Hard exclusive pion leptoproduction

Abstract

In this talk it is reported on an analysis of hard exclusive leptoproduction of pions within the handbag approach. It is argued that recent measurements of this process performed by HERMES and CLAS clearly indicate the occurrence of strong contributions from transversely polarized photons. Within the handbag approach such gamma*_T -> pi transitions are described by the transversity GPDs accompanied by twist-3 pion wave functions. It is shown that the handbag approach leads to results on cross sections and single-spin asymmetries in fair agreement with experiment. Predictions for other pseudoscalar meson channels are also briefly discussed.8 pages

8 pages, 8 figures, uses svglov2.clo and svjour2.cls talk presented at the ECT* workshop "Nucleon Resonances: From Photoproduction to High Photon Virtualities

References in corpus (6)

• Transverse spin structure of the nucleon from lattice QCD simulations
• Charged pion form factor between $Q^2$=0.60 and 2.45 GeV${}^2$. I. Measurements of the cross section for the ${}^1$H($e,e^{\prime }{\pi }^{+}$)$n$ reaction
• Nucleon Tensor Charge from Exclusive ${\pi }^o$ Electroproduction
• Deeply Virtual Meson Production on the nucleon
• The pion pole in hard exclusive vector-meson leptoproduction
• Hadron Tomography

Cited by in corpus (6)

• Spatial imaging of proton via leading-twist non-skewed GPDs with basis light-front quantization
• Accessing chiral-even quark generalised parton distributions in the exclusive photoproduction of a $\gamma {\pi }^{\pm }$ pair with large invariant mass in both fixed-target and collider experiments
• Progress and Opportunities in Backward angle (u-channel) Physics
• Target and Double Spin Asymmetries of Deeply Virtual ${\pi }^0$ Production with a Longitudinally Polarized Proton Target and CLAS
• Generalized Parton Distributions from charged current meson production
• Study of transversity GPDs from pseudoscalar mesons production at EIC of China