Electroweak corrections to the Charm-Top-Quark Contribution to ϵK

Journal of High Energy Physics

Regular Article - Theoretical Physics

Zachary Polonsky¹  Sandra Kvedaraitė¹  Joachim Brod¹  Ahmed Youssef¹ 

[1]Department of Physics, University of Cincinnati, 345 Clifton Ct, 45221, Cincinnati, OH, USA

关键词: CP Violation;    Electroweak Precision Physics;    Kaons;   

DOI  :  10.1007/JHEP12(2022)014

 received in 2022-08-25, accepted in 2022-11-21,  发布年份 2022

来源: Springer

【 摘 要 】

We calculate the leading-logarithmic and next-to-leading-logarithmic electroweak corrections to the charm-top-quark contribution to the effective |∆S| = 2 Lagrangian, relevant for the parameter ϵK. We find that these corrections lead to a −0.5% shift in the corresponding Wilson coefficient. Moreover, our calculation removes an implicit ambiguity in the standard-model prediction of ϵK, by fixing the renormalization scheme of the electroweak input parameters.

【 授权许可】

Unknown   
© The Author(s) 2022

【 图 表 】

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