Strange quark mass from e+e- revisited and present status of light quark masses

Abstract

We reconsider the determinations of the strange quark mass m_s from e+e- into hadrons data using a new combination of FESR and revisiting the existing tau-like sum rules by including non-resonant contributions to the spectral functions. To order alpha_s^3 and including the tachyonic gluon mass lambda^2 contribution, which phenomenologically parametrizes the UV renormalon effect into the PT series, we obtain the invariant mass m_s=(119 +- 17)MeV leading to: m_s(2 GeV)=(104+- 15)MeV. Combining this value with the recent and independent phenomenological determinations from some other channels, to order alpha_s^3 and including lambda^2, we deduce the weighted average: m_s (2 GeV)=(96.1 +- 4.8)MeV . The positivity of the spectral functions in the (pseudo)scalar [resp. vector] channels leads to the lower [resp. upper] bounds of m_s(2 GeV): (71 +- 4) MeV < m_s(2 GeV) < (151 +- 14) MeV, to order alpha_s^3. Using the ChPT mass ratio r_3 = 2m_s/(m_u+m_d)=24.2 +- 1.5, and the average value of m_s, we deduce: (m_u+m_d)(2 GeV)=(7.9 +- 0.6) MeV, consistent with the pion sum rule result, which, combined with the ChPT value for m_u/m_d, gives: m_d(2 GeV)=(5.1 +- 0.4)MeV and m_u(2 GeV)=(2.8 +- 0.2)MeV. Finally, using (m_u+m_d) from the pion sum rule and the average value of m_s (without the pion sum rule), the method gives: r_3= 23.5 +- 5.8 in perfect agreement with the ChPT ratio, indicating the self-consistency of the sum rule results. Using the value: m_b(m_b)=(4.23 +- 0.06) GeV, we also obtain the model-building useful scale-independent mass ratio: m_b/m_s=50 +- 3.

Updated and improved average values. Version to appear in Phys. Rev. D

References in corpus (12)

• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• Scalar Correlator at O(alpha_s^4), Higgs Decay into b-quarks and Bounds on the Light Quark Masses
• V_us and m_s from hadronic tau decays
• Non-perturbative quark mass renormalization in two-flavor QCD
• QCD Tests of the Puzzling Scalar Mesons
• High-precision determination of the light-quark masses from realistic lattice QCD
• Strange Quark Mass from Tau Lepton Decays with O(alpha_s^3) Accuracy
• Recent results from lattice calculations
• Non-perturbatively renormalised light quark masses from a lattice simulation with N_f=2
• Estimating the Unquenched Strange Quark Mass from the Lattice Axial Ward Identity
• Strange Quark, Tachyonic Gluon Masses and V_{us} from Hadronic Tau Decays
• Extraction of m_s and |V_us| from Hadronic Tau Decays

Cited by in corpus (55)

• FLAG Review 2019
• FLAG Review 2021
• Review of lattice results concerning low energy particle physics
• Higher-Twist Distribution Amplitudes of the K Meson in QCD
• Chiral Perturbation Theory and Baryon Properties
• Can the X(3872) be a 1^{++} four-quark state?
• B->V gamma Beyond QCD Factorisation
• Twist-3 Distribution Amplitudes of K* and phi Mesons
• QCD Sum Rules Approach to the $X,Y$ and $Z$ States
• Twist-4 Distribution Amplitudes of the K${}^{\ast }$ and $\varphi$ Mesons in QCD
• Power corrections to alpha_s(M_τ),|V_{us}| and m_s
• Scalar K pi form factor and light quark masses
• Gluon Condensates and m_b(m_b) from QCD-Exponential Moments at Higher Orders
• Gluon condensates and c, b quark masses from quarkonia ratios of moments
• |V_td/V_ts| from B-> V gamma
• Duality between QCD Perturbative Series and Power Corrections
• FLAG Review 2024
• Magnetic Susceptibility of the Quark Condensate and Polarization from Chiral Models
• QCD Parameters Correlations from Heavy Quarkonia
• Analytical dispersive construction of $\eta \to 3\pi$ amplitude: First order in isospin breaking
• Time-dependent CP Asymmetry in B->K* gamma as a (Quasi) Null Test of the Standard Model
• A fresh look into m_{c,b} and precise f_{D_(s),B_(s)} from heavy-light QCD spectral sum rules
• SU(3) mass-splittings of heavy-baryons in QCD
• XYZ-like Spectra from Laplace Sum Rule at N2LO in the Chiral Limit
• Relation between $T_{cc,bb}$ and $X_{c,b}$ from QCD
• Mass-splittings of doubly heavy baryons in QCD
• Strange Quark Mass from Pseudoscalar Sum Rule with O(alpha_s^4) Accuracy
• 1^{-+} light exotic mesons in QCD
• On the nature of the X(3872) from QCD
• Quark Matter in a Strong Magnetic Background
• Gluonium nature of the sigma/f_0(600) from its coupling to KK
• Improved light quark masses from pseudoscalar sum rules
• Contribution of $DK$ Continuum in the QCD Sum Rule for $D_{sJ}(2317)$
• Nature of the X(5568) : a critical Laplace sum rule analysis at N2LO
• A Fresh Look into the Neutron EDM and Magnetic Susceptibility
• Strange quark mass from Finite Energy QCD sum rules to five loops
• Light scalar mesons in QCD
• SVZ sum rules : 30 + 1 years later
• The B_{s0} meson and the B_{s0}B K coupling from QCD sum rules
• Up and down quark masses from Finite Energy QCD sum rules to five loops
• XYZ-SU3 Breakings from Laplace Sum Rules at Higher Orders
• Strange quark condensate from QCD sum rules to five loops
• 1-- and 0++ heavy four-quark and molecule states in QCD
• $1^{++}$ Nonet Singlet-Octet Mixing Angle, Strange Quark Mass, and Strange Quark Condensate
• Revisiting f_B and m_b(m_b) from HQET spectral sum rules
• Reexamining charmless B\to PV decays in QCD factorization approach
• Strange sea distributions of the nucleon
• Joint Extraction of m_s and V_us from Hadronic Tau Decays
• Summary on m_{c,b}(m_{c,b}) and precise f_{D_(s),B_(s)} from heavy-light QCD spectral sum rules
• Light quark masses from QCD sum rules with minimal hadronic bias
• Constraint on the light quark mass $m_q$ from QCD Sum Rules in the $I=0$ scalar channel
• Baryons in the Field Correlator Method: Effects of the Running Strong Coupling
• Doubly heavy Baryons from QCD Spectral Sum Rules
• SU(3)-symmetry breaking effects and mass splitting in scalar and pseudoscalar $D^{+}$ mesons from QCD sum rules
• 1-- and 0++ Four-Quarks and Molecules from QCD Spectral Sum Rules