https://doi.org/10.1140/epjc/s10052-017-4708-x
Regular Article - Theoretical Physics
Low-lying charmed and charmed-strange baryon states
1
Department of Physics, Anyang Normal University, Anyang, 455000, China
2
School of Physical Science and Technology, Lanzhou University, Lanzhou, 730000, China
3
Research Center for Hadron and CSR Physics, Institute of Modern Physics of CAS & Lanzhou University, Lanzhou, 730000, China
4
Tokyo Kasei University, 1-18-1 Kaga, Itabashi, Tokyo, 173-8602, Japan
5
Theoretical Research Division, Nishina Center, RIKEN, Saitama, 351-0198, Japan
* e-mail: chenbing@shu.edu.cn
Received:
15
December
2016
Accepted:
19
February
2017
Published online:
10
March
2017
In this work, we systematically study the mass spectra and strong decays of 1P and 2S charmed and charmed-strange baryons in the framework of non-relativistic constituent quark models. With the light quark cluster–heavy quark picture, the masses are simply calculated by a potential model. The strong decays are studied by the Eichten–Hill–Quigg decay formula. Masses and decay properties of the well-established 1S and 1P states can be reproduced by our method. 
can be assigned as a 
or 
state. We prefer to interpret the signal 
as a 
state although at present we cannot thoroughly exclude the possibility that this is the same state as 
. 
or 
could be explained as the 
state or 
state, respectively. We propose to measure the branching ratio of 
in the future, which may disentangle the puzzle of this state. Our results support 
as the first radial excited state of 
with 
. The assignment of 
is analogous to , i.e., a 
or 
state. In addition, we predict some typical ratios among partial decay widths, which are valuable for experimental search for these missing charmed and charmed-strange baryons.
© The Author(s), 2017
