# EPS HEP 2015

22-29 July 2015
Europe/Vienna timezone

## $h^0(125GeV) \to c \bar{c}$ as a test case for quark flavor violation in the MSSM

Jul 23, 2015, 5:15 PM
12m
Großer Festsaal

### Großer Festsaal

talk Higgs and New Physics

### Speaker

Keisho Hidaka (Tokyo Gakugei University)

### Description

We compute the decay width of $h^0 \to c \bar{c}$ in the MSSM with quark flavor violation (QFV) at full one-loop level in the $\overline{\rm DR}$ renormalization scheme. We study the effects of $\tilde{c}-\tilde{t}$ mixing, taking into account the constraints on QFV from the B meson data. We find that the full one-loop corrected decay width $\Gamma(h^0 \to c \bar{c})$ is very sensitive to the MSSM QFV parameters. In a scenario with large $\tilde{c}-\tilde{t}$ mixing, $\Gamma(h^0 \to c \bar{c})$ can differ up to $\sim \pm 35\%$ from its SM value. After estimating the uncertainties of the width, we conclude that an observation of these QFV SUSY effects is possible at a future $e^+ e^-$ collider such as ILC. (Published in Phys. Rev. D91 (2015) 015007 [arXiv:1411.2840 [hep-ph]])

### Primary author

Keisho Hidaka (Tokyo Gakugei University)

### Co-authors

Prof. Alfred Bartl (University of Vienna) Dr Elena Ginina (HEPHY, Vienna) Dr Helmut Eberl (HEPHY, Vienna) Prof. Walter Majerotto (HEPHY, Vienna)