N* electroproduction amplitudes in a model with dynamical confinement
Autor(a) principal: | |
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Data de Publicação: | 2001 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10316/4504 https://doi.org/10.1016/S0370-2693(01)01348-X |
Resumo: | The Roper resonance is described in a chiral version of the chromodielectric model as a cluster of three quarks in radial-orbital configuration (1s)2(2s)1, surrounded by [pi]- and [sigma]-meson clouds and by a chromodielectric field which assures quark dynamical confinement. Radial profiles for all fields are determined self-consistently for each baryon. Transverse A1/2 and scalar S1/2 helicity amplitudes for the nucleon-Roper transition are calculated. The contribution of glueball and [sigma]-meson vibrations is estimated; although small for N(1440), the [sigma] contribution can be large for N(1710). |
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N* electroproduction amplitudes in a model with dynamical confinementThe Roper resonance is described in a chiral version of the chromodielectric model as a cluster of three quarks in radial-orbital configuration (1s)2(2s)1, surrounded by [pi]- and [sigma]-meson clouds and by a chromodielectric field which assures quark dynamical confinement. Radial profiles for all fields are determined self-consistently for each baryon. Transverse A1/2 and scalar S1/2 helicity amplitudes for the nucleon-Roper transition are calculated. The contribution of glueball and [sigma]-meson vibrations is estimated; although small for N(1440), the [sigma] contribution can be large for N(1710).http://www.sciencedirect.com/science/article/B6TVN-44J3PGM-8/1/a1b62749ed3855d939d2dbe93ac20af12001info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleaplication/PDFhttp://hdl.handle.net/10316/4504http://hdl.handle.net/10316/4504https://doi.org/10.1016/S0370-2693(01)01348-XengPhysics Letters B. 523:3-4 (2001) 273-279Alberto, P.Fiolhais, M.Golli, B.Marques, J.info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2020-11-06T16:59:49Zoai:estudogeral.uc.pt:10316/4504Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:59:38.375545Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
N* electroproduction amplitudes in a model with dynamical confinement |
title |
N* electroproduction amplitudes in a model with dynamical confinement |
spellingShingle |
N* electroproduction amplitudes in a model with dynamical confinement Alberto, P. |
title_short |
N* electroproduction amplitudes in a model with dynamical confinement |
title_full |
N* electroproduction amplitudes in a model with dynamical confinement |
title_fullStr |
N* electroproduction amplitudes in a model with dynamical confinement |
title_full_unstemmed |
N* electroproduction amplitudes in a model with dynamical confinement |
title_sort |
N* electroproduction amplitudes in a model with dynamical confinement |
author |
Alberto, P. |
author_facet |
Alberto, P. Fiolhais, M. Golli, B. Marques, J. |
author_role |
author |
author2 |
Fiolhais, M. Golli, B. Marques, J. |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Alberto, P. Fiolhais, M. Golli, B. Marques, J. |
description |
The Roper resonance is described in a chiral version of the chromodielectric model as a cluster of three quarks in radial-orbital configuration (1s)2(2s)1, surrounded by [pi]- and [sigma]-meson clouds and by a chromodielectric field which assures quark dynamical confinement. Radial profiles for all fields are determined self-consistently for each baryon. Transverse A1/2 and scalar S1/2 helicity amplitudes for the nucleon-Roper transition are calculated. The contribution of glueball and [sigma]-meson vibrations is estimated; although small for N(1440), the [sigma] contribution can be large for N(1710). |
publishDate |
2001 |
dc.date.none.fl_str_mv |
2001 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10316/4504 http://hdl.handle.net/10316/4504 https://doi.org/10.1016/S0370-2693(01)01348-X |
url |
http://hdl.handle.net/10316/4504 https://doi.org/10.1016/S0370-2693(01)01348-X |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Physics Letters B. 523:3-4 (2001) 273-279 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
aplication/PDF |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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1799133887831474176 |