55 citations · 95 across the 7 of their papers we have counts for
7 papers · 1 filter
Reanalysis of pion pion phase shifts from K -> pi pi decays
V. Cirigliano, G. Ecker, A. Pich
We re-investigate the impact of isospin violation for extracting the s-wave pion pion scattering phase shift difference delta_0(M_K) - delta_2(M_K) from K -> pi pi decays. Compared…
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…
Recent Progress on Tau Lepton Physics
A. Pich
Some important aspects of hadronic tau decays are reviewed: the determination of alpha_s from the inclusive tau hadronic width, the measurement of |V_{us}| through the Cabibbo-supp…
Theoretical progress on the V_us determination from tau decays
Elvira Gamiz, Matthias Jamin, Antonio Pich +2
A very precise determination of V_us can be obtained from the semi-inclusive hadronic decay width of the tau lepton into final states with strangeness. The ratio of the Cabibbo-sup…
|V_us| and m_s from hadronic tau decays
Elvira Gamiz, Matthias Jamin, Antonio Pich +2
Recent progress in the determination of |V_us| employing strange hadronic tau-decay data are reported. This includes using the recent OPAL update of the strange spectral function,…
Determination of |V_us| from hadronic tau decays
E. Gamiz, M. Jamin, A. Pich +2
The recent update of the strange spectral function and the moments of the invariant mass distribution by the OPAL collaboration from hadronic tau decay data are employed to determi…