Medium modifications of the bound nucleon GPDs and incoherent DVCS on nuclear targets

Abstract

We study incoherent DVCS on ${}^4$He in the ${}^4\mathrm{He}(e,e^{\prime }\gamma p)X$ reaction, which probes medium-modifications of the bound nucleon GPDs and elastic form factors. Assuming that the bound nucleon GPDs are modified in proportion to the corresponding bound nucleon elastic form factors, as predicted in the Quark-Meson Coupling model, we develop an approach to calculate various incoherent nuclear DVCS observables. As an example, we compute the beam-spin DVCS asymmetry, and predict the $x_B$- and $t$-dependence of the ratio of the bound to free proton asymmetries, $A_{\mathrm{LU}}^{p^{\ast }}(\varphi )/A_{\mathrm{LU}}^p(\varphi )$. We find that the deviation of $A_{\mathrm{LU}}^{p^{\ast }}(\varphi )/A_{\mathrm{LU}}^p(\varphi )$ from unity is as much as $\sim$ 6%.

16 pages, 6 figures. Minor editoral corrections, matches the published version in Phys. Lett. B 673 (2009) 9

References in corpus (2)

• EMC and Polarized EMC Effects in Nuclei
• The extraction of nuclear sea quark distribution and energy loss effect in Drell-Yan experiment

Cited by in corpus (13)

• 3D Structure and Nuclear Targets
• Exploring the Structure of the Bound Proton with Deeply Virtual Compton Scattering
• Coherent deeply virtual Compton scattering off ${}^4$He
• Medium Modifications of Hadron Properties and Partonic Processes
• Extracting generalized neutron parton distributions from 3He data
• Neutron orbital structure from generalized parton distributions of 3He
• Strong Interaction Physics at the Luminosity Frontier with 22 GeV Electrons at Jefferson Lab
• Pions valence quark distributions in asymmetric nuclear matter at finite temperature
• Catching a glimpse of the parton structure of the bound proton
• Incoherent deeply virtual Compton scattering off ${}^4$He
• Medium modifications of the bound nucleon GPDs and the quark contribution to the spin sum rule
• Nuclear effects in neutrinoproduction of pions
• Neutron DVCS Measurements with BONuS12 in CLAS12