Low energy protons as probes of hadronization dynamics

Energetic quarks liberated from hadrons in nuclear deep-inelastic scattering propagate through the medium, interacting with it via several processes. These include quark energy loss and interactions of forming hadrons. One manifestation these is enhanced emission low-energy charged particles, referred to as grey tracks. We use theoretical components BeAGLE event generator interpret track signatures parton transport hadron formation by comparing its predictions E665 data. extend base version adding four different options for describing loss. The data we used consists multiplicity ratios fixed-target 490 GeV muons on xenon normalized deuterium a function number compare tracks BeAGLE, varying parameters determine which physics phenomena can be identified find that are unaffected modifications forward production. Thus their production must dominated backward region. This offers advantage selecting certain particles region unlikely bias centrality selection. see strong correlation between in-medium path length. Our model does not reproduce suppression observed projectile an underprediction proton rate kinematics, suggesting stronger source interaction medium needed accurate modeling. results lay important foundation future spectator tagging studies at both Jefferson Laboratory Electron-Ion Collider, where neutron will feasible down very small momenta.