Abstract
A new method, recently introduced for the lattice calculation of electromagnetic and isospin corrections to weak decays [1], is discussed. Using this method, for the first time, the electromagnetic effects in the leptonic decay rates and have been evaluated in lattice QCD. Preliminary results for the electromagnetic corrections to charged (neutral) pion and kaon masses and leptonic decay rates are presented.
Highlights
In Flavor Physics an accurate determination of the parameters of the Cabibbo-KobayashiMaskawa (CKM) matrix represents a crucial test of the Standard Model (SM)
Improving the accuracy on the CKM parameters is at the heart of many searches for New Physics (NP), where we look for rather small effects
The Unitarity Triangle (UT) analysis, for example, allows a rather precise determination of the Wolfenstein parameters ρand η, obtained from a plethora of flavour measurements. This analysis has been performed by several groups, among which the UTfit collaboration, see for example http://www.utfit.org
Summary
Journal of Physics: Conference Series 755 (2016) 011001 doi:10.1088/1742-6596/755/1/011001.
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