Tetraquarks in the 1/N expansion and meson-meson resonances

Diquarks are found to have the right degrees of freedom to describe the tetraquark poles in hidden-charm to open-charm meson-meson amplitudes. Compact tetraquarks result as intermediate states in non-planar diagrams of the 1/N expansion and the corresponding resonances are narrower than what estimat...

Descripción completa

Detalles Bibliográficos
Autores principales: Maiani, L., Polosa, A.D., Riquer, V.
Lenguaje:eng
Publicado: 2016
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1007/JHEP06(2016)160
http://cds.cern.ch/record/2153508
_version_ 1780950602951426048
author Maiani, L.
Polosa, A.D.
Riquer, V.
author_facet Maiani, L.
Polosa, A.D.
Riquer, V.
author_sort Maiani, L.
collection CERN
description Diquarks are found to have the right degrees of freedom to describe the tetraquark poles in hidden-charm to open-charm meson-meson amplitudes. Compact tetraquarks result as intermediate states in non-planar diagrams of the 1/N expansion and the corresponding resonances are narrower than what estimated before. The proximity of tetraquarks to meson-thresholds has an apparent role in this analysis and, in the language of meson molecules, an halving rule in the counting of states is obtained.
id cern-2153508
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2016
record_format invenio
spelling cern-21535082022-08-10T12:43:37Zdoi:10.1007/JHEP06(2016)160http://cds.cern.ch/record/2153508engMaiani, L.Polosa, A.D.Riquer, V.Tetraquarks in the 1/N expansion and meson-meson resonancesParticle Physics - PhenomenologyDiquarks are found to have the right degrees of freedom to describe the tetraquark poles in hidden-charm to open-charm meson-meson amplitudes. Compact tetraquarks result as intermediate states in non-planar diagrams of the 1/N expansion and the corresponding resonances are narrower than what estimated before. The proximity of tetraquarks to meson-thresholds has an apparent role in this analysis and, in the language of meson molecules, an halving rule in the counting of states is obtained.Diquarks are found to have the right degrees of freedom to describe the tetraquark poles in hidden-charm to open-charm meson-meson amplitudes. Compact tetraquarks result as intermediate states in non-planar diagrams of the 1/N expansion and the corresponding resonances are narrower than what estimated before. The proximity of tetraquarks to meson-thresholds has an apparent role in this analysis and, in the language of meson molecules, an halving rule in the counting of states is obtained.arXiv:1605.04839oai:cds.cern.ch:21535082016-05-16
spellingShingle Particle Physics - Phenomenology
Maiani, L.
Polosa, A.D.
Riquer, V.
Tetraquarks in the 1/N expansion and meson-meson resonances
title Tetraquarks in the 1/N expansion and meson-meson resonances
title_full Tetraquarks in the 1/N expansion and meson-meson resonances
title_fullStr Tetraquarks in the 1/N expansion and meson-meson resonances
title_full_unstemmed Tetraquarks in the 1/N expansion and meson-meson resonances
title_short Tetraquarks in the 1/N expansion and meson-meson resonances
title_sort tetraquarks in the 1/n expansion and meson-meson resonances
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1007/JHEP06(2016)160
http://cds.cern.ch/record/2153508
work_keys_str_mv AT maianil tetraquarksinthe1nexpansionandmesonmesonresonances
AT polosaad tetraquarksinthe1nexpansionandmesonmesonresonances
AT riquerv tetraquarksinthe1nexpansionandmesonmesonresonances

Ejemplares similares