Investigating the EMC Effect in Highly-Virtual Nucleons at Jefferson Lab

The EMC effect, the phenomenon by which quark distributions are modified in bound nucleons, has defied explanation since its discovery over 30 years ago. Recently, there have been indications, experimentally and theoretically, that the EMC effect may be linked to high-momentum nucleons. Rather than the EMC effect being caused by a modest modification in all nucleons, it is possible that highly virtual nucleons are modified substantially. BAND (Backward Angle Neutron Detector) is an experiment in early 2019 with Run Group B at Jefferson Lab Hall B to search for medium-modification in high-momentum nucleons. By using a method of spectator-tagging, one can tag on the virtuality of the struck proton to study modification in deep inelastic scattering. In my talk, I will present the EMC effect, discuss its possible connection to high momentum nucleons, and describe how the BAND will select on these nucleons (spectator-tagging) to extract medium-modification effects. Finally, I will discuss the construction and calibration phase of the BAND, which is ongoing in Hall B, as well as expected sensitivities based on Geant4 simulation package.