Neutral-pion photoproduction off protons in the energy range 0.3 GeV <E(gamma)<3 GeV
- Bartholomy, O.
- Crede, V.
- van Pee, H.
- Anisovich, A.V.
- Anton, G.
- Bantes, R.
- Beloglazov, Yu.
- Bogendorfer, R.
- Castelijns, R.J.J.
- Ehmanns, A.
- Ernst, J.M.P.G.
- Fabry, I.
- Flemming, H.
- Fosel, A.
- Freiesleben, H.
- Fuchs, M.
- Funke, Ch.
- Gothe, R.
- Gridnev, A.
- Gutz, E.
- Höffgen, S.K.
- Horn, I.
- Hossl, J.
- Joosten, R.
- Junkersfeld, J.
- Kalinowsky, H.
- Klein, F
- Klempt, E.
- Koch, H.R.
- Konrad, M.
- Kopf, B.
- Krusche, B.
- Langheinrich, J.
- Löhner, H.
- Lopatin, I.
- Lotz, J.
- Matthay, H.
- Menze, D.W.
- Messchendorp, J.G.
- Morales, C.
- Novinski, D.
- Ostrick, M.
- Radkov, A.
- Reinnarth, J.
- Sarantsev, A.V.
- Schadmand, S.
- Schmidt, Ch.
- Schmieden, H.
- Schoch, B.
- Suft, G.
- Sumachev, V.
- Szczepanek, T.
- Thoma, U.
- Walther, D.
- Weinheimer, Ch.
Publication date
January 2005
DOIAbstract
Single pi(0) photoproduction has been studied with the CB-ELSA experiment at Bonn using tagged photon energies between 0.3 and 3.0 GeV. The experimental setup covers a very large solid angle of similar to98% of 4pi. Differential cross sections dsigma/dOmega have been measured. Complicated structures in the angular distributions indicate a variety of different resonances being produced in the s channel intermediate state gammap-->N(*)(Delta(*))-->ppi(0). A combined analysis including the data presented in this letter along with other data sets reveals contributions from known resonances and evidence for a new resonance N(2070)D(15).</p
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