Abstract
The authors provide the first comprehensive and quantitative discussion of deep-inelastic scattering on the deuteron with spectator nucleon tagging at the future Electron Ion Collider (EIC), using the baseline far-forward detector design. They explore the feasibility of extracting free neutron structure with proton tagging, as well as free proton structure with neutron tagging.
Highlights
Deep-inelastic lepton scattering (DIS) represents a principal tool for exploring the short-range structure of hadrons and nuclei and studying the expressions of quantum chromodynamics in the perturbative and nonperturbative regimes
In the present article we study the extraction of free nucleon structure from tagged Deep-inelastic scattering (DIS) with pole extrapolation: both free neutron structure from proton tagging and proton structure from neutron tagging
We have performed a comprehensive study of deuteron DIS with spectator nucleon tagging at Electron Ion Collider (EIC), focusing on the extraction of free neutron and proton structure using the pole extrapolation method
Summary
Deep-inelastic lepton scattering (DIS) represents a principal tool for exploring the short-range structure of hadrons and nuclei and studying the expressions of quantum chromodynamics in the perturbative and nonperturbative regimes. Deep-inelastic scattering (DIS) on the deuteron with spectator nucleon tagging represents a unique method for extracting the free neutron structure functions and exploring the nuclear modifications of bound protons and neutrons. Purpose: Simulate deuteron DIS with proton or neutron tagging with the baseline EIC far-forward detector design. Study feasibility of free nucleon structure extraction using pole extrapolation in the spectator momentum. The spectator nucleon momentum is reconstructed including effects of detector acceptance and resolution. Results: Proton and neutron spectator detection is possible over the full transverse momentum range 0 < pT < 100 MeV/c needed for pole extrapolation. Conclusions: Free neutron structure extraction through proton tagging and pole extrapolation is feasible with the baseline EIC far-forward detector design. The corresponding extraction of free proton structure through neutron tagging provides a reference point for future studies of nuclear modifications
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