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Evaluation of the polarization observables I-S and I-C in the reaction gamma p -> pi(0)eta p

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Evaluation of the polarization observables I-S and I-C in the reaction gamma p -> pi(0)eta p

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dc.contributor.author Döring, Michael
dc.contributor.author Oset Báguena, Eulogio
dc.contributor.author Meissner, Ulf-G.
dc.date.accessioned 2015-08-20T11:14:25Z
dc.date.available 2015-08-20T11:14:25Z
dc.date.issued 2010
dc.identifier.citation Döring, Michael Oset Báguena, Eulogio Meissner, Ulf-G. 2010 Evaluation of the polarization observables I-S and I-C in the reaction gamma p -> pi(0)eta p European Physical Journal A 46 2 315 323
dc.identifier.uri http://hdl.handle.net/10550/46712
dc.description.abstract We evaluate the polarization observables I^S and I^C for the reaction gamma p --> pi^0 eta p, using a chiral unitary framework developed earlier. The I^S and I^C observables have been recently measured for the first time by the CBELSA/TAPS collaboration. The theoretical predictions of I^S and I^C, given for altogether 18 angle dependent functions, are in good agreement with the measurements. Also, the asymmetry dSigma/dcos(theta) evaluated here agrees with the data. We show the importance of the Delta(1700)D33 resonance and its S-wave decay into eta Delta(1232). The result can be considered as a further confirmation of the dynamical nature of this resonance. At the highest energies, deviations of the predictions from the data start to become noticeable, which leaves room for additional processes and resonances such as a Delta(1940)D33. We also point out how to further improve the calculation.
dc.language.iso eng
dc.relation.ispartof European Physical Journal A, 2010, vol. 46, num. 2, p. 315-323
dc.subject Física
dc.title Evaluation of the polarization observables I-S and I-C in the reaction gamma p -> pi(0)eta p
dc.type journal article es_ES
dc.date.updated 2015-08-20T11:14:25Z
dc.identifier.doi 10.1140/epja/i2010-11047-4
dc.identifier.idgrec 061752
dc.rights.accessRights open access es_ES

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