Beam asymmetries in near-threshold omega photoproduction off the proton
- Klein, F.
- Anisovich, A.V.
- Bacelar, J.C.S.
- Bantes, B.
- Bartholomy, O.
- Bayadilov, D.
- Beck, R.
- Beloglazov, Y.A.
- Castelijns, R.
- Crede, V.
- Dutz, H.
- Ehmanns, A.
- Elsner, D.
- Essig, K.
- Ewald, R.
- Fabry, I.
- Fuchs, M.
- Funke, C.
- Gregor, R.
- Gridnev, A.B.
- Gutz, E.
- Höffgen, Stefan
- Hoffmeister, P.
- Horn, I.
- Jaegle, I.
- Junkersfeld, J.
- Kalinowsky, H.
- Kammer, S.
- Kleber, V.
- Klein, Friedrich
- Klempt, E.
- Konrad, M.
- Kotulla, M.
- Krusche, B.
- Lang, M.
- Lohner, H.
- Lopatin, I.V.
- Lotz, J.
- Lugert, S.
- Menze, D.
- Mertens, T.
- Messchendorp, J.G.
- Metag, V.
- Morales, C.
- Nanova, M.
- Nikonov, V.A.
- Novinski, D.V.
- Novotny, R.
- Ostrick, M.
- Pant, L.M.
- Pee, H. van
- Pfeiffer, M.
- Radkov, A.
- Roy, A.
- Sarantsev, A.V.
- Schmidt, C.
- Schmieden, H.
- Schoch, B.
- Shende, S.
- Sokhoyan, V.
- Süle, A.
- Sumachev, V.V.
- Szczepanek, T.
- Thoma, U.
- Trnka, D.
- Varma, R.
- Walther, D.
- Weinheimer, C.
- Wendel, C.
Publication date
January 2008
DOIAbstract
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
Add to ORKG