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B_s meson excited states from the lattice

UKQCD Collaboration·A. M. Green·J. Ignatius·M. Jahma·J. Koponen·C. McNeile·C. Michael
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Abstract

This is a follow-up to our earlier work [Phys. Rev. D 65, 014512 (2002); Eur. Phys. J. C 28, 79 (2003); Phys. Rev. D 69, 094505 (2004)] for the energies and the charge (vector) and matter (scalar) distributions for S-wave states in a heavy-light meson, where the heavy quark is static and the light quark has a mass about that of the strange quark. We study the radial distributions of higher angular momentum states, namely P- and D-wave states. In nature the closest equivalent of this heavy-light system is the B_s meson. The calculation is carried out with dynamical fermions on a 16^3 times 32 lattice with a lattice spacing of about 0.10 fm generated with the non-perturbatively improved clover action. It is shown that several features of the energies and radial distributions are in qualitative agreement with what one expects from a simple one-body Dirac equation interpretation.

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UKQCD Collaboration, A. M. Green, J. Ignatius, M. Jahma, J. Koponen, C. McNeile, C. Michael. 2005-09-28. B_s meson excited states from the lattice. https://arxiv.org/abs/hep-lat/0509161

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