Beautiful Baryons from Lattice QCD

Abstract

We perform a lattice study of heavy baryons, containing one (${\Lambda }_b$) or two $b$-quarks (${\Xi }_b$). Using the quenched approximation we obtain for the mass of ${\Lambda }_b$ $$M_{{\Lambda }_b}=5.728\pm 0.144\pm 0.018\mathrm{GeV}.$$ The mass splitting between the ${\Lambda }_b$ and the B-meson is found to increase by about 20\% if the light quark mass is varied from the chiral limit to the strange quark mass.

11 pages, Figures obtained upon request from [email protected]

References in corpus (2)

• The Static Approximation of Heavy-Light Quark-Systems - A Systematic Lattice Study
• The Leptonic Decay Constants of $\bar{Q}q$ Mesons and the Lattice Resolution

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• Baryon Electromagnetic Properties in Partially Quenched Heavy Hadron Chiral Perturbation Theory
• Effective field theory for double heavy baryons at strong coupling
• Baryon Masses in Partially Quenched Heavy Hadron Chiral Perturbation Theory
• f_B and the Heavy-light Spectrum from NRQCD
• J/P=1/2+, J/P=3/2+ masses in statistical model
• The Heavy Hadron Spectrum
• Phase transition in finite density and temperature lattice QCD