$B_K$ from twisted mass QCD

P. Dimopoulos; J. Heitger; C. Pena; S. Sint; A. Vladikas

doi:10.1016/S0920-5632(03)02565-9

$B_K$ from twisted mass QCD

High Energy Physics - Lattice 2009-11-10 v1

Authors: P. Dimopoulos , J. Heitger , C. Pena , S. Sint , A. Vladikas

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Abstract

We present some preliminary results for $B_K$ at $\beta=6.0$ , using the twisted mass QCD formalism for the computation of bare matrix elements of the $\Delta S=2$ operator. The main advantage of the method is that mixing with other $d=6$ operators under renormalisation is avoided. Moreover the operator renormalisation is performed in the Schr\"odinger functional (SF) framework, using earlier results of our collaboration for the corresponding step scaling function.

Keywords

non-perturbative renormalization in lattice qcd

Cite

@article{arxiv.hep-lat/0309134,
  title  = {$B_K$ from twisted mass QCD},
  author = {P. Dimopoulos and J. Heitger and C. Pena and S. Sint and A. Vladikas},
  journal= {arXiv preprint arXiv:hep-lat/0309134},
  year   = {2009}
}

Comments

Lattice2003(matrix), 3 pages, 2 figures

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