Weak hamiltonian Wilson Coefficients from Lattice QCD

Abstract

In this work we present a calculation of the Wilson Coefficients $C_1$ and $C_2$ of the Effective Weak Hamiltonian to all-orders in ${\alpha }_s$, using lattice simulations. Given the current availability of lattice spacings we restrict our calculation to unphysically light $W$ bosons around 2 GeV and we study the systematic uncertainties of the two Wilson Coefficients.

Comments: 8 pages, Proceedings of the 35th International Symposium on Lattice Field Theory, 18-24 June 2017, Granada, Spain