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dc.contributor.authorGay Ducati, Maria Beatrizpt_BR
dc.contributor.authorSauter, Werner Krambeckpt_BR
dc.date.accessioned2014-10-01T02:10:44Zpt_BR
dc.date.issued2003pt_BR
dc.identifier.issn0556-2821pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/104014pt_BR
dc.description.abstractThe meson (pion and kaon) form factor is calculated in the perturbative framework with alternative forms for the running coupling constant and the gluon propagator in the infrared kinematic region. These modified forms are employed to test the sensibility of the meson form factor to the nonperturbative contributions. It is a powerful discriminating quantity and the results obtained with a particular choice of modified running coupling constant and gluon propagator have good agreement with the available data for both mesons, indicating the robustness of the method of calculation. Nevertheless, the nonperturbative aspects may be included in the perturbative framework of the calculation of exclusive processes.en
dc.format.mimetypeapplication/pdf
dc.language.isoengpt_BR
dc.relation.ispartofPhysical review. D, Particles and fields. Vol. 67, no. 1 (Jan. 2003), 014014 8p.pt_BR
dc.rightsOpen Accessen
dc.subjectGluonspt_BR
dc.subjectKaonspt_BR
dc.subjectPionspt_BR
dc.subjectCromodinâmica quânticapt_BR
dc.titleMeson form factors and nonperturbative gluon propagatorspt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb000346474pt_BR
dc.type.originEstrangeiropt_BR


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