Beyond the standard model kaon mixing with physical masses.
May 29, 2019
We present results from a calculation of beyond the standard model (BSM) kaon mixing including data at the physical point.
We simulare $N_f=2+1$ QCD with and Iwasaki gauge and domain wall fermions on 8 ensembles, spanning 3 lattice spacings and pion masses from the physical value up to 430MeV.
The ratio of the BSM to standard model (SM) matrix elements are extracted from the correlation functions and renormalised using RI-SMOM Rome-Southampton method with non-exceptional momenta.
The results at the physical point continuum limit are found by performing a simultaneous continuum chiral extrapolation.
In this work we gain consistency with our previous results and achieve a reduction in both the statistical and systematic error.
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