New insight into the exotic states strongly coupled with the DDâ¾∗ from the Tcc.
Sci Bull (Beijing)
; 2024 Jul 24.
Article
em En
| MEDLINE
| ID: mdl-39142944
ABSTRACT
We have investigated the internal structure of the open- and hidden-charmed (DD∗/D¯D∗) molecules in the unified framework. We first fit the experimental lineshape of the Tcc+ state and extract the DD∗ interaction, from which the Tcc+ is assumed to arise solely. Then we obtain the DDâ¾∗ interaction by charge conjugation. Our results show that the DDâ¾∗ interaction is attractive but insufficient to form X(3872) as a bound state. Instead, its formation requires the crucial involvement of the coupled channel effect between the DD¯∗ and cc¯ components, although the cc¯ accounts for approximately 1% only. Besides X(3872), we have obtained a higher-energy state around 3957.9 MeV with a width of 16.7 MeV, which may be a potential candidate for the X(3940). In JPC=1+- sector, we have found two states related to the iso-scalar XÌ(3872) and hc(2P), respectively. Our combined study provides valuable insights into the nature of these DD∗/DD¯∗ exotic states.
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01-internacional
Base de dados:
MEDLINE
Idioma:
En
Ano de publicação:
2024
Tipo de documento:
Article