论文标题
重新评估厚皮诱导的电子EDM在三个循环中
Reevaluation of heavy-fermion-induced electron EDM at three loops
论文作者
论文摘要
受到电动偶极矩（EDM）的限制的限制，我们重新审视了将$ cp $违规从沉重的费米昂传播到光线的三环轻便机制。将其应用于由较重口味的EDM诱导的电子EDM，我们以$ m_e/m_μ$或$ m_e/m_e/m_τ$的订单找到其他贡献，这些贡献以前丢失了，结果使结果大1.4倍。因此，我们改善了Tau EDM的界限，并更新MUON EDM的间接限制以及魅力和底部夸克颜色EDM。
Motivated by improved limits on electric dipole moments (EDMs), we revisit the three-loop light-by-light mechanism that transmits $CP$ violation from a heavy fermion to a light one. Applying it to the electron EDM induced by EDMs of heavier flavors, we find additional contributions at the order $ m_e/m_μ$ or $m_e/m_τ$ that were missing before and that make the result 1.4 times larger. Consequently we improve bounds on the tau EDM, and update indirect limits on the muon EDM as well as charm and bottom quark color EDMs.
