ar X iv : h ep - l at / 0 40 90 75 v 1 1 4 Se p 20 04 Sea quark e ff ects in B K from N f = 2 clover - improved Wilson fermions
نویسندگان
چکیده
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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تاریخ انتشار 2004