Energies of B_s meson excited states - a lattice study
| dc.creator | UKQCD Collaboration | |
| dc.creator | Koponen, J. | |
| dc.date | 2007-08-21 | |
| dc.date | 2008-08-27 | |
| dc.date.accessioned | 2026-07-07T11:52:59Z | |
| dc.date.available | 2026-07-07T11:52:59Z | |
| dc.description | This is a follow-up to our earlier work on the energies and radial distributions of heavy-light mesons. The heavy quark is taken to be static (infinitely heavy) and the light quark has a mass about that of the strange quark. We now concentrate on the energies of the excited states with higher angular momentum and with a radial node. A new improvement is the use of hypercubic blocking in the time direction. The calculation is carried out with dynamical fermions on a 16 cubed times 32 lattice with a lattice spacing approximately 0.1 fm generated using a non-perturbatively improved clover action. In nature the closest equivalent of this heavy-light system is the B_s meson, which allows us to compare our lattice calculations to experimental results (where available) or to give a prediction where the excited states, particularly P-wave states, should lie. We pay special attention to the spin-orbit splitting, to see which one of the states (for a given angular momentum L) has the lower energy. An attempt is made to understand these results in terms of the Dirac equation. | |
| dc.description | 35 pages. v3: Data from two new lattices added. New results in several chapters | |
| dc.identifier | https://arxiv.org/abs/0708.2807 | |
| dc.identifier | http://arxiv.org/abs/0708.2807 | |
| dc.identifier | Phys.Rev.D78:074509,2008 | |
| dc.identifier | doi:10.1103/PhysRevD.78.074509 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/204379 | |
| dc.subject | High Energy Physics - Lattice | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Energies of B_s meson excited states - a lattice study | |
| dc.type | text |