<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>N</mml:mi></mml:mrow><mml:mrow><mml:mn>33</mml:mn></mml:mrow><mml:mrow /><mml:mrow /><mml:mrow><mml:mo>*</mml:mo></mml:mrow></mml:mmultiscripts></mml:mrow><mml:mn /><mml:mo>(</mml:mo><mml:mn>1238</mml:mn><mml:mo>)</mml:mo><mml:mn /></mml:math>and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi>ρ</mml:mi></mml:mrow><mml:mrow><

Crouch, H. R.; Hargraves, R.; Kendall, B.; Lanou, R.E.; Shapiro, A.; Widgoff, M.; Fischer, G.; Brenner, A. E.; Law, M. E.; Ronat, E.; Strauch, K.; Street, J. C.; Szymański, J.; Teal, J. D.; Bastien, Pierre; Eisenberg, Y.; Feld, Bernard T.; Fischer, V. K.; Pless, I. A.; Rogers, A. H.; Rogers, C.; Rosenson, L.; Watts, T.; Yamamoto, R. K.; Guerriero, L.; Salandin, G. A.

doi:10.1103/physrevlett.13.640

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Cited by 30 publications

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“…These reactions have been extensively studied experimentally in the past ( [1,2,3,4,5,6,7]). New improvements in experimental techniques and facilities have reopened the study of these reactions at Mainz, with two experiments on the proton [8,9].…”

Section: Introductionmentioning

confidence: 99%

Double pion photoproduction on the nucleon: study of the isospin channels

1996

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A model for the γp → π + π − p reaction developed earlier is extended to account for all isospin channels. The model includes N , ∆(1232), N * (1440) and N * (1520) as intermediate baryonic states and the ρ-meson as an intermediate 2π resonance. Although many terms contribute to the cross section, some channels exhibit particular sensitivity to certain mechanisms of resonance excitation or decay and the reactions provide novel information on such mechanisms. In particular the γN → N * (1520) → ∆π process affects all the channels and is a key ingredient in the interpretation of the data. Comparison is made with all available data and the agreement is good in some channels. The remaining discrepancies in some other channels are discussed.

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