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108 papers · 2 filters
An explanation of the as a bound state
P. Gonzalez, E. Oset, J. Vijande
We use the interaction in the hidden gauge formalism to dynamically generate and resonances. We show, through a comparison of the results from this analy…
Studying the Sivers function by model calculations
A. Courtoy, S. Scopetta, V. Vento
A formalism is presented to evaluate the Sivers function in constituent quark models. A non-relativistic reduction of the scheme is performed and applied to the Isgur-Karl model. T…
Theoretical study of neutrino-induced coherent pion production off nuclei at T2K and MiniBooNE energies
J. E. Amaro, E. Hernández, J. Nieves +1
We have developed a model for neutrino-induced coherent pion production off nuclei in the energy regime of interest for present and forthcoming neutrino oscillation experiments. It…
Low-Energy Constants from Resonance Chiral Theory
Antonio Pich
I discuss the recent attempts to build an effective chiral Lagrangian incorporating massive resonance states. A useful approximation scheme to organize the resonance Lagrangian is…
From hadronic tau decays to the chiral couplings L_10 and C_87
M. Gonzalez-Alonso, A. Pich, J. Prades
A sum rule analysis of the hadronic tau-decay data can be used to determine the low-energy constants L10(mu) and C87(mu). These constants are QCD chiral-order parameters, which app…
Probing non-standard neutrino-electron interactions with solar and reactor neutrinos
A. Bolaños, O. G. Miranda, A. Palazzo +2
Most neutrino mass extensions of the standard electroweak model entail non-standard interactions which, in the low energy limit, can be parametrized in term of effective four-fermi…