Speakers
Description
The mechanism of the nuclear modifications of parton densities at $x > 0.3$ (EMC effect) observed in DIS experiments remains a major open question in QCD. In inclusive nuclear DIS, $e + A \rightarrow e’ + X$, one observes only the average effect but cannot learn anything about the underlying nuclear interactions. In DIS on the deuteron with spectator nucleon tagging, $e + D \rightarrow e’ + X + p(n)$, the nuclear configuration is fixed by the detected spectator momentum, and one can analyze the nuclear modifications differentially in the relative momentum/distance between the nucleons. We study the feasibility of measuring the configuration-dependent EMC effect in deuteron DIS with spectator tagging at the EIC. The BeAGLE event generator is supplied with a general virtuality-dependent parametrization of the tagged EMC effect constrained by theory and inclusive nuclear DIS data. Proton and neutron spectator tagging is simulated with the baseline EIC far-forward detector (extending earlier results reported in [1]). An analysis strategy for the tagged EMC effect is outlined (ratio observables, separation of initial- and final-state effects), and the uncertainties and impact of the measurements are quantified.
[1] A Jentsch, Zh. Tu, C. Weiss, Phys.Rev.C 104 (2021) 6, 065205
| Submitted on behalf of a Collaboration? | No |
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