We analyze the maximum branching ratios for the Flavor Changing Neutral Current (FCNC) decays of the neutral Higgs bosons of the Minimal Supersymmetric Standard Model (MSSM) into bottom quarks, h → bs̄ (h = h 0,H0, A0). We consistently correlate these decays with the radiative B-meson decays (b → sγ). A full-fledged combined numerical analysis is performed of these high-energy and low-energy FCNC decay modes in the MSSM parameter space. Our calculation shows that the available data on B(b → sγ) severely restricts the allowed values of B(h → bs̄). While the latter could reach a few percent level in fine-tuned scenarios, the requirement of naturalness reduces these FCNC rates into the modest range B (h → bs̄) ∼ 10-4-10 -3. We find that the bulk of the MSSM contribution to B(h → bs̄) could originate from the strong supersymmetric sector. The maximum value of the FCNC rates obtained in this paper disagree significantly with recent (over-)estimates existing in the literature. Our results are still encouraging because they show that the FCNC modes h → bs̄ can be competitive with other Higgs boson signatures and could play a helpful complementary role to identify the supersymmetric Higgs bosons, particularly the lightest CP-even state in the critical LHC mass region mh0 ≃ 90-130 GeV. © SISSA/ISAS 2004.
|Journal||Journal of High Energy Physics|
|Publication status||Published - 1 Aug 2004|
- Higgs Physics
- Rare Decays
- Supersymmetry Phenomenology