$B_K$ 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

高能物理 - 格点 2009-11-10 v1

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

在 arXiv 上查看 ↗ PDF ↗ DOI ↗

摘要

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.

引用

@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}
}

备注

Lattice2003(matrix), 3 pages, 2 figures

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