Journalartikel
Autorenliste: Thiel, A.; Eberhardt, H.; Lang, M.; Afzal, F.; Anisovich, A. V.; Bantes, B.; Bayadilov, D.; Beck, R.; Bichow, M.; Brinkmann, K. -T.; Boese, S.; Crede, V.; Dieterle, M.; Dutz, H.; Elsner, D.; Ewald, R.; Fornet-Ponse, K.; Friedrich, St.; Frommberger, F.; Funke, Ch.; Goertz, St.; Gottschall, M.; Gridnev, A.; Gruener, M.; Gutz, E.; Hammann, D.; Hammann, Ch.; Hannappel, J.; Hartmann, J.; Hillert, W.; Hoffmeister, Ph.; Honisch, Ch.; Jude, T.; Kaiser, D.; Kalinowsky, H.; Kalischewski, F.; Kammer, S.; Keshelashvili, I.; Klassen, P.; Kleber, V.; Klein, F.; Klempt, E.; Koop, K.; Krusche, B.; Kube, M.; Lopatin, I.; Mahlberg, Ph.; Makonyi, K.; Metag, V.; Meyer, W.; Mueller, J.; Muellers, J.; Nanova, M.; Nikonov, V.; Piontek, D.; Reeve, S.; Reicherz, G.; Runkel, S.; Sarantsev, A.; Schmidt, Ch.; Schmieden, H.; Seifen, T.; Sokhoyan, V.; Spieker, K.; Thoma, U.; Urban, M.; van Pee, H.; Walther, D.; Wendel, Ch.; Wilson, A.; Winnebeck, A.; Witthauer, L.
Jahr der Veröffentlichung: 2017
Zeitschrift: The European Physical Journal A
Bandnummer: 53
Heftnummer: 1
ISSN: 1434-6001
eISSN: 1434-601X
DOI Link: https://doi.org/10.1140/epja/i2017-12194-8
Verlag: Springer
Abstract:
This paper reports on a measurement of the double-polarization observable G in pi(0) photoproduction off the proton using the CBELSA/TAPS experiment at the ELSA accelerator in Bonn. The observable G is determined from reactions of linearly polarized photons with longitudinally polarized protons. The polarized photons are produced by bremsstrahlung off a diamond radiator of well-defined orientation. A frozen spin butanol target provides the polarized protons. The data cover the photon energy range from 617 to 1325MeV and a wide angular range. The experimental results for G are compared to predictions by the Bonn-Gatchina (BnGa), Julich-Bonn (JuBo), MAID and SAID partial wave analyses. Implications of the new data for the pion photoproduction multipoles are discussed.
Zitierstile
Harvard-Zitierstil: Thiel, A., Eberhardt, H., Lang, M., Afzal, F., Anisovich, A., Bantes, B., et al. (2017) Double-polarization observable G in neutral-pion photoproduction off the proton, The European Physical Journal A, 53(1), Article 8. https://doi.org/10.1140/epja/i2017-12194-8
APA-Zitierstil: Thiel, A., Eberhardt, H., Lang, M., Afzal, F., Anisovich, A., Bantes, B., Bayadilov, D., Beck, R., Bichow, M., Brinkmann, K., Boese, S., Crede, V., Dieterle, M., Dutz, H., Elsner, D., Ewald, R., Fornet-Ponse, K., Friedrich, S., Frommberger, F., ...Witthauer, L. (2017). Double-polarization observable G in neutral-pion photoproduction off the proton. The European Physical Journal A. 53(1), Article 8. https://doi.org/10.1140/epja/i2017-12194-8
Schlagwörter
BONN; ELSA; MULTIPOLES; PI(0) PHOTOPRODUCTION; QUARK-MODEL; REACTION GAMMA-P
