Charmed baryon spectrum from lattice QCD near the physical point

Bahtiyar, H.*; Can, K. U.*; Erkol, G.*; Gubler, P.; Oka, Makoto; Takahashi, Toru*

Physical Review D, 102(5), p.054513_1 - 054513_18, 2020/09

AA2020-0041.pdf:2.4MB

https://doi.org/10.1103/PhysRevD.102.054513

Spectrum of the ground state and excited states of charmed baryons was evaluated in the lattice QCD, the first principle of hadronic interaction. We deliver the spectrum of the positive and negative parity baryons with one, two or three charmed quarks. A variational approach was employed by the use of multiple operators with different Dirac matrix configurations and the smearings.

Spectrum of the charmed baryons in 2+1-flavor lattice QCD

Can, K. U.*; Bahtiyar, H.*; Erkol, G.*; Gubler, P.; Oka, Makoto; Takahashi, Toru*

JPS Conference Proceedings (Internet), 26, p.022028_1 - 022028_5, 2019/11

https://doi.org/10.7566/JPSCP.26.022028

Spectrum of the ground state and excited states of charmed baryons was evaluated in the lattice QCD, the first principle.

transition in lattice QCD

Bahtlyar, H.*; Can, K. U.*; Erkol, G.*; Oka, Makoto; Takahashi, Toru*

Physics Letters B, 772, p.121 - 126, 2017/09

https://doi.org/10.1016/j.physletb.2017.06.022

We evaluate the electromagnetic transition on 2+1 flavor lattices corresponding to a pion mass of MeV. We extract the magnetic Sachs and Pauli form factors which give the - transition magnetic moment and the decay rates of baryons. We did not find a signal for the magnetic form factor of the neutral transition , which is suppressed by the U-spin flavor symmetry. As a byproduct, we extract the magnetic form factors and the magnetic moments of and baryons, which give an insight to the dynamics of , and quarks having masses at different scales.

Look inside charmed-strange baryons from lattice QCD

Can, K. U.*; Erkol, G.*; Oka, Makoto; Takahashi, Toru*

Physical Review D, 92(11), p.114515_1 - 114515_14, 2015/12

https://doi.org/10.1103/PhysRevD.92.114515

The electromagnetic form factors of the spin baryons, namely and , are calculated in full QCD on 32364 PACS-CS lattices with a pion mass of 156(9) MeV. The electric charge radii and magnetic moments from the E0 and M1 multipole form factors are extracted. Results for the electric quadrupole form factors, E2, are also given. Quark sector contributions are computed individually for each observable and then combined to obtain the baryon properties. We find that the charm quark contributions are systematically smaller than the strange-quark contributions in the case of the charge radii and magnetic moments. E2 moments of the and provide a statistically significant data to conclude that their electric charge distributions are deformed to an oblate shape. Properties of the spin and baryons are also computed and a thorough comparison is given. This complete study gives valuable hints about the heavy-quark dynamics in charmed hadrons.