Charmed baryons from lattice QCD

Spectroscopy of triply-charmed baryons from lattice QCD

The spectrum of excitations of triply-charmed baryons is computed using lattice QCD including dynamical light quark fields. The spectrum obtained has baryonic states with well-defined total spin up to 7 2 and the low-lying states closely resemble the expectation from models with an SU(6)×O(3) symmetry. Energy splittings between extracted states, including those due to spin-orbit coupling in the...

Charmed Baryon Spectroscopy from lattice QCD for N f = 2 + 1 flavours

ar X iv : h ep - l at / 0 30 70 25 v 1 1 6 Ju l 2 00 3 SHEP - 0319 Spectroscopy of Doubly - Charmed Baryons in Lattice QCD UKQCD Collaboration

We present results for masses of spin-1/2 and spin-3/2 double-charm baryons in quenched lattice QCD, from an exploratory study using a non-perturbatively improved clover action at β = 6.2. We have studied local operators and we observe, after appropriate projections, a good signal for the ground states. We also present results for single-charmed baryons and spin-splittings for both double-and s...

Charmed baryons in lattice QCD

Masses of singly and doubly charmed baryons are calculated in quenched lattice QCD using an improved action of the D234 type on an anisotropic lattice. The mass differences between spin 3/2 and spin 1/2 baryon states are calculated and compared to mass differences between vector and pseudoscalar mesons. The suppression of spin splittings in mesons containing heavy quarks, characteristic of quen...

Baryon Masses in Lattice QCD with Exact Chiral Symmetry

We investigate the baryon mass spectrum in quenched lattice QCD with exact chiral symmetry. For 100 gauge configurations generated with Wilson gauge action at β = 6.1 on the 20×40 lattice, we compute (point-to-point) quark propagators for 30 quark masses in the range 67 MeV ≤ mq ≤ 1790 MeV. For baryons only composed of strange and charm quarks, their masses are extracted directly from the time ...