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12 papers · 2 filters
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…
Distinguishing among Technicolor/Warped Scenarios in Dileptons
Piyali Banerjee, Adam Martin, Veronica Sanz
Models of dynamical electroweak symmetry breaking usually include new spin-1 resonances, whose couplings and masses have to satisfy electroweak precision tests. We propose to use d…
How Many Supersymmetries?
Matti Heikinheimo, Moshe Kellerstein, Veronica Sanz
Supersymmetry in the gauge sector could be realized as N=1 or N=2 Supersymmetry, but the current LHC searches assume an N=1 realization. In this paper we show that squarks could be…
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…