Angular asymmetries in the reactions pp \to dπ^+ηand pn \to dπ^0ηand a_0-f_0 mixing

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dc.creatorKudryavtsev, A. E.
dc.creatorTarasov, V. E.
dc.creatorHaidenbauer, J.
dc.creatorHanhart, C.
dc.creatorSpeth, J.
dc.date2003-04-16
dc.date.accessioned2026-07-07T11:48:20Z
dc.date.available2026-07-07T11:48:20Z
dc.descriptionThe reactions pp\to dπ^+ηand pn\to dπ^0ηare of special interest for investigating the a_0(980) (J^P=0^+) resonance in the process NN \to da_0 \to dπη. We study some aspects of those reactions within a general formalism and also in a concrete phenomenological model. In particular, it is shown that the presence of nonresonant (i.e. without excitation of the a_0 resonance) contributions to these reactions yields nonvanishing values for specific polarization observables, i.e. to effects like those generated by a_0-f_0 mixing. An experimental determination of these observables for the reaction pp\to dπ^+ηwould provide concrete information on the magnitude of those nonresonant contributions to πηproduction. We discuss also the possibility of extracting information about a_0-f_0 mixing from the reaction pn \to dπ^0ηwith polarized proton beam.
dc.description14 pages, 3 figures
dc.identifierhttps://arxiv.org/abs/nucl-th/0304052
dc.identifierhttp://arxiv.org/abs/nucl-th/0304052
dc.identifierPhys.Atom.Nucl.66:1946-1952,2003; Yad.Fiz.66:1994-2000,2003
dc.identifierdoi:10.1134/1.1619506
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/202888
dc.subjectNuclear Theory
dc.titleAngular asymmetries in the reactions pp \to dπ^+ηand pn \to dπ^0ηand a_0-f_0 mixing
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