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Measurement of the helicity asymmetry E for the reaction gamma p -> pi(0)p

Gottschall, M. and Afzal, F. and Anisovich, A. V. and Bayadilov, D. and Beck, R. and Bichow, M. and Brinkmann, K. Th. and Crede, V. and Dieterle, M. and Dietz, F. and Dutz, H. and Eberhardt, H. and Elsner, D. and Ewald, R. and Fornet-Ponse, K. and Friedrich, St. and Frommberger, F. and Gridnev, A. and Gruner, M. and Gutz, E. and Hammann, Ch. and Hannappel, J. and Hartmann, J. and Hillert, W. and Hoffmeister, Ph. and Honisch, Ch. and Jude, T. and Kammer, S. and Kalinowsky, H. and Keshelashvili, I. and Klassen, P. and Klein, F. and Klempt, E. and Koop, K. and Krusche, B. and Kube, M. and Lang, M. and Lopatin, I. and Mahlberg, P. and Makonyi, K. and Metag, V. and Meyer, W. and Muller, J. and Mullers, J. and Nanova, M. and Nikonov, V. and Novotny, R. and Piontek, D. and Reicherz, G. and Rostomyan, T. and Sarantsev, A. and Schmidt, Ch. and Schmieden, H. and Seifen, T. and Sokhoyan, V. and Spieker, K. and Thiel, A. and Thoma, U. and Urban, M. and Pee, H. van and Walther, D. and Wendel, Ch. and Werthmuller, D. and Wiedner, U. and Wilson, A. and Winnebeck, A. and Witthauer, L. and Wunderlich, Y.. (2021) Measurement of the helicity asymmetry E for the reaction gamma p -> pi(0)p. EUROPEAN PHYSICAL JOURNAL A, 57 (1). p. 40.

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Official URL: https://edoc.unibas.ch/87248/

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Abstract

A measurement of the double-polarization observable E for the reaction γp→π0p is reported. The data were taken with the CBELSA/TAPS experiment at the ELSA facility in Bonn using the Bonn frozen-spin butanol (C4H9OH) target, which provided longitudinally-polarized protons. Circularly-polarized photons were produced via bremsstrahlung of longitudinally-polarized electrons. The data cover the photon energy range from Eγ=600 to 2310 MeV and nearly the complete angular range. The results are compared to and have been included in recent partial wave analyses.
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Hadronenphysik (Krusche)
UniBasel Contributors:Krusche, Bernd
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Springer Link
ISSN:1434-6001
Note:Publication type according to Uni Basel Research Database: Journal article
Identification Number:
Last Modified:24 Jan 2022 17:04
Deposited On:24 Jan 2022 17:04

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