86 citations · 556 across the 22 of their papers we have counts for
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Contribution from Duality Violations to the theoretical error on alpha_s
O. Cata, M. Golterman, S. Peris
Duality Violations (DVs) is a nickname for the failure of the Operator Product Expansion to describe QCD correlators on the physical axis. Using a physically motivated ansatz, a fi…
Possible duality violations in tau decay and their impact on the determination of alpha_s
Oscar Cata, Maarten Golterman, Santiago Peris
We discuss the issue of duality violations in hadronic tau decay. After introducing a physically motivated ansatz for duality violations, we estimate their possible size by fitting…
Estimate of the systematic error in tau decay due to duality violations
Oscar Cata, Maarten Golterman, Santiago Peris
With the help of a physically motivated ansatz, which is fitted to the data, we estimate the size of possible duality violations in hadronic tau decay. The result is that the uncer…
QCD with rooted staggered fermions
Maarten Golterman
In this talk, I will give an overview of the theoretical status of staggered Lattice QCD with the "fourth-root trick." In this regularization of QCD, a separate staggered quark fie…
Unraveling duality violations in hadronic tau decays
Oscar Cata, Maarten Golterman, Santi Peris
There are some indications from recent determinations of the strong coupling constant alpha_s and the gluon condensate that the Operator Product Expansion may not be accurate enoug…
On the relation between low-energy constants and resonance saturation
Maarten Golterman, Santi Peris
Although there are phenomenological indications that the low-energy constants in the chiral lagrangian may be understood in terms of a finite number of hadronic resonances, it rema…