Embedding diquarks in static-light-light baryons on the lattice gives gauge-invariant evidence that the good diquark is lightest and spherical, with a preliminary trend supporting heavy-quark spin symmetry.
Bottom baryons from a dynamical lattice QCD simulation
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abstract
Bottom baryon masses are calculated based on a 2+1 flavor dynamical lattice QCD simulation. The gauge field configurations were computed by the CP-PACS and JLQCD collaborations using an improved clover action. The bottom quark is described using lattice NRQCD. Results are presented for single and double-b baryons at one lattice spacing. Comparison with experimental values is discussed.
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Diquarks in lattice QCD
Embedding diquarks in static-light-light baryons on the lattice gives gauge-invariant evidence that the good diquark is lightest and spherical, with a preliminary trend supporting heavy-quark spin symmetry.