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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

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.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.source	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.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	http://dx.doi.org/10.1016/0375-9474(95)00492-0
dc.identifier.idgrec	079481
dc.rights.accessRights	open access	es_ES