Decay constants of charm and beauty pseudoscalar heavy-light mesons on fine lattices

Simple item page
dc.creatorKhan, A. Ali
dc.creatorBraun, V.
dc.creatorBurch, T.
dc.creatorGöckeler, M
dc.creatorLacagnina, G.
dc.creatorSchäfer, A.
dc.creatorSchierholz, G.
dc.date2007-01-19
dc.date2007-06-29
dc.date.accessioned2026-07-07T11:01:57Z
dc.date.available2026-07-07T11:01:57Z
dc.descriptionWe compute decay constants of heavy-light mesons in quenched lattice QCD with a lattice spacing of a ~ 0.04 fm using non-perturbatively O(a) improved Wilson fermions and O(a) improved currents. We obtain f_{D_s} = 220(6)(5)(11) MeV, f_D = 206(6)(3)(22) MeV, f_{B_s} = 205(7)(26)(17) MeV and f_B = 190(8)(23)(25) MeV, using the Sommer parameter r_0 = 0.5 fm to set the scale. The first error is statistical, the second systematic and the third from assuming a +-10% uncertainty in the experimental value of r_0. A detailed discussion is given in the text. We also present results for the meson decay constants f_K and f_πand the ρmeson mass.
dc.description13 pages, 7 figures. Replaced version contains analysis in terms of improved quark masses instead of bare quark masses, result for f_B changed by 1 MeV. Several typos corrected, in particular error bars in table 4. Version accepted in PLB
dc.identifierhttps://arxiv.org/abs/hep-lat/0701015
dc.identifierhttp://arxiv.org/abs/hep-lat/0701015
dc.identifierPhys.Lett.B652:150-157,2007
dc.identifierdoi:10.1016/j.physletb.2007.06.066
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/188106
dc.subjectHigh Energy Physics - Lattice
dc.titleDecay constants of charm and beauty pseudoscalar heavy-light mesons on fine lattices
dc.typetext

Files

Collections

arXiv