First measurement of the circular beam asymmetry in the (gamma)over-right-arrowp → pi(0)eta p reaction
Physics letters : B. Bd. 693. H. 5. Amsterdam: North-Holland Publ. 2010 S. 551 - 554
Erscheinungsjahr: 2010
ISBN/ISSN: 0370-2693
Publikationstyp: Zeitschriftenaufsatz
Sprache: Englisch
Doi/URN: 10.1016/j.physletb.2010.09.028
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Inhaltszusammenfassung
The circular photon asymmetry for pi(0)eta photoproduction on the proton was measured for the first time at the tagged photon facility of the MAMI C accelerator using the Crystal Ball/TAPS photon spectrometer. The experimental results are interpreted within a phenomenological isobar model that confirms the dominant role of the Delta(1700)D-33 resonance. The measured asymmetry allows us to identify small contributions from positive-parity resonances via interference terms with the dominant D-3...The circular photon asymmetry for pi(0)eta photoproduction on the proton was measured for the first time at the tagged photon facility of the MAMI C accelerator using the Crystal Ball/TAPS photon spectrometer. The experimental results are interpreted within a phenomenological isobar model that confirms the dominant role of the Delta(1700)D-33 resonance. The measured asymmetry allows us to identify small contributions from positive-parity resonances via interference terms with the dominant D-33 amplitude. (C) 2010 Elsevier B.V. All rights reserved.» weiterlesen» einklappen
Autoren
Klassifikation
DFG Fachgebiet:
Teilchen, Kerne und Felder
DDC Sachgruppe:
Physik
