Measurement of the beam asymmetry Σ in πeta; production off the proton with the CBELSA/TAPS experiment

. In photoproduction experiments, a large number of final states yielding various resonance contributions are accessible. To extract resonance parameters via partial-wave analysis not only the measurement of differential cross-sections is necessary, but also the determination of polarization observa...

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Veröffentlicht in:	The European physical journal. A, Hadrons and nuclei Hadrons and nuclei, 2008-03, Vol.35 (3), p.291-293
Hauptverfasser:	Gutz, E., Sokhoyan, V., van Pee, H., Anisovich, A. V., Bacelar, J. C. S., Bantes, B., Bartholomy, O., Bayadilov, D., Beck, R., Beloglazov, Y. A., Castelijns, R., Credé, V., Dutz, H., Ehmanns, A., Elsner, D., Essig, K., Ewald, R., Fabry, I., Fornet-Ponse, K., Fuchs, M., Funke, Ch, Gothe, R., Gregor, R., Gridnev, A. B., Höffgen, St, Hoffmeister, P., Horn, I., Jägle, I., Junkersfeld, J., Kalinowsky, H., Kammer, S., Kleber, V., Klein, Friedrich, Klein, Frank, Klempt, E., Konrad, M., Kotulla, M., Krusche, B., Lang, M., Langheinrich, J., Löhner, H., Lopatin, I. V., Lotz, J., Lugert, S., Menze, D., Mertens, T., Messchendorp, J. G., Metag, V., Morales, C., Nanova, M., Nikonov, V. A., Novinsky, D., Novotny, R., Ostrick, M., Pant, L., Pfeiffer, M., Radkov, A., Sarantsev, A. V., Schadmand, S., Schmidt, Ch, Schmieden, H., Schoch, B., Shende, S., Süle, A., Sumachev, V. V., Szczepanek, T., Thoma, U., Trnka, D., Walther, D., Weinheimer, Ch, Wendel, Ch
Format:	Artikel
Sprache:	eng
Schlagworte:	Hadrons Heavy Ions Nuclear Fusion Nuclear Physics Particle and Nuclear Physics Physics Physics and Astronomy Regular Article - Experimental Physics
Online-Zugang:	Volltext
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Beschreibung
Zusammenfassung:	. In photoproduction experiments, a large number of final states yielding various resonance contributions are accessible. To extract resonance parameters via partial-wave analysis not only the measurement of differential cross-sections is necessary, but also the determination of polarization observables. At the electron accelerator ELSA (Bonn) the coherent bremsstrahlung method was used to generate a linearly polarized photon beam. Using the CBELSA/TAPS detector setup, the beam asymmetry Σ in the reaction γ p → p π 0 η was determined as a function of various masses and angles for photon energies between 970MeV and 1650MeV.
ISSN:	1434-6001 1434-601X
DOI:	10.1140/epja/i2008-10566-9