Journalartikel
Autorenliste: Mertens, T.; Jaegle, I.; Muehlich, P.; Bacelar, J. C. S.; Bantes, B.; Bartholomy, O.; Bayadilov, D. E.; Beck, R.; Beloglazov, Y. A.; Castelijns, R.; Crede, V.; Dutz, H.; Ehmanns, A.; Elsner, D.; Essig, K.; Ewald, R.; Fabry, I.; Fornet-Ponse, K.; Fuchs, M.; Funke, C.; Gothe, R.; Gregor, R.; Gridnev, A. B.; Gutz, E.; Hoeffgen, S.; Hoffmeister, P.; Horn, I.; Junkersfeld, J.; Kalinowsky, H.; Kammer, S.; Kleber, V.; Klein, Frank; Klein, Friedrich; Klempt, E.; Konrad, M.; Kotulla, M.; Krusche, B.; Lang, M.; Langheinrich, J.; Loehner, H.; Lopatin, I. V.; Lotz, J.; Lugert, S.; Menze, D.; Messchendorp, J. G.; Metag, V.; Morales, C.; Mosel, U.; Nanova, M.; Novinski, D. V.; Novotny, R.; Ostrick, M.; Pant, L. M.; van Pee, H.; Pfeiffer, M.; Radkov, A. K.; Roy, A.; Schadmand, S.; Schmidt, C.; Schmieden, H.; Schoch, B.; Shende, S. V.; Sokhoyan, V.; Suele, A.; Sumachev, V. V.; Szczepanek, T.; Thoma, U.; Trnka, D.; Varma, R.; Walther, D.; Weinheimer, C.; Wendel, C.
Jahr der Veröffentlichung: 2008
Seiten: 195-207
Zeitschrift: The European Physical Journal A
Bandnummer: 38
Heftnummer: 2
ISSN: 1434-6001
eISSN: 1434-601X
DOI Link: https://doi.org/10.1140/epja/i2007-10667-y
Verlag: Springer
Abstract:
The photoproduction of eta-mesons off C-12, Ca-40, Nb-93, and Pb-nat nuclei has been measured with a tagged photon beam with energies between 0.6 and 2.2 GeV. The experiment was performed at the Bonn ELSA accelerator with the combined setup of the Crystal Barrel and TAPS calorimeters. It aimed at the in-medium properties of the S-11(1535) nucleon resonance and the study of the absorption properties of nuclear matter for eta-mesons. Careful consideration was given to contributions from eta pi final states and secondary production mechanisms of eta-mesons, e.g. from inelastic pi N reactions of intermediate pions. The analysis of the mass number scaling shows that the nuclear absorption cross-section sigma(N eta) for eta-mesons is constant over a wide range of the eta momentum. The comparison of the excitation functions to data off the deuteron and to calculations in the framework of a BUU model show no unexplained in-medium modi. cations of the S-11(1535).
Zitierstile
Harvard-Zitierstil: Mertens, T., Jaegle, I., Muehlich, P., Bacelar, J., Bantes, B., Bartholomy, O., et al. (2008) Photoproduction of η-mesons off nuclei for Eγ ≤ 2.2 GeV, The European Physical Journal A, 38(2), pp. 195-207. https://doi.org/10.1140/epja/i2007-10667-y
APA-Zitierstil: Mertens, T., Jaegle, I., Muehlich, P., Bacelar, J., Bantes, B., Bartholomy, O., Bayadilov, D., Beck, R., Beloglazov, Y., Castelijns, R., Crede, V., Dutz, H., Ehmanns, A., Elsner, D., Essig, K., Ewald, R., Fabry, I., Fornet-Ponse, K., Fuchs, M., ...Wendel, C. (2008). Photoproduction of η-mesons off nuclei for Eγ ≤ 2.2 GeV. The European Physical Journal A. 38(2), 195-207. https://doi.org/10.1140/epja/i2007-10667-y
Schlagwörter
BARYON RESONANCES; BEAM ASYMMETRY; CROSS-SECTION; DEUTERON; EXCLUSIVE MEASUREMENT; IN-MEDIUM PROPERTIES; NEAR-THRESHOLD PHOTOPRODUCTION; PHOTOABSORPTION; PROTON
