Speaker
Vincent Drach
(LPSC)
Description
We present first results on the octet and decuplet strange baryon
spectrum with N_f=2+1+1 twisted mass quarks using a mixed action
approach. Namely, we use an Osterwalder Seiler valence strange quark
with a mass matched to the kaon mass computed with the unitary action.
We also present results in the unitary setup, and compare with those
obtained in the mixed action.
This comparison is used to quantify the lattice artefacts introduced by
the mixed action approach.
We investigate the effect of the strange and charm quark in the sea by
using two lattice spacings and comparing with our N_f=2 results [1].
[1] ETMC, Phys. Rev. D 80 114503, 2009
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Primary author
Vincent Drach
(LPSC)
Co-authors
Prof.
Constantia Alexandrou
(University of Cyprus & Cyprus Institute)
Mr
Jaume Carbonell
(LPSC)
Prof.
Karl Jansen
(DESY-Zeuthen)
Dr
Mauro Papinutto
(LPSC)
