Sea quark effects in B_K from N_f=2 clover-improved Wilson fermions

Details Sea quark effects in B_K from N_f=2 clover-improved Wilson fermions Sea quark effects in B_K from N_f=2 clover-improved Wilson fermions

2004-09-14

arxiv.org/abs/hep-lat/0409075v1

Nucl.Phys.Proc.Suppl.140:359-361,2005

Physics

High Energy Physics

High Energy Physics - Lattice

3 pages, 1 figure. Talk given at Lattice2004(weak), Fermilab 21-26 June 2004

Scientific paper

10.1016/j.nuclphysbps.2004.11.34

We report calculations of B_K using two flavours of dynamical clover-improved Wilson lattice fermions and look for dependence on the dynamical quark mass at fixed lattice spacing. We see some evidence for dynamical quark effects. In particular B_K decreases as the sea quark masses are reduced towards the up/down quark mass. Our meson masses are quite heavy and a firm prediction of B_K is a task for future simulations.

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