https://doi.org/10.1140/epjc/s10052-021-09205-6
Regular Article - Theoretical Physics
A mixing coupling scheme for spectra of singly heavy baryons with spin-1 diquarks in P-waves
1
Institute of Theoretical Physics, College of Physics and Electronic Engineering, Northwest Normal University, 730070, Lanzhou, China
2
College of Physics and Electronic Information Engineering, Qinghai Normal University, 810000, Xining, China
3
Joint Research Center for Physics, Lanzhou University and Qinghai Normal University, 810000, Xining, China
4
Lanzhou Center for Theoretical Physics, Lanzhou University, 730000, Lanzhou, China
Received:
16
March
2021
Accepted:
2
May
2021
Published online:
20
May
2021
A new scheme of state classification is proposed and applied to analyze masses of the heavy baryons 
, 
and 
in P-waves. The results confirm all excited 
and 
baryons reported recently by LHCb to be bound states of a P-wave ss-diquark and a respective charm or bottom quark, and thereby predict Regge trajectories for more excited and baryons. We suggest one excited 
state to be unseen by LHCb around 6352 MeV, and predict P-wave masses of all spin-partners of the odd-parity baryons 
and 
/
. A computation is further given in a relativized potential quark models to explain matched values of spin couplings of all considered baryons, by which a scaling law for these spin couplings is discussed.
© The Author(s) 2021
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