K0-K0bar mixing from the Schroedinger functional and twisted mass QCD

M. Guagnelli; J. Heitger; C. Pena; S. Sint; A. Vladikas

doi:10.1016/S0920-5632(01)01701-7

K0-K0bar mixing from the Schroedinger functional and twisted mass QCD

High Energy Physics - Lattice 2015-06-25 v2

Authors: M. Guagnelli , J. Heitger , C. Pena , S. Sint , A. Vladikas

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Abstract

We describe how the Schroedinger functional and twisted mass QCD can be used to compute the kaon B-parameter B_K on the lattice with Wilson fermions. This new approach is expected to reduce the systematic uncertainties on B_K through a better control of its (nonperturbative) renormalisation. Preliminary results for the bare matrix element in a physical volume of (1.5^3 x 4.5) fm^4 are presented. The renormalisation of the matrix element in a Schroedinger functional scheme is also discussed.

Keywords

K0-K0bar mixing Schroedinger functional twisted mass QCD kaon B-parameter Wilson fermions nonperturbative renormalization

Cite

@article{arxiv.hep-lat/0110097,
  title  = {K0-K0bar mixing from the Schroedinger functional and twisted mass QCD},
  author = {M. Guagnelli and J. Heitger and C. Pena and S. Sint and A. Vladikas},
  journal= {arXiv preprint arXiv:hep-lat/0110097},
  year   = {2015}
}

Comments

Lattice2001(matrixelement); 3 pages, 1 eps figure. Two misprints corrected

K0-K0bar mixing from the Schroedinger functional and twisted mass QCD

Abstract

Keywords

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