Contribution Parallel
Mass Spectra of $D_s$ and $\Omega_c$ in $N_f=2+1+1$ Lattice QCD with Domain-Wall Quarks
Speakers
- Prof. Ting-Wai CHIU
Primary authors
- Prof. Ting-Wai CHIU (Physics Department, National Taiwan University)
Content
We perform hybrid Monte Carlo simulation of lattice QCD with $N_f=2+1+1 $ optimal domain-wall quarks on the $ 32^3 \times 64 $ lattice with lattice spacing $ a \sim 0.06 $~fm, and generate 3 gauge ensembles with pion masses 280-400 MeV. We compute the point-to-point quark propagators, and measure the time-correlation functions of meson and baryon interpolators.
The mass spectra of the lowest-lying mesons and baryons containing s and c quarks are in good agreement with the high energy experimental values, together with the predictions of the charmed baryons which have not been observed in experiments.
For the new narrow $ \Omega_c $ baryon states recently observed by the LHCb Collaboration [arXiv:1703.04639],
the lowest-lying $ \Omega_c(3000)$ agrees with our predicted mass $M=3015(29)(15)$ of the lowest-lying
$ \Omega_c $ with $J^P = 1/2^{-} $ [arXiv:1701.02581].
Preferred track (if multiple tracks have been selected)
Hadron Spectroscopy and Interactions
