25th International Workshop on Deep Inelastic Scattering and Related Topics

Ratios of helicity amplitudes for hard exclusive ρ0 electroproduction on transversely polarized protons at HERMES

5 Apr 2017, 10:12

18m

West Building Seminar Room 1

WG6) Spin and 3D Structure WG6 Spin and 3D Structure

Speaker

Charlotte Van Hulse

Description

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 on hard exclusive meson production, which provide information on generalized parton distributions (GPDs), in a com-plementary 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 protons are presented and discussed as well as compared to a theoretical model [1, 2].

[1] S. V. Goloskokov and P. Kroll, Eur. Phys. J. C 50, 829 (2007).

[2] S. V. Goloskokov and P. Kroll, Eur. Phys. J. C 53, 367 (2008).

Presentation materials

dis17_charlotte.pdf