Measurement of the isospin amplitude in the reaction γn → ?0(pπ?) at 7.5 GeV |
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Authors: | G Alexander O Benary S Dagan A Levy D Lissauer Y Oren |
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Institution: | Department of Physics and Astronomy, Tel Aviv University, Ramat-Aviv, Israel |
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Abstract: | The cross-channel isospin amplitude is measured in the single reaction γn → ?0(pπ?) at 7.5 GeV assuming the ?0 dominance model. A low-mass enhancement is found for in the range of m(pπ?) of ~1.2 to ~1.7 GeV. The reaction strongly violates s-channel helicity conservation but is consistent with t-channel helicity conservation. The features are found to be very similar to those obtained in previous analyses of πp → π(Nπ) reactions. |
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