Main Image
Volume 297 - XXV International Workshop on Deep-Inelastic Scattering and Related Subjects (DIS2017) - WG6 Spin and 3D Structure
Ratios of helicity amplitudes for hard exclusive _0 electroproduction on transversely polarized protons
C. Van Hulse
Full text: pdf
Pre-published on: 2017 December 31
Published on: 2018 January 16
Abstract
The HERMES experiment collected a wealth of deep-inelastic scattering data using the 27.6 GeV polarized lepton beam at HERA and various pure gas targets, both unpolarized and polarized. This allowed for a series of diverse measurements. Among them are measurements of hard exclusive meson production, which provide information on generalized parton distributions (GPDs), in a complementary way to, e.g., deeply virtual Compton scattering. Access to these GPDs is possible through the measurement of helicity-amplitude ratios. Helicity-amplitude ratios from exclusive ρ0 production on transversely polarized hydrogen are presented and discussed as well as compared to the theoretical ‘GK’ model.
DOI: https://doi.org/10.22323/1.297.0254
Open Access
Creative Commons LicenseCopyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.