Determination of electron-nucleus collision geometry with forward neutrons

Abstract

There are a large number of physics programs one can explore in electron-nucleus collisions at a future electron-ion collider. Collision geometry is very important in these studies, while the measurement for an event-by-event geometric control is rarely discussed in the prior deep inelastic scattering experiments off a nucleus. This paper seeks to provide some detailed studies on the potential of tagging collision geometries through forward neutron multiplicity measurements with a zero degree calorimeter. This type of geometry handle, if achieved, can be extremely beneficial in constraining nuclear effects for the electron-nucleus program at an electron-ion collider.

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• Investigation of the background in coherent $J/\psi$ production at the EIC
• BeAGLE: Benchmark $e$A Generator for LEptoproduction in high energy lepton-nucleus collisions
• Probing short-range nucleon-nucleon interactions with an Electron-Ion Collider
• A study of nuclear structure of light nuclei at the Electron-Ion Collider
• Design of a SiPM-on-Tile ZDC for the future EIC and its Performance with Graph Neural Networks
• A Method to Constrain Preferential Emission and Spectator Dynamics in Heavy-Ion Collisions
• Characterization of nuclear breakup as a function of hard-scattering kinematics using dijets measured by ATLAS in $p$+Pb collisions