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Pseudo-scalar meson form factors with maximally twisted Wilson fermions at Nf=2
Presenter: Silvano Simula — INFN - Roma 3
Recent unquenched simulations performed using the tree-level Symanzik improved gauge action at β=3.9 and two dynamical, maximally twisted Wilson fermions have been used to calculate a variety of 3-point correlation functions relevant for semileptonic weak decays and electromagnetic transitions of light and heavy-light pseudo-scalar mesons.
Several results obtained with pion masses down to ∼300 MeV at a lattice spacing of ∼0.09 fm will be presented:
1) the Isgur-Wise function in the heavy-quark limit;
2) the vector, scalar and tensor form factors of the pion;
3) the vector and scalar form factors relevant for Kl3 decay.
© 2006, University of Regensburg, Dept. of Physicscontact: lat07 at physik.uni-regensburg.de