Transversity in exclusive vector-meson leptoproduction

Abstract

The role of transversity or helicity-flip generalized parton distributions (GPDs) in leptoproduction of vector mesons is investigated within the framework of the handbag approach. The transversity GPDs in combination with twist-3 meson wave functions, occur in the amplitudes for transitions from a transversely polarized virtual photon to a longitudinal polarized vector meson. The importance of the transversity GPDs can be examined in some of the spin density matrix elements and in transverse target spin asymmetries. Using suitable parametrizations of both helicity-flip and non-flip GPDs, which are essentially taken from our previous papers, we estimate these observables and compare the results with available data.

30 pages, 19 figures

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Cited by in corpus (22)

• Nucleon structure from basis light-front quantization
• Beyond-Standard-Model Tensor Interaction and Hadron Phenomenology
• Chiral-odd generalized parton distributions for proton in a light-front quark-diquark model
• The pion pole in hard exclusive vector-meson leptoproduction
• Helicity-dependent generalized parton distributions for nonzero skewness
• Transverse target spin asymmetries in exclusive ${\rho }^0$ muoproduction
• Tomography of light mesons in light-cone quark model
• The exclusive limit of the pion-induced Drell-Yan process
• Exclusive production of quarkonia pairs in collinear factorization framework
• Status of DVMP, DVCS and GPDs
• Ratios of helicity amplitudes for exclusive ${\rho }^0$ electroproduction on transversely polarized protons
• Spin Density Matrix Elements in Exclusive $\omega$ Meson Muoproduction ${}^{\ast }$
• Extracting transition generalized parton distributions from hard exclusive pion-nucleon scattering
• Exclusive $\omega$ meson muoproduction on transversely polarised protons
• The role of the GPD E in the determination of the parton angular momenta
• Wide-angle photo- and electroproduction of pions to twist-3 accuracy
• Wigner distributions and GTMDs in a proton using light-front quark-diquark model
• Crossed channel analysis of quark and gluon generalized parton distributions with helicity flip
• Twist-3 contribution to deeply virtual electroproduction of pions
• Accessing Compton Form Factors at the Electron Ion Collider in China: An Impact study on $\text{Im}\mathcal{E}$
• Chiral-odd generalized parton distributions for the low-lying octet baryons
• The GPD program at COMPASS