Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
1994-07-29
Phys.Lett. B337 (1994) 340-346
Physics
High Energy Physics
High Energy Physics - Lattice
11 pages, Figures obtained upon request from Borrelli@psiclu.cern.ch
Scientific paper
10.1016/0370-2693(94)90985-7
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 $\Lambda_b$ $$ M_{\Lambda_b}= 5.728 \pm 0.144 \pm 0.018 {\rm GeV}.$$ 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.
Alexandrou Constantia
Borrelli Arianna
Güsken Stephan
Jegerlehner Fred
Schilling Klaus
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