physics processes, e.g. Higgs production at LHC
Summary
Many investigations have shown that HERA inclusive and diffractive DIS cross sections are very well described by the dipole models [1,2,3], which provide a natural description of QCD reaction in the lowx and low Q2 region. They allow a simultaneous description of many different physics reactions, like inclusive DIS processes, inclusive diffractive processes, exclusive J/ψ, ρ, φ production, diffractive jet production, or diffractive and non-diffractive charm production. The precise determination of the gluon density relies on the analysis of high quality, inclusive, DIS data taken over the full, experimentally accessible x and Q2 region. The full information about the data is made accessible within the xFitter facility [9]
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