Meson form factors and nonperturbative gluon propagators

Detalhes bibliográficos
Autor(a) principal: Gay Ducati, Maria Beatriz
Data de Publicação: 2003
Outros Autores: Sauter, Werner Krambeck
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRGS
Texto Completo: http://hdl.handle.net/10183/104014
Resumo: The 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.
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spelling Gay Ducati, Maria BeatrizSauter, Werner Krambeck2014-10-01T02:10:44Z20030556-2821http://hdl.handle.net/10183/104014000346474The 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.application/pdfengPhysical review. D, Particles and fields. Vol. 67, no. 1 (Jan. 2003), 014014 8p.GluonsKaonsPionsCromodinâmica quânticaMeson form factors and nonperturbative gluon propagatorsEstrangeiroinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSORIGINAL000346474.pdf000346474.pdfTexto completo (inglês)application/pdf129609http://www.lume.ufrgs.br/bitstream/10183/104014/1/000346474.pdfc1445ae294b1b9aad897540289b6d8a1MD51TEXT000346474.pdf.txt000346474.pdf.txtExtracted Texttext/plain27772http://www.lume.ufrgs.br/bitstream/10183/104014/2/000346474.pdf.txt22ecce4b9bc2fa9e89deaa3b526ae83aMD52THUMBNAIL000346474.pdf.jpg000346474.pdf.jpgGenerated Thumbnailimage/jpeg1979http://www.lume.ufrgs.br/bitstream/10183/104014/3/000346474.pdf.jpg4ec6264223c1fd440438d41b0edce880MD5310183/1040142018-10-08 08:44:16.421oai:www.lume.ufrgs.br:10183/104014Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2018-10-08T11:44:16Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv Meson form factors and nonperturbative gluon propagators
title Meson form factors and nonperturbative gluon propagators
spellingShingle Meson form factors and nonperturbative gluon propagators
Gay Ducati, Maria Beatriz
Gluons
Kaons
Pions
Cromodinâmica quântica
title_short Meson form factors and nonperturbative gluon propagators
title_full Meson form factors and nonperturbative gluon propagators
title_fullStr Meson form factors and nonperturbative gluon propagators
title_full_unstemmed Meson form factors and nonperturbative gluon propagators
title_sort Meson form factors and nonperturbative gluon propagators
author Gay Ducati, Maria Beatriz
author_facet Gay Ducati, Maria Beatriz
Sauter, Werner Krambeck
author_role author
author2 Sauter, Werner Krambeck
author2_role author
dc.contributor.author.fl_str_mv Gay Ducati, Maria Beatriz
Sauter, Werner Krambeck
dc.subject.por.fl_str_mv Gluons
Kaons
Pions
Cromodinâmica quântica
topic Gluons
Kaons
Pions
Cromodinâmica quântica
description The 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.
publishDate 2003
dc.date.issued.fl_str_mv 2003
dc.date.accessioned.fl_str_mv 2014-10-01T02:10:44Z
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dc.language.iso.fl_str_mv eng
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dc.relation.ispartof.pt_BR.fl_str_mv Physical review. D, Particles and fields. Vol. 67, no. 1 (Jan. 2003), 014014 8p.
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