%0 Conference Proceedings
%T QCD parameter correlations from heavy quarkonia
%+ Laboratoire Univers et Particules de Montpellier (LUPM)
%A Narison, Stephan
%< avec comité de lecture
%( Int.J.Mod.Phys.A
%B 20th High-Energy Physics International Conference in Quantum Chromodynamics
%C Montpellier, France
%V 33
%N 10
%P 1850045
%8 2017-07-03
%D 2017
%Z 1801.00592
%R 10.1142/S0217751X18500458
%K 11.55.Hx
%K 12.38.Lg
%K 13.20.-Gd
%K 14.65.Dw
%K 14.65.Fy
%K 14.70.Dj
%K QCD spectral sum rules
%K perturbative and nonperturbative calculations
%K hadron and quark masses
%K gluon condensates
%K gluon: condensation
%K strong interaction: coupling constant
%K charm: mass
%K bottom: mass
%K sum rule: Laplace
%K mass: energy dependence
%K quantum chromodynamics
%K correlation
%K data analysis method
%K mass difference
%K charmonium: hadron spectroscopy
%K stability
%K perturbation theory
%K higher-order
%K Q004M
%K Q005M
%Z Physics [physics]/High Energy Physics - Phenomenology [hep-ph]
%Z Physics [physics]/High Energy Physics - Experiment [hep-ex]
%Z Physics [physics]/High Energy Physics - Lattice [hep-lat]
%Z Physics [physics]/Nuclear Theory [nucl-th]Conference papers
%X Correlations between the QCD coupling αs, the gluon condensate 〈αsG2〉 and the c, b-quark running masses m̄c,b in the MS¯-scheme are explicitly studied (for the first time) from the (axial-)vector and (pseudo)scalar charmonium and bottomium ratios of Laplace sum rules (LSR) evaluated at the μ-subtraction stability point where perturbative (PT) @N2LO, N3LO and 〈αsG2〉 @NLO corrections are included. Our results clarify the (apparent) discrepancies between different estimates of 〈αsG2〉 from J/ψ sum rule and also show the sensitivity of the sum rules on the choice of the μ-subtraction scale which does not permit a high-precision estimate of m̄c,b. We obtain from the (axial-)vector [respectively (pseudo)scalar] channels: 〈αsG2〉 = (7.4 ± 2.2) [respectively (6.34 ± 0.39)] × 10−2 GeV4, m̄c(m̄c) = 1264(22) [respectively 1266(16)] MeV and m̄b(m̄b) = 4192(15) MeV. Combined with our recent determinations from vector channel, one obtains the average: m̄c(m̄c)|average = 1264(10) MeV and m̄b(m̄b)|average = 4184(9) MeV. Adding the two above values of the gluon condensate to different previous estimates in Table 1, one obtains the 2018 sum rule average: 〈αsG2〉| average = (6.35 ± 0.35) × 10−2 GeV4. The mass-splittings Mχ0c(0b) − Mηc(b) give @N2LO: αs(MZ) = 0.1182(15)(3) in good agreement with the world average.
%G English
%L hal-01704939
%U https://hal.science/hal-01704939
%~ IN2P3
%~ CNRS
%~ LUPM
%~ UNIV-MONTPELLIER
%~ LUPM_IFAC
%~ UM-2015-2021