Speaker
Dr
Emanuele Roberto Nocera
(Rudolf Peierls Centre for Theoretical Physics University of Oxford)
Description
The behaviour of parton distribution functions (PDFs) at sufficiently small and large values of momentum fractions is expected to be governed by a power law, as a result of Regge theory and spectator counting rules respectively. I investigate in which regions of momentum fraction and energy such an asymptotic behaviour emerges, based on recent determinations of PDFs from a global analysis of experimental data. I discuss how these compare with theoretical expectations provided by perturbative and non-perturbative quantum chromodynamics (QCD) and models of nucleon structure, I examine how much the latter can be discriminated by the data, and I comment on how these are related to our first-principle understanding of QCD.
Primary author
Dr
Emanuele Roberto Nocera
(Rudolf Peierls Centre for Theoretical Physics University of Oxford)
