6533b85afe1ef96bd12b8db7

RESEARCH PRODUCT

BK from the lattice with Wilson quarks

D. BećirevićPh. BoucaudV. GiménezV. LubiczM. Papinutto

subject

QuarkPhysicsPhysics and Astronomy (miscellaneous)010308 nuclear & particles physics[PHYS.HLAT]Physics [physics]/High Energy Physics - Lattice [hep-lat]High Energy Physics::LatticeHigh Energy Physics - Lattice (hep-lat)FísicaFOS: Physical sciences[PHYS.HLAT] Physics [physics]/High Energy Physics - Lattice [hep-lat]Fermion01 natural sciencesHigh Energy Physics - LatticeLattice constantLattice (order)0103 physical sciences010306 general physicsEngineering (miscellaneous)Mathematical physics

description

We report our results for the bag-parameter BK obtained from the quenched simulations on the lattice with Wilson fermions at three values of the lattice spacing. We implemented the method by which no subtraction of the mixing with other four-fermion dS=2 operators is needed. Our final result, in terms of the renormalisation group invariant bag-parameter, is BK = 0.96 +/- 0.10.

https://hal.archives-ouvertes.fr/hal-00278079