Isospin-violating contributions to ∈/∈

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Isospin-violating contributions to ∈/∈. / Cirigliano, V.; Gisbert, H.; Pich, A.; Rodríguez-Sánchez, A.

I: Journal of High Energy Physics, Vol. 2020, Nr. 2, 32, 01.02.2020.

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

Harvard

Cirigliano, V, Gisbert, H, Pich, A & Rodríguez-Sánchez, A 2020, 'Isospin-violating contributions to ∈/∈', Journal of High Energy Physics, vol. 2020, nr. 2, 32. https://doi.org/10.1007/JHEP02(2020)032

APA

Cirigliano, V., Gisbert, H., Pich, A., & Rodríguez-Sánchez, A. (2020). Isospin-violating contributions to ∈/∈. Journal of High Energy Physics, 2020(2), [32]. https://doi.org/10.1007/JHEP02(2020)032

CBE

Cirigliano V, Gisbert H, Pich A, Rodríguez-Sánchez A. 2020. Isospin-violating contributions to ∈/∈. Journal of High Energy Physics. 2020(2):Article 32. https://doi.org/10.1007/JHEP02(2020)032

MLA

Vancouver

Cirigliano V, Gisbert H, Pich A, Rodríguez-Sánchez A. Isospin-violating contributions to ∈/∈. Journal of High Energy Physics. 2020 feb 1;2020(2). 32. https://doi.org/10.1007/JHEP02(2020)032

Author

Cirigliano, V. ; Gisbert, H. ; Pich, A. ; Rodríguez-Sánchez, A. / Isospin-violating contributions to ∈/∈. I: Journal of High Energy Physics. 2020 ; Vol. 2020, Nr. 2.

RIS

TY - JOUR

T1 - Isospin-violating contributions to ∈′/∈

AU - Cirigliano, V.

AU - Gisbert, H.

AU - Pich, A.

AU - Rodríguez-Sánchez, A.

PY - 2020/2/1

Y1 - 2020/2/1

N2 - The known isospin-breaking contributions to the K → ππ 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 ∈′/∈, where these corrections play a quite significant role. We obtain the Standard Model prediction Re (∈′/∈) = (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/NC-suppressed contributions to some relevant chiral-perturbation-theory low-energy constants.

AB - The known isospin-breaking contributions to the K → ππ 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 ∈′/∈, where these corrections play a quite significant role. We obtain the Standard Model prediction Re (∈′/∈) = (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/NC-suppressed contributions to some relevant chiral-perturbation-theory low-energy constants.

KW - Chiral Lagrangians

KW - CP violation

KW - Effective Field Theories

KW - Kaon Physics

U2 - 10.1007/JHEP02(2020)032

DO - 10.1007/JHEP02(2020)032

M3 - Article

AN - SCOPUS:85079421177

VL - 2020

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

SN - 1029-8479

IS - 2

M1 - 32

ER -