Photoproduction of pmesons from nuclei.

Authors :: Krusche, B.
Lehr, J.
Ahrens, J.
Annand, J.
Beck, R.
Bloch, F.
Fog, L.
Hornidge, D.
Janssen, S.
Kotulla, M.
McGeorge, J.
MacGregor, I.
Messchendorp, J.
Metag, V.
Mosel, U.
Novotny, R.
Owens, R.
Pfeiffer, M.
Sanderson, R.
Schadmand, S.
Source :: European Physical Journal A -- Hadrons & Nuclei; Nov2004, Vol. 22 Issue 2, p277-291, 15p
Publication Year :: 2004
Abstract: Photoproduction of neutral pions from nuclei (carbon, calcium, niobium, lead) has been studied for incident-photon energies from 200 MeV to 800 MeV with the TAPS detector using the Glasgow photon tagging spectrometer at the Mainz MAMI accelerator. Data were obtained for the inclusive photoproduction of neutral pions and the partial channels of quasifree single-p<superscript>0</superscript>, double-p<superscript>0</superscript>, and p<superscript>0</superscript>p<superscript>±</superscript> photoproduction. They have been analyzed in terms of the in-medium behavior of nucleon resonances and the pion-nucleus interaction. They are compared to earlier measurements from the deuteron and to the predictions of a Boltzmann-Uehling-Uhlenbeck (BUU) transport model for photon-induced pion production from nuclei. [ABSTRACT FROM AUTHOR]