2020-03-20 11:00  1st Meeting Room 5F

Hadronic Structure Functions

Robert Perry

The theory of the strong force is unique amongst the known forces of nature in that the strength of its interactions grow with distance. It is postulated that this leads to the empirically observed colour confinement hypothesis, which states that quarks and gluons form together into complex bound states called hadrons. Thus the study of the strong force becomes the study of hadrons and their structure.  Information may be drawn about the structure of hadrons from both elastic and inelastic scattering data in the form of the hadron structure functions, which are encoded in form factors and GPDs. In this talk, I will discuss the theoretical model used to extract the pions electromagnetic form factor.  In particular, I will show how this model may lead to an overestimation of the pion form factor. I will then propose a modification to the model which addresses this theoretical shortcoming, and discuss how this changes the results. In this talk I will also discuss an ongoing calculation of the pions parton distribution function using lattice QCD.