Author:
Endo Motoi,Goto Toru,Kitahara Teppei,Mishima Satoshi,Ueda Daiki,Yamamoto Kei
Abstract
Abstract
In light of a discrepancy of the direct CP violation in K → ππ decays, ε
′
/ε
K
, we investigate gluino contributions to the electroweak penguin, where flavor violations are induced by squark trilinear couplings. Top-Yukawa contributions to ΔS = 2 observables are taken into account, and vacuum stability conditions are evaluated in detail. It is found that this scenario can explain the discrepancy of ε
′
/ε
K
for the squark mass smaller than 5.6 TeV. We also show that the gluino contributions can amplify
$$ \mathrm{\mathcal{B}}\left(K\to \pi \nu \overline{\nu}\right) $$
ℬ
K
→
π
ν
ν
¯
, ℬ(K
S
→ μ
+
μ
−)eff and ΔA
CP(b → sγ). Such large effects could be measured in future experiments.
Publisher
Springer Science and Business Media LLC
Subject
Nuclear and High Energy Physics
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