@Article{Cirigliano_etal2020, author="Cirigliano, V. and Gisbert, H. and Pich, A. and Rodriguez-Sanchez, A.", title="Isospin-violating contributions to epsilon {\textquoteright}/epsilon", journal="Journal of High Energy Physics", year="2020", publisher="Springer", volume="02", number="2", pages="032--44pp", optkeywords="Chiral Lagrangians; CP violation; Effective Field Theories; Kaon Physics", abstract="The known isospin-breaking contributions to the K -> pi pi amplitudes are reanalyzed, taking into account our current understanding of the quark masses and the relevant non-perturbative inputs. We present a complete numerical reappraisal of the direct CP-violating ratio is an element of({\textquoteright})/is an element of, where these corrections play a quite significant role. We obtain the Standard Model prediction Re (is an element of({\textquoteright})/is an element of) = (14 +/- 5) 10(-4), which is in very good agreement with the measured ratio. The uncertainty, which has been estimated conservatively, is dominated by our current ignorance about 1/N-C-suppressed contributions to some relevant chiral-perturbation-theory low-energy constants.", optnote="WOS:000515816800001", optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=4304), last updated on Wed, 11 Mar 2020 08:48:13 +0000", issn="1029-8479", doi="10.1007/JHEP02(2020)032", opturl="https://arxiv.org/abs/1911.01359", opturl="https://doi.org/10.1007/JHEP02(2020)032", language="English" }