Mixed charmonium-molecule interpretation for the y (3940) state

Detalhes bibliográficos
Autor(a) principal: Albuquerque, R. M. [UNESP]
Data de Publicação: 2015
Outros Autores: Dias, J. M., Nielsen, M., Zanetti, C. M.
Tipo de documento: Artigo de conferência
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1088/1742-6596/630/1/012044
http://hdl.handle.net/11449/171979
Resumo: QCD sum rules are used to study the mass and the decay widths of the Y(3940) state. We assume that it can be described by a mixed charmonium-molecule scalar current with JPC = 0++. Using a mixing angle θ = (76.0±5.0)°, we obtain MY = (3.95±0.11) GeV, which is in good agreement with the experimental mass of the Y(3940) state. We also evaluate the decay width in the channels Y → J/ψω and Y → γγ obtaining the values ΓY → j/ψω ≈ (1.7± 0.6) MeV and ΓY→γγ ≈ (1.6 ± 1.3) KeV, respectively. We also study the decay process of this state into channels containing DD mesons in the final state.
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spelling Mixed charmonium-molecule interpretation for the y (3940) stateQCD sum rules are used to study the mass and the decay widths of the Y(3940) state. We assume that it can be described by a mixed charmonium-molecule scalar current with JPC = 0++. Using a mixing angle θ = (76.0±5.0)°, we obtain MY = (3.95±0.11) GeV, which is in good agreement with the experimental mass of the Y(3940) state. We also evaluate the decay width in the channels Y → J/ψω and Y → γγ obtaining the values ΓY → j/ψω ≈ (1.7± 0.6) MeV and ΓY→γγ ≈ (1.6 ± 1.3) KeV, respectively. We also study the decay process of this state into channels containing DD mesons in the final state.Institute for Theoretical Physics São Paulo State University (IFT-UNESP), R. Dr. Bento Teobaldo Ferraz 271 - Bl. II Sala 207Instituto de Física Universidade de São Paulo, Caixa Postal 66318Faculdade de Tecnologia Universidade Do Estado Do Rio de Janeiro, Rod. Presidente Dutra Km 298, Pólo IndustrialInstitute for Theoretical Physics São Paulo State University (IFT-UNESP), R. Dr. Bento Teobaldo Ferraz 271 - Bl. II Sala 207Universidade Estadual Paulista (Unesp)Universidade de São Paulo (USP)Universidade do Estado do Rio de Janeiro (UERJ)Albuquerque, R. M. [UNESP]Dias, J. M.Nielsen, M.Zanetti, C. M.2018-12-11T16:58:00Z2018-12-11T16:58:00Z2015-07-15info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjectapplication/pdfhttp://dx.doi.org/10.1088/1742-6596/630/1/012044Journal of Physics: Conference Series, v. 630, n. 1, 2015.1742-65961742-6588http://hdl.handle.net/11449/17197910.1088/1742-6596/630/1/0120442-s2.0-849386350822-s2.0-84938635082.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of Physics: Conference Series0,2410,241info:eu-repo/semantics/openAccess2023-11-23T06:14:34Zoai:repositorio.unesp.br:11449/171979Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T18:31:46.424612Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Mixed charmonium-molecule interpretation for the y (3940) state
title Mixed charmonium-molecule interpretation for the y (3940) state
spellingShingle Mixed charmonium-molecule interpretation for the y (3940) state
Albuquerque, R. M. [UNESP]
title_short Mixed charmonium-molecule interpretation for the y (3940) state
title_full Mixed charmonium-molecule interpretation for the y (3940) state
title_fullStr Mixed charmonium-molecule interpretation for the y (3940) state
title_full_unstemmed Mixed charmonium-molecule interpretation for the y (3940) state
title_sort Mixed charmonium-molecule interpretation for the y (3940) state
author Albuquerque, R. M. [UNESP]
author_facet Albuquerque, R. M. [UNESP]
Dias, J. M.
Nielsen, M.
Zanetti, C. M.
author_role author
author2 Dias, J. M.
Nielsen, M.
Zanetti, C. M.
author2_role author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
Universidade de São Paulo (USP)
Universidade do Estado do Rio de Janeiro (UERJ)
dc.contributor.author.fl_str_mv Albuquerque, R. M. [UNESP]
Dias, J. M.
Nielsen, M.
Zanetti, C. M.
description QCD sum rules are used to study the mass and the decay widths of the Y(3940) state. We assume that it can be described by a mixed charmonium-molecule scalar current with JPC = 0++. Using a mixing angle θ = (76.0±5.0)°, we obtain MY = (3.95±0.11) GeV, which is in good agreement with the experimental mass of the Y(3940) state. We also evaluate the decay width in the channels Y → J/ψω and Y → γγ obtaining the values ΓY → j/ψω ≈ (1.7± 0.6) MeV and ΓY→γγ ≈ (1.6 ± 1.3) KeV, respectively. We also study the decay process of this state into channels containing DD mesons in the final state.
publishDate 2015
dc.date.none.fl_str_mv 2015-07-15
2018-12-11T16:58:00Z
2018-12-11T16:58:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/conferenceObject
format conferenceObject
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.1088/1742-6596/630/1/012044
Journal of Physics: Conference Series, v. 630, n. 1, 2015.
1742-6596
1742-6588
http://hdl.handle.net/11449/171979
10.1088/1742-6596/630/1/012044
2-s2.0-84938635082
2-s2.0-84938635082.pdf
url http://dx.doi.org/10.1088/1742-6596/630/1/012044
http://hdl.handle.net/11449/171979
identifier_str_mv Journal of Physics: Conference Series, v. 630, n. 1, 2015.
1742-6596
1742-6588
10.1088/1742-6596/630/1/012044
2-s2.0-84938635082
2-s2.0-84938635082.pdf
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Journal of Physics: Conference Series
0,241
0,241
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
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