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arXiv · 1609.01970

Tagged spectator DIS on a polarized spin-1 target

W. Cosyn·M. Sargsian·C. Weiss
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Abstract

We discuss the process of deep-inelastic electron scattering (DIS) on the polarized deuteron with detection of a nucleon in the nuclear fragmentation region ("spectator tagging"). We cover (a) the general structure of the semi-inclusive DIS cross section on a spin-1 target; (b) the tagged structure functions in the impulse approximation, where deuteron structure is described by the $NN$ light-front wave function; (c) the extraction of free neutron structure through on-shell extrapolation in the recoil proton momentum. As an application we consider the extraction of the neutron spin structure function $g_{1n}$ through polarized electron scattering on the longitudinally polarized deuteron with proton tagging and on-shell extrapolation. Such measurements would be possible at an Electron-Ion Collider (EIC) with polarized deuteron beams and forward proton detectors.

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W. Cosyn, M. Sargsian, C. Weiss. 2016-09-07. Tagged spectator DIS on a polarized spin-1 target. https://arxiv.org/abs/1609.01970

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