Simulation of the neutron-tagged deep inelastic scattering at EicC

Abstract

Measuring the pionic structure function is of high interests as it provides a new area for understanding the strong interaction among quarks and testing the QCD predictions. To this purpose, we investigate the feasibility and the expected impacts of a possible experiment on EicC. We show the simulation results on the statistical precision of an EicC measurement, based on the model of leading neutron tagged DIS process and the parton distribution functions of the pion from JAM18 global analysis. The simulation shows that at EicC, the kinematics cover $x_{\pi }$ range from 0.01 to 1, and $Q^2$ range from 1 GeV${}^2$ to 50 GeV${}^2$, within the acceptable statistical uncertainty. Assuming an integrated luminosity of 50 fb${}^{-1}$, in the low-$Q^2$ region ($<10$ GeV${}^2$), the MC data show that the suggested measurement in the whole $x_{\pi }$ range reaches very high precision ($<3$\%). To perform such an experiment, only the addition of a far-forward neutron calorimeter is needed.

arXiv comment9 pages, 12 figures

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Cited by in corpus (2)

• Tackling the kaon structure function at EicC
• Feasibility Study of Pion and Kaon Structure via the Sullivan Process at EicC