https://doi.org/10.1140/epja/i2008-10566-9
Regular Article - Experimental Physics
Measurement of the beam asymmetry Σ in πeta; production off the proton with the CBELSA/TAPS experiment⋆
1
Helmholtz-Institut für Strahlen- und Kernphysik der Universität Bonn, Germany
2
II. Physikalisches Institut, Universität Gießen, Germany
3
Petersburg Nuclear Physics Institute, Gatchina, Russia
4
Kernfysisch Versneller Instituut, Groningen, The Netherlands
5
Physikalisches Institut, Universität Bonn, Germany
6
Department of Physics, Florida State University, Tallahassee, USA
7
Institut für Physik, Universität Basel, Switzerland
* e-mail: gutz@hiskp.uni-bonn.de
Received:
2
January
2008
Accepted:
21
January
2008
Published online:
2
April
2008
In photoproduction experiments, a large number of final states yielding various resonance contributions are accessible. To extract resonance parameters via partial-wave analysis not only the measurement of differential cross-sections is necessary, but also the determination of polarization observables. At the electron accelerator ELSA (Bonn) the coherent bremsstrahlung method was used to generate a linearly polarized photon beam. Using the CBELSA/TAPS detector setup, the beam asymmetry Σ in the reaction γp → pπ0η was determined as a function of various masses and angles for photon energies between 970MeV and 1650MeV.
PACS: 13.60.-r Photon and charged-lepton interactions with hadrons – / 13.60.Le Meson production – / 13.88.+e Polarization in interactions and scattering –
© Società Italiana di Fisica and Springer-Verlag, 2008
