Geometry tagging for heavy ions at JLEIC

Abstract

Geometry tagging is an experimental technique for selecting event samples where one can, on a statistical basis, control the geometry of the collision in order to make more incisive physics measurements. Several physics measurements at the EIC would benefit significantly from the use of this technique, including studies of gluon anti-shadowing, studies of parton propagation, attenuation and hadronization in the nucleus, and ultimately the search for parton saturation. The JLEIC full-acceptance detector, with full acceptance to forward-going neutrons, protons and nuclear fragments and a high data-taking rate is ideally suited to such geometry tagging. We improve, tune, and apply existing modeling codes, BeAGLE, Sartre, and GEMC, and detector descriptions to study this physics.

Summary of Working Group 7: Future of DIS

“…Christian Schwanenberger tune detectors to study this type of physics, are now available and could be used for simulation studies [10]. High precision measurements at an electron-ion collider demand high precision measurements of hadron polarization.…”