Heavy-Baryon Spectroscopy from Lattice QCD

Abstract

We use a four-dimensional lattice calculation of the full-QCD (quantum chromodynamics, the non-abliean gauge theory of the strong interactions of quarks and gluons) path integrals needed to determine the masses of the charmed and bottom baryons. In the charm sector, our results are in good agreement with experiment within our systematics, except for the spin-1/2 ${\Xi }_{cc}$, for which we found the isospin-averaged mass to be ${\Xi }_{cc}$ to be $3665\pm 17\pm 14_{-78}^{+0}$ MeV. We predict the mass of the (isospin-averaged) spin-1/2 ${\Omega }_{cc}$ to be $3763\pm 19\pm 26_{-79}^{+13}$ {MeV}. In the bottom sector, our results are also in agreement with experimental observations and other lattice calculations within our statistical and systematic errors. In particular, we find the mass of the ${\Omega }_b$ to be consistent with the recent CDF measurement. We also predict the mass for the as yet unobserved ${\Xi }_b^{\prime }$ to be 5955(27) MeV.

Invited talk at Conference of Computational Physics 2009. 3 pages

References in corpus (13)

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• Heavy baryon mass spectrum from lattice QCD with 2+1 dynamical sea quark flavors
• Bottom-Hadron Mass Splittings from Static-Quark Action on 2+1-Flavor Lattices

Cited by in corpus (8)

• Charmed-Baryon Spectroscopy from Lattice QCD with N_f=2+1+1 Flavors
• Spectroscopy of doubly-charmed baryons from lattice QCD
• Meson and Baryon dispersion relations with Brillouin fermions
• Effective field theory for double heavy baryons at strong coupling
• Diquark properties from full QCD lattice simulations
• The static-light baryon spectrum from twisted mass lattice QCD
• The spectrum of static-light baryons in twisted mass lattice QCD
• Baryon spectroscopy and heavy quarks