English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Open

We study the deeply-virtual Compton scattering (DVCS) process $e^- N \to e^-\gamma \pi N$ involving the transition between a nucleon and a nucleonresonance in the $\pi N$ system, within the framework of generalized partondistributions (GPDs). For the four lowest-lying nucleon resonances,$\Delta(1232)$, $P_{11}(1440)$, $D_{13}(1520)$, and $S_{11}(1535)$, we expressthe DVCS amplitude in the Bjorken limit in terms of correspondingnucleon-to-resonance GPDs. Building upon the knowledge of the well studiedelectromagnetic nucleon-to-resonance transition form factors, which map thequark charge densities in transverse position space, the corresponding GPDswill open the prospect to also access the longitudinal momentum distributionsof quarks in the transition. We provide estimates for cross sections andbeam-spin asymmetries in the first and second $\pi N$ resonance regions in thekinematics of forthcoming CLAS12 data from Jefferson Lab.

Deeply-virtual Compton process $e^- N \to e^- \gamma \pi N$ to study nucleon to resonance transitions