Probing transversity GPDs in diffractive electroproduction on the proton and deuteron at an electron-ion collider

Apr 10, 2019, 4:15 PM
Cavallerizza Reale - Aula Magna

Cavallerizza Reale - Aula Magna

Via Verdi, 9 Turin
Parallel Session Talk WG7: Future of DIS Joint WG2+WG7: Small-x and Diff + Future of DIS


Wim Cosyn


A future electron-ion collider (EIC) with forward detectors would allow for measurements of coherent production of two vector mesons on proton and deuteron targets. In kinematics where the two vector mesons are separated by a large rapidity gap, one vector meson is produced at large transverse momenta and the other is transversily polarized, this process can probe the transversity generalized parton distributions of the respective targets. We show estimates for $a$ cross sections of the $\gamma^* N \rightarrow \rho \rho N'$, $\gamma^* D \rightarrow \rho \omega N$ and $\gamma^* D \rightarrow \rho \phi N$ processes at EIC kinematics, illustrating the feasibility of these measurements.

Primary authors

Wim Cosyn Prof. Bernard Pire (Centre de Physique Théorique, École Polytechnique, CNRS, 91128 Palaiseau, France) Prof. Lech Szymanowski (National Centre for Nuclear Research,Warsaw, Poland)

Presentation materials