Gluino-mediated electroweak penguin with flavor-violating trilinear couplings
| Title: | Gluino-mediated electroweak penguin with flavor-violating trilinear couplings |
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| Authors: | Endo, Motoi, Goto, Toru, Kitahara, Teppei, Mishima, Satoshi, Ueda, Daiki, Yamamoto, Kei |
| Source: | JHEP 1804 (2018) 019 |
| Publication Year: | 2017 |
| Collection: | High Energy Physics - Experiment High Energy Physics - Phenomenology |
| Subject Terms: | High Energy Physics - Phenomenology, High Energy Physics - Experiment |
| More Details: | In light of a discrepancy of the direct $CP$ violation in $K\to\pi\pi$ decays, $\varepsilon'/\varepsilon_K$, we investigate gluino contributions to the electroweak penguin, where flavor violations are induced by squark trilinear couplings. Top-Yukawa contributions to $\Delta S = 2$ observables are taken into account, and vacuum stability conditions are evaluated in detail. It is found that this scenario can explain the discrepancy of $\varepsilon'/\varepsilon_K$ for the squark mass smaller than 5.6 TeV. We also show that the gluino contributions can amplify $\mathcal{B}(K \to \pi \nu \overline{\nu})$, $\mathcal{B}(K_S \to \mu^+ \mu^-)_{\rm eff}$ and $\Delta A_{\rm CP}(b\to s\gamma)$. Such large effects could be measured in future experiments. Comment: 30 pages, 8 figures; references added, version published in JHEP |
| Document Type: | Working Paper |
| DOI: | 10.1007/JHEP04(2018)019 |
| Access URL: | http://arxiv.org/abs/1712.04959 |
| Accession Number: | edsarx.1712.04959 |
| Database: | arXiv |
| DOI: | 10.1007/JHEP04(2018)019 |
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