Speaker
Mr
Lorenzo Riggio
(INFN)
Description
We present a lattice QCD determination of the vector and scalar form
factors of the kaon semileptonic decay K->pi nu l , and of the D meson semileptonic
decays D->(K/pi) nu l which are relevant for the
extraction of the CKM matrix element |Vus|, |Vcd| and |Vcs| from experimental data.
Our preliminary results are based on the gauge configurations produced by the
European Twisted Mass Collaboration with Nf=2+1+1 dynamical fermions,
which account for the sea quark effects of the up, down, strange and
charm quarks. We simulated at three different values of the lattice
spacing and with pion masses as small as 210 MeV.
Primary author
Mr
Lorenzo Riggio
(INFN)
Co-authors
Dr
Cecilia Tarantino
(Universita' di Roma Tre, INFN)
Ms
Eleonora Picca
(Universita' di Roma Tre)
Dr
Francesco Sanfilippo
(University of Southampton)
Dr
Nuria Carrasco
(INFN)
Mr
Paolo Lami
(Universita' di Roma Tre)
Dr
Petros Dimopoulos
(Centro Fermi, Universita' di Roma Tor Vergata)
Dr
Roberto Frezzotti
(Universita' di Roma Tor Vergata, INFN)
Dr
Silvano Simula
(INFN)
Prof.
Vittorio Lubicz
(Universita' Roma Tre)
