Speaker
Description
General Parton Distributions (GPDs) are statistical “functions” used in quantum chromodynamics (QCD) to describe the internal structure of hadrons, such as protons and neutrons, in terms of their constituents, known as partons (quarks and gluons). Physicists have been studying GPDs for about 30 years, and are now approaching the ability to create tomographic images (i.e., 3D images) of the nucleon. To reach this point, we need to study various interactions to access certain information from the GPDs. Such reactions include “Compton Scattering off quarks” for instance: Timelike Compton Scattering (TCS), Deeply Virtual Compton Scattering (DVCS), and Double Deeply Virtual Compton Scattering (DDVCS).
DVCS has been studied intensively. TCS has recently been observed at Jefferson Lab, but DDVCS has never been measured. This study focuses on the implementation of a muon detector at Jefferson Lab for the study of DDVCS. It uses a simulation framework developed at CERN called Geant4. The purpose of our simulations is to provide an understanding of the experiment and its challenges. One challenge that needs to be addressed is the detection of muons in a large background of pions, since the pions and muons have similar mass.
