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

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

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dc.contributor.author Gómez Tejedor, José Antonio
dc.contributor.author Oset Báguena, Eulogio
dc.date.accessioned 2015-09-04T11:00:34Z
dc.date.available 2015-09-04T11:00:34Z
dc.date.issued 1996
dc.identifier.citation Gómez Tejedor, José Antonio Oset Báguena, Eulogio 1996 Double pion photoproduction on the nucleon: Study of the isospin channels Nuclear Physics A 600 4 413 435
dc.identifier.uri http://hdl.handle.net/10550/46863
dc.description.abstract A model for the gamma p ----> pion+ pion- p reaction developed earlier is extended to account for all isospin channels. The model includes N, Delta(1232), N^*(1440) and N^*(1520) as intermediate baryonic states and the rho-meson as an intermediate two pion 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 gamma N ----> N^*(1520) ----> Delta(1232) pion 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.
dc.language.iso eng
dc.relation.ispartof Nuclear Physics A, 1996, vol. 600, num. 4, p. 413-435
dc.subject Física
dc.title Double pion photoproduction on the nucleon: Study of the isospin channels
dc.type journal article es_ES
dc.date.updated 2015-09-04T11:00:34Z
dc.identifier.doi 10.1016/0375-9474(95)00492-0
dc.identifier.idgrec 079481
dc.rights.accessRights open access es_ES

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