Authors:	Cividini, Federico
Title:	Measurement of the helicity dependence for single π0 photoproduction on the deuteron
Online publication date:	22-May-2020
Year of first publication:	2020
Language:	english
Abstract:	The subject of this thesis is the measurement of the helicity dependence of single π0 photoproduction with deuteron target in the energy region from pion threshold up to 1500 MeV. This work is part of a systematic measurement of the excited states of the nucleon performed by the A2@MAMI collaboration. Because the electromagnetic excitations are isospin dependent, it is fundamental to study the excited states both of the proton and of the neutron. The experimental data were collected using the circularly photon beam and the large acceptance Crystal Ball/TAPS detector available in the taggerhall at MAMI, in combination with the Mainz-Dubna frozen spin target, that provides a highly longitudinal polarized deuteron target. The new results of the single π 0 inclusive polarized photoproduction cross section on the deuteron and of the E observable for single π 0 photoproduction on quasi-free protons and quasi free-neutrons provide addition information and input for the theoretical models, particularly important especially for the neutron channel.
DDC:	530 Physik 530 Physics
Institution:	Johannes Gutenberg-Universität Mainz
Department:	FB 08 Physik, Mathematik u. Informatik
Place:	Mainz
ROR:	https://ror.org/023b0x485
DOI:	http://doi.org/10.25358/openscience-1643
URN:	urn:nbn:de:hebis:77-diss-1000035189
Version:	Original work
Publication type:	Dissertation
License:	In Copyright
Information on rights of use:	https://rightsstatements.org/vocab/InC/1.0/
Extent:	XIV, 203 Seiten
Appears in collections:	JGU-Publikationen