https://doi.org/10.1140/epjc/s10052-023-12275-3
Regular Article - Theoretical Physics
The mass spectrum and strong decay properties of the charmed-strange mesons within Godfrey–Isgur model considering the coupled-channel effects
1
School of Physics and Microelectronics, Zhengzhou University, 450001, Zhengzhou, Henan, China
2
Guangxi Key Laboratory of Nuclear Physics and Nuclear Technology, Guangxi Normal University, 541004, Guilin, China
3
School of Physics, Nankai University, 300071, Tianjin, China
Received:
5
May
2023
Accepted:
21
November
2023
Published online:
3
December
2023
Motivated by the recently observed state by LHCb, we investigate the mass spectrum and the strong decay properties of the charmed-strange mesons within the Godfrey–Isgur model considering the coupled-channel effects. One finds that the
contributions to the mass shifts are large for all the charmed-strange states, which is maybe due to the spin-enhancement effect. Our results support that
and
could be interpreted as the
and
states with larger DK and
components, respectively, although the probabilities of the DK and
components for
and
are smaller than other theoretical predictions, which may be due to our neglect of the direct interaction of the meson components. Meanwhile,
,
,
,
,
, and
could be well interpreted as the
,
,
,
,
, and
states, respectively. Although the
mass is about 50 MeV less than our prediction for the
state, its width is still in good agreement with the one of
. Therefore,
state needs to be further confirmed by the experimental measurements, and the more precise information about
will shed light on its assignment of
. Furthermore, we predict the masses and the strong decay properties of the charmed-strange mesons with masses around 3 GeV, which would be helpful to experimentally search for these states.
© The Author(s) 2023
Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
Funded by SCOAP3. SCOAP3 supports the goals of the International Year of Basic Sciences for Sustainable Development.