Contribution to a conference proceedings/Internal Report

PUBDB-2015-05688

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Polarization Observables $T$ and $F$ in single $\pi^0$- and $\eta$-Photoproduction off quasi-free Nucleons

Strub, T. (Corresponding author)

2014
Deutsches Elektronen-Synchrotron, DESY Hamburg

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Please use a persistent id in citations: doi:10.3204/DESY-PROC-2014-04/175

Report No.: DESY-PROC-2014-04

Abstract: Meson photoproduction has developed into a powerful tool to study the nucleon excitation spectrum and test effective quark models which operate in the non-perturbative regime of QCD. An insight into the $J^P$ configurations and isospin decompositions of the contributing resonances is gained by measuring a minimal set of polarization observables on both the proton and the neutron.Single $\pi^0$- and $\eta$-photoproduction off a transversally polarized d-butanol target has been measured with circularly polarized bremsstrahlung photons generated by the MAMI-C electron microtron. With the nearly $4\pi$ acceptance of the combined Crystal Ball/TAPS setup the double polarization observable $F$ and the target asymmetry $T$ can be extracted for the first time for polarized, quasi-free neutrons over a wide energy and angular range.

Keyword(s): excited state: spectrum ; photon: bremsstrahlung ; meson: photoproduction ; electron: microtron ; target: asymmetry ; polarization ; nucleon ; quantum chromodynamics ; nonperturbative ; Crystal Ball ; quark model ; acceptance ; isospin

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Contributing Institute(s):

1. LHC/ATLAS Experiment (ATLAS)
2. LHC/CMS Experiment (CMS)
3. Uni Hamburg / Experimentalphysik (UNI/EXP)

Research Program(s):

1. 611 - Fundamental Particles and Forces (POF3-611) (POF3-611)

Experiment(s):

1. No specific instrument

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Database coverage:

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Linked articles:

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Book/Proceedings/Internal Report Schmidt, A. (Editor)>Extern* ; Sander, C. (Editor)DESY*
Proceedings, 20th International Conference on Particles and Nuclei (PANIC 14)
2014Panic2014, Panic2014, HamburgHamburg, Germany, 25 Aug 2014 - 29 Aug 20142014-08-252014-08-29 Hamburg : Deutsches Elektronen-Synchrotron, DESY 1-754 (2014) [10.3204/DESY-PROC-2014-04]2014     Files  Fulltext BibTeX | EndNote: XML, Text | RIS

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