Measurement of π0π+/− photoproduction off the deuteron and dbutanol targets

Autor:	Debdeep Ghosal
Jazyk:	angličtina
Rok vydání:	2019
Předmět:	Physics Photon Meson Proton QC1-999 Nuclear Theory Observable Nuclear physics Isospin Neutron Nucleon Nuclear Experiment Crystal Ball
Zdroj:	EPJ Web of Conferences, Vol 199, p 02010 (2019) EPJ Web of Conferences, Vol 241, p 01006 (2020)
Popis:	Recent experiments using the Crystal Ball/TAPS setup at the MAMI accelerator in Mainz, Germany continue to study the properties and the excitation spectrum of the nucleon with meson photoproduction. Electromagnetic excitations of the proton and neutron are essential for understanding their isospin decomposition. The electromagnetic coupling of photons to protons is different than that of neutrons in certain states. Cross-section data alone is not sufficient for separating resonances, whereas polarization observables play a crucial role being essential in disentangling the contributing resonant and non-resonant amplitudes. Preliminary results of the polarization observable E of double π production off an unpolarized (LD2) and polarized (dButanol) target are shown with comparison to predictions of recent analyses.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5c8d2c31306dfcefa1f91c7df29802e6 https://www.epj-conferences.org/articles/epjconf/pdf/2019/04/epjconf_meson2019_02010.pdf Zobrazit plný text záznamu