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Beam asymmetries in near-threshold ω photoproduction off the proton

Klein, Frank and Anisovich, A. V. and Bacelar, J. C. S. and Bantes, B. and Bartholomy, O. and Bayadilov, D. and Beck, R. and Beloglazov, Y. A. and Castelijns, R. and Crede, V. and Dutz, H. and Ehmanns, A. and Elsner, D. and Essig, K. and Ewald, R. and Fabry, I. and Fuchs, M. and Funke, Ch. and Gregor, R. and Gridnev, A. B. and Gutz, E. and Hoeffgen, S. and Hoffmeister, P. and Horn, I. and Jaegle, I. and Junkersfeld, J. and Kalinowsky, H. and Kammer, S. and Kleber, V. and Klein, Friedrich and Klempt, E. and Konrad, M. and Kotulla, M. and Krusche, B. and Lang, M. and Loehner, H. and Lopatin, I. V. and Lotz, J. and Lugert, S. and Menze, D. and Mertens, T. and Messchendorp, J. G. and Metag, V. and Morales, C. and Nanova, M. and Nikonov, V. A. and Novinski, D. and Novotny, R. and Ostrick, M. and Pant, L. M. and van Pee, H. and Pfeiffer, M. and Radkov, A. and Roy, A. and Sarantsev, A. V. and Schmidt, C. and Schmieden, H. and Schoch, B. and Shende, S. V. and Sokhoyan, V. and Suele, A. and Sumachev, V. V. and Szczepanek, T. and Thoma, U. and Trnka, D. and Varma, R. and Walther, D. and Weinheimer, Ch. and Wendel, Ch.. (2008) Beam asymmetries in near-threshold ω photoproduction off the proton. Physical review. D, Particles, fields, gravitation and cosmology, Vol. 78, H. 11 , 117101, 5 S..

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Official URL: http://edoc.unibas.ch/dok/A5261912

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Abstract

The photoproduction of omega mesons off protons has been studied at the Bonn ELSA accelerator from threshold to E-gamma = 1700 MeV. Linearly polarized beams were produced via coherent bremsstrahlung. Large photon asymmetries in excess of 50% were obtained. For the first time the pion asymmetries associated with the omega -< pi(0)gamma decay were measured and found close to zero. The asymmetries indicate s-channel resonance formation on top of t-channel exchange processes.
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Hadronenphysik (Krusche)
UniBasel Contributors:Krusche, Bernd
Item Type:Article, refereed
Article Subtype:Research Article
Bibsysno:Link to catalogue
Publisher:American Institute of Physics
ISSN:0556-2821
Note:Variant title: Beam asymmetries in near-threshold omega photoproduction off the proton -- Publication type according to Uni Basel Research Database: Journal article
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Last Modified:22 Mar 2012 14:26
Deposited On:22 Mar 2012 13:52

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