Precision computation of the leptonic D_s-meson decay constant in quenched QCD

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dc.creatorJuttner, Andreas
dc.creatorRolf, Juri
dc.date2003-06-30
dc.date.accessioned2026-07-07T03:49:56Z
dc.date.available2026-07-07T03:49:56Z
dc.descriptionWe summarize a computation of the leptonic decay constant f_D_s of the D_s-meson in quenched QCD on the lattice. We perform a direct simulation at the masses of the strange and the charm quarks at four different lattice spacings from approximately 0.1 fm to 0.05 fm. Fully non perturbative O(a)-improvement is employed. After taking the continuum limit we arrive at a value of f_D_s=252(9) MeV, when setting the scale with the Kaon decay constant f_K=160 MeV. Setting the scale with the nucleon mass instead leads to a decrease of about 20 MeV of f_D_s.
dc.descriptionInvited talk at the Workshop on the CKM Unitarity Triangle, IPPP Durham, April 2003 (eConf C0304052). 4 pages LaTeX, 2 eps figures
dc.identifierhttps://arxiv.org/abs/hep-ph/0306299
dc.identifierhttp://arxiv.org/abs/hep-ph/0306299
dc.identifiereConf C0304052 (2003) WG508
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/42602
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectHigh Energy Physics - Lattice
dc.titlePrecision computation of the leptonic D_s-meson decay constant in quenched QCD
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