Distorted spin-dependent spectral function of an A=3 nucleus and semi-inclusive deep inelastic scattering processes

Abstract

The distorted spin-dependent spectral function of a nucleon inside an A=3 nucleus is introduced as a novel tool for investigating the polarized electron scattering off polarized ${}^3$He in semi-inclusive DIS regime (SiDIS), going beyond the standard plane wave impulse approximation. This distribution function is applied to the study of the spectator SiDIS, $\overrightarrow{{}^3\mathrm{He}}(\vec{e},e^{\prime }{}^2\mathrm{H})X$, in order to properly take into account the final state interaction between the hadronizing quark and the detected deuteron, with the final goal of a more reliable extraction of the polarized parton-distribution $g_1(x)$ inside a bound proton. Our analysis allows to single out two well-defined kinematical regions where the experimental asymmetries could yield very interesting information: the region where the final state effects can be minimized, and therefore the direct access to the parton distributions in the proton is feasible, and the one where the final state interaction dominates, and the spectator SiDIS reactions can elucidate the mechanism of the quark hadronization itself. The perspectives of extending our approach i) to the mirror nucleus, ${}^3$H, for achieving a less model-dependent flavor decomposition, and ii) to the asymmetries measured in the standard SiDIS reactions, $\vec{e}+\overrightarrow{{}^3\mathrm{He}}\to e^{\prime }+h+X$ with $h$ a detected fast hadron, with the aim of extracting the neutron transversity, are discussed.

28 pages + 14 figures. Submitted to Phys. Rev. C

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Cited by in corpus (12)

• 3D Structure and Nuclear Targets
• Light-Front spin-dependent Spectral Function and Nucleon Momentum Distributions for a Three-Body System
• Light-Front Dynamics and the 3He Spectral Function
• Final state interactions and the extraction of neutron single spin asymmetries from SIDIS by a transversely polarized ${}^3$He target
• Towards an improved description of SiDIS by a polarized 3He target
• The European Muon Collaboration effect in Light-Front Hamiltonian Dynamics
• Tagged EMC Measurements on Light Nuclei
• A Light-Front approach to the ${}^3$He spectral function
• EMC effect, few-nucleon systems and Poincaré covariance
• Polarized ${}^3$He target and final state interactions in SiDIS
• The 3He spectral function in light-front dynamics
• Three--Dimensional parton structure of light nuclei