Helicity amplitudes A1/2 and A3/2 for the D13(1520) resonance obtained from the γp → pπ0 reaction

J. Ahrens, S. Altieri, J. R.M. Annand, G. Anton, H. J. Arends, K. Aulenbacher, R. Beck, C. Bradtke, A. Braghieri, N. Degrande, N. D'Hose, D. Drechsel, H. Dutz, S. Goertz, P. Grabmayr, K. Hansen, J. Harmsen, D. Von Harrach, S. Hasegawa, T. HasegawaE. Heid, K. Helbing, H. Holvoet, L. Van Hoorebeke, N. Horikawa, T. Iwata, O. Jahn, P. Jennewein, T. Kageya, S. Kamalov, B. Kiel, F. Klein, R. Kondratiev, K. Kossert, J. Krimmer, M. Lang, B. Lannoy, R. Leukel, V. Lisin, T. Matsuda, J. C. McGeorge, A. Meier, D. Menze, W. Meyer, T. Michel, J. Naumann, A. Panzeri, P. Pedroni, T. Pinelli, I. Preobrajenski, E. Radtke, E. Reichert, G. Reicherz, Ch Rohlof, G. Rosner, D. Ryckbosch, M. Sauer, B. Schoch, M. Schumacher, B. Seitz, T. Speckner, N. Takabayashi, G. Tamas, A. Thomas, L. Tiator, R. Van Vyver, A. Wakai, W. Weihofen, F. Wissmann, F. Zapadtka, G. Zeitler

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Abstract

The helicity dependence of the γp → pπ0 reaction in the photon energy range from 550 to 790 MeV was discussed. The experiment included a 4π- detector system, a circularly polarized tagged photon beam and a longitudinally polarized frozen spin target. The analysis showed that the obtained data were predominantly sensitive to the D13(1520) resonance and were used to determine its helicity amplitudes.

Original languageEnglish
Article number232002
Pages (from-to)2320021-2320025
Number of pages5
JournalPhysical Review Letters
Volume88
Issue number23
Publication statusPublished - Jun 10 2002
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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