Measurement of the G asymmetry for the γp → Nπ channels in the Δ(1232) resonance region

J. Ahrens, S. Altieri, J. R.M. Annand, H. J. Arends, R. Beck, A. Braghieri, N. D'Hose, H. Dutz, S. Goertz, P. Grabmayr, S. Hasegawa, E. Heid, H. Holvoet, L. Van Hoorebeke, N. Horikawa, T. Iwata, O. Jahn, P. Jennewein, R. Kondratiev, J. KrimmerM. Lang, B. Lannoy, K. Livingston, J. C. McGeorge, W. Meyer, A. Panzeri, P. Pedroni, T. Pinelli, I. Preobrajenski, G. Reicherz, G. Rosner, M. Rost, T. Rostomyan, D. Ryckbosch, M. Schumacher, B. Seitz, G. Tamas, A. Thomas, R. Van De Vyver, Th Walcher, F. Zapadtka

Research output: Contribution to journalArticlepeer-review

23 Citations (Scopus)


The G asymmetry of the γp → Nπ reaction has been measured for the first time for E γ = 340±14 MeV. This observable, for which very scarce published data exist, plays an important role to disentangle the contributions of the various nucleon resonances. The experiment, performed at the Mainz microtron MAMI, used a 4π-detector system, a linearly polarized, tagged photon beam, and a longitudinally polarized proton target.

Original languageEnglish
Pages (from-to)135-140
Number of pages6
JournalEuropean Physical Journal A
Issue number1
Publication statusPublished - Oct 2005
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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