Deeply-virtual and photoproduction of pseudoscalar mesons at higher-order and higher-twist

28 Mar 2023, 12:10
20m
105AB (MSU Kellogg Center)

105AB

MSU Kellogg Center

Parallel talk WG5: Spin and 3D Structure WG5

Speaker

Kornelija Passek-Kumerički (Ruđer Bošković Institute, Zagreb, Croatia)

Description

Both deeply-virtual and photoproduction of mesons offer promising access
to generalized parton distributions and complementary description of different kinematical regions. The higher-order contributions offer stabilizing effect with respect to the dependence on renormalization scales, while higher-twist effects have been identified as especially important in the case of the production of pseudo-scalar mesons. This was confirmed by recent evaluation of the complete twist-3 contribution to $\pi$ and $\eta$ ($\eta'$) production and its confrontation with experimental data.

Submitted on behalf of a Collaboration? No

Primary author

Kornelija Passek-Kumerički (Ruđer Bošković Institute, Zagreb, Croatia)

Co-author

Peter Kroll (University of Wuppertal, Germany)

Presentation materials