Lattice meson electric form factor using Wilson fermions

Meson Form-factors and Wave-functions with Wilson fermions

Results for semi-leptonic form-factors for processes like D→ Klν and the Bethe-Salpeter amplitudes (BSA) for pion and rho mesons are presented. The form-factor data is consistent with previous calculations. We find that the long distance fall-off of BSA for both π and ρ is very well fit by an exponential, but surprisingly the effective mass governing this fall-off is lighter than the pion’s. La...

Scalar Meson Spectroscopy with Lattice Staggered Fermions

Finite Temperature Meson Masses with Improved Quenched Wilson Fermions

We present recent results for meson screening masses with quenched Wilson fermions above and below the confinementdeconfinement phase transition. The action used in the simulation is the Sheikholeslami Wohlert action. The quark masses are chosen to be in a range going from light quarks up to the mass of the charm quark. These results are compared with zero temperature Wilson and high temperatur...

Lattice simulations of 2-colour QCD with Wilson fermions

Jon-Ivar Skullerud1,2,∗), Shinji Ejiri3, Simon Hands4 and Luigi Scorzato5,6 1ITF, Universiteit van Amsterdam, Valckenierstraat 65, 1018 XE Amsterdam, The Netherlands 2School of Mathematics, Trinity College, Dublin 2, Ireland 3Fakultät für Physik, Universität Bielefeld, Universitätsstraße 25, 33615 Bielefeld, Germany 4Department of Physics, University of Wales Swansea, Singleton Park, Swansea SA...

Extrapolations of Lattice Meson Form Factors

Abstract We use chiral perturbation theory to study the extrapolations necessary to make physical predictions from lattice QCD data for the electromagnetic form factors of pseudoscalar mesons. We focus on the quark mass, momentum, lattice spacing, and volume dependence and apply our results to simulations employing mixed actions of Ginsparg-Wilson valence quarks and staggered sea quarks. To det...