Longitudinal spin asymmetries in polarized deuteron DIS with spectator tagging Conference

Cosyn, W, Weiss, C. (2018). Longitudinal spin asymmetries in polarized deuteron DIS with spectator tagging . 346

cited authors

  • Cosyn, W; Weiss, C

authors

abstract

  • Polarized electron-deuteron DIS with spectator proton tagging offers a way of measuring the neutron spin structure functions with maximal theoretical control of nuclear effects. We calculate the nuclear structure factors in the longitudinal double-spin asymmetries using methods of light-front nuclear structure. A unique feature of the spin-1 system is that spin asymmetries can be formed either relative to the cross section in all three spin states (λd = ±1,0) or in the two maximum-spin states only (±1, involving tensor polarization). We find that the two-state deuteron spin asymmetry at small spectator proton momenta permits accurate extraction of the neutron structure function g1n. Such measurements could be performed at a future electron-ion collider (EIC) with polarized deuteron beams and suitable forward detectors.

publication date

  • January 1, 2018

volume

  • 346