Final-state interactions in deep-inelastic scattering from a tensor polarized deuteron target

1st Tensor Polarized Solid Target Workshop

Cosyn, W.^1 ; Sargsian, M.^2

Department of Physics and Astronomy, Ghent University, Proeftuinstraat 86, Gent

9000, Belgium^1

Department of Physics, Florida International University, Miami

FL

33199, United States^2

关键词: Deep inelastic scattering;    Eikonal approximations;    Final state interactions;    Jefferson Lab;    Neutron components;    Polarized deuterons;    Resonance region;    Tensor asymmetry;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/543/1/012006/pdf
DOI  :  10.1088/1742-6596/543/1/012006

来源: IOP

【 摘 要 】

Deep-inelastic scattering (DIS) from a tensor polarized deuteron is sensitive to possible non-nucleonic components of the deuteron wave function. To accurately estimate the size of the nucleonic contribution, final-state interactions (FSIs) need to be accounted for in calculations. We outline a model that, based on the diffractive nature of the effective hadron-nucleon interaction, uses the generalized eikonal approximation to model the FSIs in the resonance region, taking into account the proton-neutron component of the deuteron. The calculation uses a factorized model with a basis of three resonances with mass W zzfor kinematics accessible in experiments at Jefferson Lab and Hermes. For inclusive DIS, sizeable effects are found when including FSIs for Bjorken x > 0.2, but the overall size of Azzremains small. For tagged spectator DIS, FSIs effects are largest at spectator momenta around 300 MeV and for forward spectator angles.