https://doi.org/10.1140/epjc/s10052-021-09736-y
Regular Article - Theoretical Physics
Mass spectroscopy and strong decays of excited open charm 
mesons using relativistic Dirac formalism
1
Department of Physics, Sardar Patel University, Vallabh Vidyanagar, 388120, Gujarat, India
2
P. D. Patel Institute of Applied Sciences, Charusat, Changa, India
Received:
28
June
2021
Accepted:
11
October
2021
Published online:
22
October
2021
The mass spectra for the heavy-light 
or d charmed mesons are computed based on a relativistic framework. The low-lying 1P states are found to be in an excellent agreement with the PDG reported values. Using the computed mass spectra and following effective Lagrangian approach based on heavy quark and chiral symmetry, the OZI allowed two body strong decays are computed. The computed decay rates, ratios and branching fractions allow us to identify the proper spin-parity assignments of the newly observed charm states. Accordingly, we could identify 
as 
, 
as 
, 
as 
, 
as 
, 
as 
, 
as 
and 
as 
open charm states. The effective coupling constants, 
, 
, 
, 
and 
extracted from the present study are found to be in accordance with the reported values. These coupling constants would be useful in further investigations. We found 
as a favorable channel for the experimental search of the missing 
state.
© The Author(s) 2021
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