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2011
Journal Article
Titel
Photoproduction of omega mesons on nuclei near the production threshold
Abstract
The photoproduction of omega mesons on LH2, C and Nb has been measured for incident photon energies from 900 to 1300MeV using the CB/TAPS detector at ELSA. The omega lineshape does not show any significant difference between the LH2 and the Nb targets. The experiment was motivated by transport calculations that predicted a sensitivity of the omega lineshape to in-medium modifications near the production threshold on a free nucleon of Egammalab = 1109MeV. A comparison with recent calculations is given.
Author(s)
Crede, V.
Helmholtz-Institut für Strahlen- und Kernphysik der Universität Bonn, Germany u. Department of Physics, Florida State University, Tallahassee, FL, USA
Kopf, B.
Institut für Kern- und Teilchenphysik TU Dresden, Germany / Physikalisches Institut, Universität Bochum, Germany
Langheinrich, J.
Physikalisches Institut, Universität Bonn, Germany / Physikalisches Institut, Universität Bochum, Germany
Pee, H. van
Helmholtz-Institut für Strahlen- und Kernphysik der Universität Bonn, Germany u. II. Physikalisches Institut, Universität Giessen, Germany
Thoma, U.
Helmholtz-Institut für Strahlen- und Kernphysik der Universität Bonn, Germany u. II. Physikalisches Institut, Universität Giessen, Germany