K-meson vector and tensor decay constants and BK-parameter from Nf=2 tmQCD

Details K-meson vector and tensor decay constants and BK-parameter from Nf=2 tmQCD K-meson vector and tensor decay constants and BK-parameter from Nf=2 tmQCD

2008-10-14

arxiv.org/abs/0810.2443v1

PoS LATTICE2008:271,2008

Physics

High Energy Physics

High Energy Physics - Lattice

7 pages, 4 figures, talk presented at the XXVI International Symposium on Lattice Field Theory, July 14 - 19, 2008, Williamsbu

Scientific paper

We present work in progress on the computation of the K-meson vector and tensor decay constants, as well as the B-parameter in Kaon oscillations. Our simulations are performed in a partially quenched setup, with two dynamical (sea) Wilson quark flavours, having a maximally twisted mass term. Valence quarks are either of the standard or the Osterwalder-Seiler maximally twisted variety. These two regularizations can be suitably combined in order to obtain a BK parameter which is both multiplicatively renormalizable and O(a) improved.

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