Darmstadt 2008 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 34: Postersitzung

HK 34.65: Poster

Donnerstag, 13. März 2008, 14:00–16:00, Poster C3

B meson excitations with chirally improved light quarks — Tommy Burch^1,3, Dipanker Chakrabarti^1,4, •Christian Hagen¹, Christian Lang², Markus Limmer², Thilo Maurer¹, and Andreas Schäfer¹ — ¹University of Regensburg, Germany — ²University of Graz, Austria — ³University of Utah, USA — ⁴Swansea University, UK

We present our latest results for the excitations of static-light mesons on both quenched and unquenched lattices, where the light quarks are simulated using the chirally improved (CI) lattice Dirac operator. To improve our results we use a new technique to estimate the light quark propagator. The b quark is treated as infinitely heavy, in the so-called static approximation. We are able to find several excited states reaching from S-waves up to D-waves for both B and B_s.