Speaker
Lorenzo Orifici
(University of Rome III and INFN - Roma Tre)
Description
We investigate the form factors relevant in the K -> pion semileptonic decays using maximally twisted-mass fermions with two flavors of dynamical quarks.
The simulations cover pion masses as light as 260 MeV and four values of the lattice spacing, from ~ 0.05 up to ~ 0.1 fm, which allow to compute accurately the continuum limit.
SU(2) Chiral Perturbation Theory is applied to the extrapolation of the form factors to the physical point with their full momentum dependence. Our results are compared with the experimental data for the extraction of the Cabibbo angle |V_{us}|.
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Primary authors
Dr
Cecilia Tarantino
(University of Rome III and INFN - Roma Tre)
Dr
Federico Mescia
(Universitat de Barcelona)
Lorenzo Orifici
(University of Rome III and INFN - Roma Tre)
Dr
Silvano Simula
(INFN - Roma Tre)
Prof.
Vittorio Lubicz
(University of Rome III and INFN - Roma Tre)
