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Beautiful baryons from lattice QCD
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 a...
| Autores principales: | , , , , , , |
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| Lenguaje: | eng |
| Publicado: |
1994
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1016/0370-2693(94)90985-7 http://cds.cern.ch/record/266666 |
| Sumario: | 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. ------- Figures obtained upon request from borrelli@psiclu.cern.ch. |
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