Excited B mesons from the lattice



Collaboration, UKQCD, Green, AM, Koponen, J, McNeile, C, Michael, C and Thompson, G
Excited B mesons from the lattice. Phys.Rev.D, 69. 094505 - ?.

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Abstract

We determine the energies of the excited states of a heavy-light meson $Q\bar{q}$, with a static heavy quark and light quark with mass approximately that of the strange quark from both quenched lattices and with dynamical fermions. We are able to explore the energies of orbital excitations up to L=3, the spin-orbit splitting up to L=2 and the first radial excitation. These $b \bar{s}$ mesons will be very narrow if their mass is less than 5775 MeV -- the $BK$ threshold. We investigate this in detail and present evidence that the scalar meson (L=1) will be very narrow and that as many as 6 $b \bar{s}$ excited states will have energies close to the $BK$ threshold and should also be relatively narrow.

Item Type: Article
Additional Information: 17 pages, 6 ps figures
Uncontrolled Keywords: hep-lat, hep-lat, hep-ph
Subjects: Q Science > QC Physics
Divisions: ?? dep_math ??
Depositing User: Symplectic Admin
Date Deposited: 31 Oct 2008 11:25
Last Modified: 16 Sep 2020 07:10
DOI: 10.1103/PhysRevD.69.094505
Publisher's Statement : ©2004 The American Physical Society. Users are advised to view the Statement of Copyright Copyright 2008© by The American Physical Society, as it relates to the published version -http://prd.aps.org/info/copyright.html
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URI: http://livrepository.liverpool.ac.uk/id/eprint/494