IIHE invited seminar: The quark and gluon structure of the proton in the LHC precision era

by Dr Juan Rojo (Vrije Universiteit Amsterdam/Nikhef)

Friday 10 Nov 2017, 14:00 → 15:00 Europe/Brussels

Jean Sacton Seminar room (1G003) (IIHE, VUB)

abstract: The determination of the quark and gluon structure of the proton is a central component of the precision phenomenology program at the Large Hadron Collider (LHC). This internal structure of nucleons is quantified in the collinear QCD factorization framework by the Parton Distribution Functions (PDFs), which encode the probability of finding quarks and gluons inside the proton carrying a given amount of its momentum. Being driven by low-scale non-perturbative dynamics, PDFs cannot currently be computed from first principles, and therefore they need to be determined from experimental data from a variety of hard-scattering cross-sections in lepton-proton and proton-proton collisions. This program, known as the global QCD analysis, involves combining the most PDF-sensitive data and the highest precision QCD and electroweak calculations available within a statistically robust fitting methodology. In this talk we review recent progress in the determination of the quark and gluon structure of the proton, with emphasis on the impact of new processes in the global PDF fit, such as top quark differential distributions and the transverse monument of Z bosons, and discuss some of their implications for the current and upcoming LHC runs

Slides rojo-VUB-NNPDF31.pdf