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The strong coupling from tau decays without prejudice
Diogo Boito, Maarten Golterman, Matthias Jamin +4
We review our recent determination of the strong coupling α_s from the OPAL data for non-strange hadronic tau decays. We find that α_s(m^2_τ) =0.325+-0.018 using fixed-order pertur…
Low-energy constants and condensates from the tau hadronic spectral functions
Diogo Boito, Maarten Golterman, Matthias Jamin +2
We use results of fits to the OPAL spectral data, obtained from non-strange hadronic τdecays, to evaluate the difference between the vector and axial current correlators, Π_{V-A}(Q…
Pade approximants and g-2 for the muon
Christopher Aubin, Thomas Blum, Maarten Golterman +1
The leading hadronic contribution to the muon anomalous magnetic moment is given by a weighted euclidean momentum integral of the hadronic vacuum polarization. This integral is dom…
Model-independent parametrization of the hadronic vacuum polarization and g-2 for the muon on the lattice
Christopher Aubin, Thomas Blum, Maarten Golterman +1
The leading hadronic contribution to the muon anomalous magnetic moment is given by a weighted integral over euclidean momentum of the hadronic vacuum polarization. This integral i…
An updated determination of α_s from tau decays
Diogo Boito, Maarten Golterman, Matthias Jamin +4
Employing our previous framework to treat non-perturbative effects self-consistently, including duality violations, we update the determination of the strong coupling, α_s, using a…
The Gribov horizon and the one-loop color-Coulomb potential
Maarten Golterman, Jeff Greensite, Santiago Peris +1
We recalculate the color-Coulomb potential to one-loop order, under the assumption that the effect of the Gribov horizon is to make i) the transverse gluon propagator less singular…