Measurement of the single-spin asymmetry $A_y^0$ in quasi-elastic $^3$He$^\uparrow$($e,e'n$) scattering at $0.4 < Q^2 < 1.0$ GeV$/c^2$

Abstract

Due to the lack of free neutron targets, studies of the structure of the neutron are typically made by scattering electrons from either 2 H or 3 He targets. In order to extract useful neutron information from a 3 He target, one must understand how the neutron in a 3 He system differs from a free neutron by taking into account nuclear effects such as final state interactions and meson exchange currents. The target single spin asymmetry A 0 y is an ideal probe of such effects,

Target normal single-spin asymmetry in inclusive electron-nucleon scattering with two-photon exchange: Analysis using 1/N expansion

“…These calculations predict values in the range 10 −4 -10 −3 , substantially smaller than the elastic TSSA. Measurements in DIS kinematics have been performed with a proton target at HERMES at 27.5 GeV beam en-ergy [20], and with a 3 He target at Jefferson Lab Hall A with beam energies 2.4, 3.6, and 5.9 GeV [21][22][23]. A nextgeneration measurement with proton target and electron and positron beams with energies from 2.2 to 6.6 GeV has been proposed at Jefferson Lab [24].…”

Neutron spin structure from e-3He scattering with double spectator tagging at the electron-ion collider

“…While our knowledge of the three-body system and nuclear corrections is good, it is clearly not perfect as has been shown experimentally [14,15,16,17]. Traditionally, one measures the DIS off the polarized 3 He to determine the virtual photon asymmetry A pendent proton polarization used as an input in extraction dominates the total systematic uncertainty [18].…”