Helicity dependence of the γd → πNN reactions in the Δ-resonance region
The European physical journal : A. Bd. 44. H. 2. Berlin: Springer 2010 S. 189 - 201
Erscheinungsjahr: 2010
ISBN/ISSN: 1434-6001 ; 1434-601X
Publikationstyp: Zeitschriftenaufsatz
Sprache: Englisch
Doi/URN: 10.1140/epja/i2010-10946-6
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Inhaltszusammenfassung
The helicity dependence of the differential cross-section for the gamma d -> pi NN reactions has been measured for the first time in the Delta-resonance region. The measurement was performed with the large-acceptance detector DAPHNE at the tagged photon beam facility of the MAMI accelerator in Mainz. The data show that the main reaction mechanisms for the pi(+/-) NN channels are the quasi-free N pi processes on one bound nucleon with nuclear dynamics playing a minor role. On the contrary, for...The helicity dependence of the differential cross-section for the gamma d -> pi NN reactions has been measured for the first time in the Delta-resonance region. The measurement was performed with the large-acceptance detector DAPHNE at the tagged photon beam facility of the MAMI accelerator in Mainz. The data show that the main reaction mechanisms for the pi(+/-) NN channels are the quasi-free N pi processes on one bound nucleon with nuclear dynamics playing a minor role. On the contrary, for the pi(0)np channel nuclear mechanisms involving the reabsorption of the photoproduced pi(0) by the np pair have to be taken into account to reproduce the experimental data.» weiterlesen» einklappen
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Klassifikation
DFG Fachgebiet:
Teilchen, Kerne und Felder
DDC Sachgruppe:
Physik
