Continuum bound states K L, D 1(2420), D s1(2536), and their partners K S, D 1(2400), D * sJ(2463)
Autor(a) principal: | |
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Data de Publicação: | 2004 |
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/10316/7698 https://doi.org/10.1140/epjc/s2003-01465-0 |
Resumo: | The very recently observed D * sJ(2463) meson is described as a $J^{P}\! = \!1^{ + }$ $c\bar{s}$ bound state in a unitarised meson model, owing its existence to the strong OZI-allowed $^{3}\!P_{0}$ coupling to the nearby S-wave $D^{*}\!K$ threshold. By the same non-perturbative mechanism, the narrow axial-vector D s1(2536) resonance shows up as a quasi-bound-state partner embedded in the $D^{*}\!K$ continuum. With the same model and parameters, it is also shown that the preliminary broad 1 + D 1(2400) resonance and the established narrow 1 + D 1(2420) may be similar $c\bar{n}$ partners, as a result of the strong OZI-allowed $^{3}\!P_{0}$ coupling to the nearby S-wave $D^{*}\!\pi$ threshold. The continuum bound states D 1(2420) and D s1(2536) are found to be mixtures of 33% $^{3\!}P_{1}$ and 67% $^{1\!}P_{1}$, whereas their partners D 1(2400) and D * sJ(2463) have more or less the opposite $^{2S + 1}\!P_1$-state content, but additionally with some $D^{*}\!\pi$ or $D^{*}\!K$ admixture, respectively. The employed mechanism also reproduces the ratio of the K L- K S mass difference and the K S width, by describing K L as a bound state embedded in the $\pi\pi$ continuum. The model’s results for $J^{P}\! = \!1^{ + }$ states containing one b quark are also discussed. |
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7160 |
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Continuum bound states K L, D 1(2420), D s1(2536), and their partners K S, D 1(2400), D * sJ(2463)The very recently observed D * sJ(2463) meson is described as a $J^{P}\! = \!1^{ + }$ $c\bar{s}$ bound state in a unitarised meson model, owing its existence to the strong OZI-allowed $^{3}\!P_{0}$ coupling to the nearby S-wave $D^{*}\!K$ threshold. By the same non-perturbative mechanism, the narrow axial-vector D s1(2536) resonance shows up as a quasi-bound-state partner embedded in the $D^{*}\!K$ continuum. With the same model and parameters, it is also shown that the preliminary broad 1 + D 1(2400) resonance and the established narrow 1 + D 1(2420) may be similar $c\bar{n}$ partners, as a result of the strong OZI-allowed $^{3}\!P_{0}$ coupling to the nearby S-wave $D^{*}\!\pi$ threshold. The continuum bound states D 1(2420) and D s1(2536) are found to be mixtures of 33% $^{3\!}P_{1}$ and 67% $^{1\!}P_{1}$, whereas their partners D 1(2400) and D * sJ(2463) have more or less the opposite $^{2S + 1}\!P_1$-state content, but additionally with some $D^{*}\!\pi$ or $D^{*}\!K$ admixture, respectively. The employed mechanism also reproduces the ratio of the K L- K S mass difference and the K S width, by describing K L as a bound state embedded in the $\pi\pi$ continuum. The model’s results for $J^{P}\! = \!1^{ + }$ states containing one b quark are also discussed.2004info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10316/7698http://hdl.handle.net/10316/7698https://doi.org/10.1140/epjc/s2003-01465-0engThe European Physical Journal C - Particles and Fields. 32:4 (2004) 493-499Beveren, E.vanRupp, G.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:RCAAP2020-05-25T12:48:15Zoai:estudogeral.uc.pt:10316/7698Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:59:42.061599Repositório 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 |
Continuum bound states K L, D 1(2420), D s1(2536), and their partners K S, D 1(2400), D * sJ(2463) |
title |
Continuum bound states K L, D 1(2420), D s1(2536), and their partners K S, D 1(2400), D * sJ(2463) |
spellingShingle |
Continuum bound states K L, D 1(2420), D s1(2536), and their partners K S, D 1(2400), D * sJ(2463) Beveren, E.van |
title_short |
Continuum bound states K L, D 1(2420), D s1(2536), and their partners K S, D 1(2400), D * sJ(2463) |
title_full |
Continuum bound states K L, D 1(2420), D s1(2536), and their partners K S, D 1(2400), D * sJ(2463) |
title_fullStr |
Continuum bound states K L, D 1(2420), D s1(2536), and their partners K S, D 1(2400), D * sJ(2463) |
title_full_unstemmed |
Continuum bound states K L, D 1(2420), D s1(2536), and their partners K S, D 1(2400), D * sJ(2463) |
title_sort |
Continuum bound states K L, D 1(2420), D s1(2536), and their partners K S, D 1(2400), D * sJ(2463) |
author |
Beveren, E.van |
author_facet |
Beveren, E.van Rupp, G. |
author_role |
author |
author2 |
Rupp, G. |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Beveren, E.van Rupp, G. |
description |
The very recently observed D * sJ(2463) meson is described as a $J^{P}\! = \!1^{ + }$ $c\bar{s}$ bound state in a unitarised meson model, owing its existence to the strong OZI-allowed $^{3}\!P_{0}$ coupling to the nearby S-wave $D^{*}\!K$ threshold. By the same non-perturbative mechanism, the narrow axial-vector D s1(2536) resonance shows up as a quasi-bound-state partner embedded in the $D^{*}\!K$ continuum. With the same model and parameters, it is also shown that the preliminary broad 1 + D 1(2400) resonance and the established narrow 1 + D 1(2420) may be similar $c\bar{n}$ partners, as a result of the strong OZI-allowed $^{3}\!P_{0}$ coupling to the nearby S-wave $D^{*}\!\pi$ threshold. The continuum bound states D 1(2420) and D s1(2536) are found to be mixtures of 33% $^{3\!}P_{1}$ and 67% $^{1\!}P_{1}$, whereas their partners D 1(2400) and D * sJ(2463) have more or less the opposite $^{2S + 1}\!P_1$-state content, but additionally with some $D^{*}\!\pi$ or $D^{*}\!K$ admixture, respectively. The employed mechanism also reproduces the ratio of the K L- K S mass difference and the K S width, by describing K L as a bound state embedded in the $\pi\pi$ continuum. The model’s results for $J^{P}\! = \!1^{ + }$ states containing one b quark are also discussed. |
publishDate |
2004 |
dc.date.none.fl_str_mv |
2004 |
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/10316/7698 http://hdl.handle.net/10316/7698 https://doi.org/10.1140/epjc/s2003-01465-0 |
url |
http://hdl.handle.net/10316/7698 https://doi.org/10.1140/epjc/s2003-01465-0 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
The European Physical Journal C - Particles and Fields. 32:4 (2004) 493-499 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
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 |
repository.mail.fl_str_mv |
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1799133888281313280 |