Heidelberg University

Past, present and future challenges in the determination of the structure of the proton

Maria Ubiali, University of Cambridge


Since the first Deep Inelastic Scattering experiments at SLAC, the subnuclear structure of the proton has been a key ingredient to verify and test Quantum Chromo Dynamics. In time, a sophisticated theoretical, statistical and experimental framework has been elaborated to parametrise the proton in terms of its elementary constituents, quarks and gluons. Nowadays a robust and detailed knowledge of the proton subnuclear structure is a crucial input at the Large Hadron Collider (LHC). The uncertainty on the Parton Distribution Functions (PDFs) - the functions that parametrise protons in terms of quarks and gluons - often represents a limiting factor in the accuracy of theoretical predictions. At the same time the precise measurements taken at the LHC give a powerful insight on the proton. In the series of lectures I will give a detailed overview of the key theoretical, statistical and experimental aspects behind PDFs determination. I will then give an overview on the state of the art of modern PDF fits. I will then mention the new exciting theoretical and statistical challenges that the precision frontier reached by the LHC is opening up.

Part 1


Part 2