Year: 2022
Type: article
Abstract: We present the first systematic feasibility study of accessing generalized parton distributions of the pion at an electron-ion collider through deeply virtual Compton scattering. Relying on state-of-the-art models for pion GPDs, we show that quarks and gluons interfere destructively, modulating the expected event rate and maximizing it when parton content is generated via radiation from valence dressed quarks. Moreover, gluons are found to induce a sign inversion for the beam-spin asymmetry in every model studied, being a clear signal for pinning down the regime of gluon superiority.
Source: Physical Review Letters
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $3,750
Awards: G1610782679, G1665230847, G1953887145, G2975204196, Idex Paris-Saclay, The strong interaction at the frontier of knowledge: fundamental research and applications, G3690828678, G3919102410, G3996757827, G434337789, G453658663, G4866930200, G5112260952, G6277277183, G666858036, G6757515635, G7240651115, G7451223319, Physics of the 2 infinities and the origins
OpenAlex ID: W3207360136
