Photoproduction of positive pions from hydrogen with PHOENICS at ELSA |
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Authors: | K. Bü chler, K. H. Althoff, G. Anton, J. Arends, W. Beulertz, M. Breuer, P. Detemple, H. Dutz, E. Kohlgarth, D. Kr mer, W. Meyer, G. N ldeke, W. Schneider, W. Thiel,B. Zucht |
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Affiliation: | Physikalisches Institut, University of Bonn, Nussallee 12, D-53115, Bonn, Germany |
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Abstract: | The differential cross section of the reaction γp→π+n has been measured with the PHOENICS detector at ELSA in Bonn. For the first time this cross section has been determined simultaneously over a large range of photon energies (Eγ = 220−900 MeV) and pion angles (Θc.m.pi = 35°−135°) with a tagged photon facility. The experimental set-up allowed a considerable kinematic overdetermination of the investigated reaction. Accordingly, the background contributions have been suppressed to below 1%. The measured differential cross section is in good agreement with existing data. The comparison with different model calculations is presented. |
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Keywords: | Nuclear reactions |
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