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 UKQCD Collaboration (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 ?S = 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.

Item Type: Article
Digital Object Identifier (DOI): doi:10.1088/1126-6708/2004/11/049
ISSNs: 1126-6708 (print)
Related URLs:
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
ePrint ID: 57246
Accepted Date and Publication Date:
November 2004Published
Date Deposited: 14 Aug 2008
Last Modified: 31 Mar 2016 12:38

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