Sea quark effects in B(K) from N(f)= 2 clover-improved Wilson fermions
UKQCD Collaboration, , Flynn, Jonathan M., Mescia, Federico and Tariq, Abdullah Shams Bin (2004) Sea quark effects in B(K) from N(f)= 2 clover-improved Wilson fermions. Journal of High Energy Physics, 11, (049), 1-14. (doi:10.1088/1126-6708/2004/11/049).
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We report calculations of the parameter BK appearing in the ΔS = 2 neutral kaon mixing matrix element, whose uncertainty limits the power of unitarity triangle constraints for testing the standard model or looking for new physics. We use 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 and in particular BK decreases as the sea quark masses are reduced towards the up/down quark mass.
|Keywords:||quark masses and sm parameters, kaon physics, lattice qcd|
|Subjects:||Q Science > QC Physics|
|Divisions:||University Structure - Pre August 2011 > School of Physics and Astronomy
|Date Deposited:||14 Aug 2008|
|Last Modified:||06 Aug 2015 02:46|
|RDF:||RDF+N-Triples, RDF+N3, RDF+XML, Browse.|
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