Tagged spectator deep-inelastic scattering off the deuteron as a tool to study neutron structure

Abstract

We give an overview of a model to describe deep-inelastic scattering (DIS) off the deuteron with a spectator proton, based on the virtual nucleon approximation (VNA). The model accounts for the final-state interactions (FSI) of the DIS debris with the spectator proton. Values of the rescattering cross section are obtained by fits to high-momentum spectator data. By using the so-called "pole extrapolation method", free neutron structure functions can be obtained by extrapolating low-momentum spectator proton data to the on-shell neutron pole. We apply this method to the BONuS data set and find a surprising Bjorken $x$ dependence, indicating a possible rise of the neutron to proton structure function ratio at high $x$.

6 pages, 4 figures, proceedings of POETIC6

References in corpus (5)

• Measurement of the structure function of the nearly free neutron using spectator tagging in inelastic ${}^2$H(e, e'p)X scattering with CLAS
• Final-state interactions in semi-inclusive deep inelastic scattering off the Deuteron
• Neutron spin structure with polarized deuterons and spectator proton tagging at EIC
• Direct observation of quark-hadron duality in the free neutron F_2 structure function
• Final-state interactions in deep-inelastic scattering from a tensor polarized deuteron target

Cited by in corpus (1)

• Factorization Breaking of $A_d^T$ for polarized deuteron targets in a relativistic framework