6533b824fe1ef96bd12814d9
RESEARCH PRODUCT
Color glass condensate at next-to-leading order meets HERA data
Guillaume BeufHenri HänninenTuomas LappiHeikki Mäntysaarisubject
QuarkParticle physicsLogarithmNuclear TheoryFOS: Physical scienceshiukkasfysiikka01 natural sciences114 Physical sciencesperturbative QCDColor-glass condensateNuclear Theory (nucl-th)High Energy Physics - Phenomenology (hep-ph)0103 physical sciences010306 general physicsPhysics010308 nuclear & particles physicsHigh Energy Physics::PhenomenologyOrder (ring theory)HERADeep inelastic scatteringDipoleHigh Energy Physics - PhenomenologyQCD in nuclear reactionsEvolution equationHigh Energy Physics::Experimentydinfysiikkadescription
We perform the first dipole picture fit to HERA inclusive cross section data using the full next-to-leading order (NLO) impact factor combined with an improved Balitsky-Kovchegov evolution including the dominant effects beyond leading logarithmic accuracy at low $x$. We find that three different formulations of the evolution equation that have been proposed in the recent literature result in a very similar description of HERA data, and robust predictions for future deep inelastic scattering experiments. We find evidence pointing towards a significant nonperturbative contribution to the structure function for light quarks, which stresses the need to extend the NLO impact factor calculation to massive quarks.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2020-10-30 |