Production and FCNC decay of supersymmetric Higgs bosons into heavy quarks in the LHC

Abstract

We analyze the production and subsequent decay of the neutral MSSM Higgs bosons (h = h^0, H^0, A^0) mediated by flavor changing neutral currents (FCNC) in the LHC collider. We have computed the h-production cross-section times the FCNC branching ratio, σ(pp -> h -> qq') = σ(pp -> h) B(h -> qq'), in the LHC focusing on the strongly-interacting FCNC sector. Here qq' is an electrically neutral pair of quarks of different flavors, the dominant modes being those containing a heavy quark: tc or bs. We determine the maximum production rates for each of these modes and identify the relevant regions of the MSSM parameter space, after taking into account the severe restrictions imposed by low energy FCNC processes. The analysis of σ(pp -> h -> qq') singles out regions of the MSSM parameter space different from those obtained by maximizing only the branching ratio, due to non-trivial correlations between the parameters that maximize/minimize each isolated factor. The production rates for the bs channel can be huge for a FCNC process (0.1-1 pb), but its detection can be problematic. The production rates for the tc channel are more modest (10^{-3}-10^{-2} pb), but its detection should be easier due to the clear-cut top quark signature. A few thousand tc events could be collected in the highest luminosity phase of the LHC, with no counterpart in the SM.

25 pages, 9 figures, 2 tables, LaTeX 2e. Typos corrected. Version to appear in JHEP

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Cited by in corpus (21)

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• Collider aspects of flavour physics at high Q
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• Top and Higgs Flavor Changing Neutral Couplings in two Higgs Doublets Model
• Enhancing $thj$ Production from Top-Higgs FCNC Couplings
• Single top-quark production by direct supersymmetric flavor-changing neutral-current interactions at the LHC
• Impact of squark generation mixing on the search for gluinos at LHC
• FCNCs in supersymmetric multi-Higgs doublet models
• Impact of squark generation mixing on the search for squarks decaying into fermions at LHC
• Single top-quark production by strong and electroweak supersymmetric flavor-changing interactions at the LHC
• FCNC-induced heavy-quark events at the LHC from Supersymmetry
• Searches for top-Higgs FCNC couplings via the Whj signal with $h\to \gamma \gamma$ at the LHC
• Study of anomalous top quark FCNC interactions via $tW$-channel of single top
• Effective Yukawa couplings and flavor-changing Higgs boson decays at linear colliders
• Flavor Changing Higgs Decays in Supersymmetry with Minimal Flavor Violation
• SUSY Higgs boson flavor-changing neutral currents at the LHC
• Higgs FCNC h -> t* c decay at the muon collider
• Flavor violating leptonic decays of the Higgs boson
• Phenomenological viability of orbifold models with three Higgs families
• Flavor changing neutral decay effects in models with two Higgs boson doublets: Applications to LHC Physics
• The single t-quark productions via the flavor-changing processes in the topcolor-assisted technicolor model at the hadron colliders