Neutral Kaon mixing beyond the Standard Model

Abstract

We compute the hadronic matrix elements of the four-quark operators needed for the study of $K^0-{\bar{K}}^0$ mixing beyond the Standard Model. We have used $n_f=2+1$ flavours of domain wall fermion (DWF) at two values of the lattice spacing ($a\approx 0.08$ and $a\approx 0.11\text{fm}$) and with lightest unitary pion mass of $\approx 300\text{MeV}$. Renormalisation is performed non-perturbatively and the impact of different intermediate momentum schemes is investigated.

Talk presented at the 33rd International Symposium on Lattice Field Theory (Lattice 2015), 14-18 July 2015, Kobe International Conference Center, Kobe, Japan

References in corpus (2)

• Continuum Limit Physics from 2+1 Flavor Domain Wall QCD
• Fourier Accelerated Conjugate Gradient Lattice Gauge Fixing

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• A new look at the theory uncertainty of epsilon_K
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• On the perturbative renormalisation of four-quark operators for new physics