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

J. M. Flynn·F. Mescia·A. S. B. Tariq
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Abstract

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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J. M. Flynn, F. Mescia, A. S. B. Tariq. 2004-09-14. Sea quark effects in B_K from N_f=2 clover-improved Wilson fermions. https://doi.org/10.1016/j.nuclphysbps.2004.11.348

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