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Sea quark effects in B(K) from N(f)= 2 clover-improved Wilson fermions

Record type: Article

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.

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Citation

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, (49), pp. 1-15. (doi:10.1088/1126-6708/2004/11/049).

More information

Published date: 11 December 2004
Keywords: quark masses and sm parameters, kaon physics, lattice qcd
Organisations: Physics & Astronomy

Identifiers

Local EPrints ID: 12661
URI: http://eprints.soton.ac.uk/id/eprint/12661
PURE UUID: 00a8eef0-8d22-4115-b3de-766fd6d2c1d3
ORCID for Jonathan M. Flynn: ORCID iD orcid.org/0000-0002-6280-1677

Catalogue record

Date deposited: 31 Dec 2004
Last modified: 17 Jul 2017 17:02

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Contributors

Author: Jonathan M. Flynn ORCID iD
Author: Federico Mescia
Author: Abdullah Shams Bin Tariq

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