Abstract
An interesting breakthrough in understanding the elusive inner content of nuclear systems in terms of partonic degrees of freedom is represented by deeply virtual Compton scattering processes. In such a way, tomographic view of nuclei and bound nucleons in coordinate space could be achieved for the first time. Moreover, nowadays experimental results for such a process considering ^44He targets recently released at Jefferson Lab are available. In this talk, the recent results of our rigorous Impulse Approximation for DVCS off ^44He, in terms of state-of-the-art models of the nuclear spectral function and of the parton structure of the bound proton, able to explain present data, has been shown.
Highlights
It has become clear that inclusive Deep Inelastic Scattering measurements do not allow to fully understand the elusive parton structure of nuclei and nucleons
In Deeply Virtual Compton Scattering (DVCS), the QCD content of the target is described through non-perturbative functions, the socalled generalized parton distributions (GPDs), which provide a wealth of novel information
Since ALU is the observable recently tested at Jefferson Lab (JLab) a realistic calculation of conventional nuclear effects corresponding to a plane wave impulse approximation analysis has been developed and presented in the following
Summary
It has become clear that inclusive Deep Inelastic Scattering measurements do not allow to fully understand the elusive parton structure of nuclei and nucleons. As a matter of fact, the quantitative understanding of the origin of the EMC effect [1], i.e. the nuclear medium modification to the parton structure of the bound nucleon still represents a fascinating puzzle to solve Promising insights in this respect are offered by a new generation of semiinclusive and exclusive experiments, performed in particular at Jefferson Lab (JLab). GPDs allow to achieve a 3-dimensional view of the inner parton content in the coordinate space In this talk, we will show the possibility to obtain a parton tomography of the target [6], either nucleus or nucleon. We propose a workable approach where conventional nuclear physics effects, described in terms of realistic wave functions, could be properly evaluated and not mistaken for exotic ones Such a kind of realistic calculations, very challenging, are possible for a few-body system A review of our main results obtained from the study of the handbag contribution to both DVCS channels, in Impulse Approximation (IA), is presented
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