Spectrum of heavy baryons in the quark model
By T. Yoshida, E. Hiyama, A. Hosaka, M. Oka, Katsunori Sadato. 2015
200 citations recorded by the source corpus.
Single- and double- heavy baryons are studied in the constituent quark model. The model Hamiltonian is chosen as a standard one with two exceptions : (1) The color-Coulomb term depend on quark masses, and (2) an antisymmetric $LS$ force is introduced. Model parameters are fixed by the strange baryon spectra, $\Lambda$ and $\Sigma$ baryons. The masses of the observed charmed and bottomed baryons are, then, fairly well reproduced. Our focus is on the low-lying negative-parity states, in which the heavy baryons show specific excitation modes reflecting the mass differences of heavy and light quarks. By changing quark masses from the SU(3) limit to the strange quark mass, further to the charm and bottom quark masses, we demonstrate that the spectra change from the SU(3) symmetry patterns to the heavy quark symmetry ones.
Subfields: Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/d8f3e40b4e90b03080a8e9365f83e836fc29748c
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In Nuclear and High Energy Physics
Citations in the corpus
- Opportunities in Flavour Physics at the HL-LHC and HE-LHC (2018, background): “However, the masses and decay widths of ΛQ=c,b, at least the charmed ones, can also be accommodated within usual constituent quark models (see for instance [558, 559]), and thus the importance of the molecular components in their structure has not been settled yet.”