https://doi.org/10.1140/epja/s10050-023-00940-w
Regular Article –Theoretical Physics
Estimation of coupling constants for D-meson, charmed, and light baryons in effective Lagrangian approach and quark model
1
School of Physics and Center of Excellence in High Energy Physics and Astrophysics, Suranaree University of Technology, 30000, Nakhon Ratchasima, Thailand
2
Department of Physics, Faculty of Science, Srinakharinwirot University, 10110, Bangkok, Thailand
3
Department of Physics, Faculty of Science, Khon Kaen University, 40002, Khon Kaen, Thailand
4
China-Thailand Joint Research Center of Physics, Harbin Engineering University, People’s Republic of China and Suranaree University of Technology, 30000, Nakhon Ratchasima, Thailand
a
tanattosan@outlook.jp
c
warintorn.s@g.sut.ac.th
f
darisa@kku.ac.th
g
yupeng@g.sut.ac.th
Received:
3
October
2022
Accepted:
1
February
2023
Published online:
11
February
2023
We estimate coupling constants for effective Lagrangians of D-meson, charmed, and light baryons from charmed baryon decay processes. First, we calculate decay widths for the processes 
, 
, 
, 
, and 
in effective Lagrangian method and quark model picture with 
model. By employing the coupling constants for 
interaction from several literatures, the strength parameter 
for quark model is fixed in the decay process . Then, the coupling constants for the effective Lagrangians of 
, 
, 
, and 
interactions are estimated in the decay channels , , , and , respectively. Then, the coupling constants for , 
, and 
interactions are calculated from heavy-quark and large-
sum rules. The coupling constants from this study will be useful for further studies of charm hadrons.
© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
