1994/02/01 by Stéphan Narison, S. Narison · 3 citations
Earth and Planetary Sciences · Physics and Astronomy · #Geodesy #Geology #Geophysics and Gravity Measurements #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.1016/0370-2693(94)91115-0
published as Phys.Lett.B322:247-252,1994 · {{\bf \bf 9 pages, CERN-TH 7094/93 (published in Phys. Lett. B322 (1994) 247 )
openalex publication_date 1994/02/01 · arxiv created 1994/03/09 · arxiv updated 2011/01/27 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We present a compact analytic two-loop expression of the SU(3)f breaking effects on the ratio of the pseudoscalar decay constants RP ≡ fPS/fP (P ≡ D,B ), from which, we extract the precise values : RD = 1.15 ± .04, RB = 1.16 ± .05 , where the errors are mainly due to the uncalculated αs2-corrections. We also scan carefully the Mc (resp. Mb) mass dependence of fD (resp. fB) in view of precise measurements of the ``perturbative'' c and b pole quark masses from the future data of the decay constants fP.