Signals of CP Violation Beyond the MSSM in Higgs and Flavor Physics

We study an extension of the Higgs sector of the Minimal Supersymmetric Standard Model (MSSM), considering the effects of new degrees of freedom at the TeV scale, and allowing for sources of CP violation beyond the MSSM (BMSSM). We analyze the impact of the BMSSM sources of CP violation on the Higgs collider phenomenology and on low energy flavor and CP violating observables. We identify distinct Higgs collider signatures that cannot be realized, either in the case without CP violating phases or in the CP violating MSSM, and investigate the prospects to probe them at the Tevatron and the LHC. The most striking benchmark scenario has three neutral Higgs bosons that all decay dominantly into W boson pairs and that are well within the reach of the 7 TeV LHC run. On the other hand, we also present scenarios with three Higgs bosons that have masses MHi & 150 GeV and decay dominantly into bb̄. Such scenarios are much more challenging to probe and can even lie completely outside the reach of the 7 TeV LHC run. We explore complementary scenarios with standard MSSM Higgs signals that allow to accommodate a non-standard Bs mixing phase as indicated by D0, as well as the excess in Bs → µ+µ − candidates recently reported by CDF. We find that, in contrast to the MSSM, a minimal flavor violating soft sector is sufficient to generate significant corrections to CP violating observables in meson mixing, compatible with EDM constraints. In particular, a Bs mixing phase Sψφ. 0.15, can be achieved for specific regions of parameter space, compatible with all the presently available experimental constraints on flavor observables. Such a non-standard Bs mixing phase would unambiguously imply a sizable suppression of SψKS with respect to the SM prediction and a BR(Bs → µ+µ−) close to its 95 % C.L. upper bound of 1.1 × 10−8. ar X i