Impact of quark flavor violation on the decay $h^0(125GeV)\to c\bar{c}$ in the MSSM

Abstract

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 $\overline{\mathrm{DR}}$ 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 ${\tilde{c}}_{L,R}-{\tilde{t}}_{L,R}$ 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.

Comments: 4 pages, 2 figures, Proceedings of International Workshop on Higgs as a Probe of New Physics 2015 (HPNP2015), Toyama, Japan, 11-15, February, 2015 (to be published in eConf)