273 citations · 1.6k across the 83 of their papers we have counts for
8 papers · 1 filter
alpha_s from tau decays revisited
D. Boito, O. Cata, M. Golterman +4
Being a determination at low energies, the analysis of hadronic tau decay data provides a rather precise determination of the strong coupling alpha_s after evolving the result to M…
Issues in determining alpha_s from hadronic tau decay and electroproduction data
D. Boito, O. Cata, M. Golterman +4
We discuss some key issues associated with duality-violating and non-perturbative OPE contributions to the theoretical representations of light quark current-current two-point func…
On the Extraction of the Strong Coupling from Hadronic Tau Decay
Diogo Boito, Oscar Catà, Maarten Golterman +4
The finite energy sum rule extraction of the strong coupling α_s from hadronic τ decay data provides one of its most precise experimental determinations. As precision improves, sma…
A new determination of α_s from hadronic τ decays
Diogo Boito, Oscar Cata, Maarten Golterman +4
We present a new framework for the extraction of the strong coupling from hadronic τdecays through finite-energy sum rules. Our focus is on the small, but still significant non-per…
Duality Violation and the K --> pi pi Electroweak Penguin Operator Matrix Elements from Hadronic Tau Decays
D. Boito, O. Cata, M. Golterman +4
We discuss a preliminary study of the impact of duality violations on extractions from tau decay data of the D=6 VEVs which determine chiral limit Standard Model K-->pi pi matrix e…
Dispersive representation of the scalar and vector Kpi form factors for tau --> K pi nu_tau and K_{l3} decays
Véronique Bernard, Diogo R. Boito, Emilie Passemar
Recently, the tau --> K pi nu_tau decay spectrum has been measured by the Belle and BaBar collaborations. In this work, we present an analysis of such decays introducing a dispersi…