SUSY Higgs boson flavor-changing neutral currents at the LHC
نویسندگان
چکیده
UAB-FT-597, UB-ECM-PF-06/03, hep-ph/0601191 We compute and analyze the Flavor-Changing Neutral Current (FCNC) interactions of Minimal Supersymmetric Standard Model Higgs bosons (h ≡ h, H, A) with heavy quarks (top and bottom), focusing on the strongly-interacting sector. We correlate the Higgs bosons production cross-section at the LHC with the FCNC decay branching ratios and find the maximum allowed values of the production rates, σ(pp → h → qq′) ≡ σ(pp → h) × B(h → qq′) (qq′ ≡ tc or bs) after taking into account limits from low energy data on flavor-changing interactions. We single out the top quark channel, with a maximum production rate of σ(pp → h → tc) ≃ 10 − 10 pb, as the most promising FCNC channel to be detected at the LHC.
منابع مشابه
Next-to-next-to-leading order soft and virtual corrections for QCD, Higgs and SUSY processes
I review recent advances in the calculation of higher-order soft-gluon corrections for a variety of QCD, Higgs, and SUSY processes in hadron colliders. A unified approach and master formulas for next-to-next-to-leading order soft and virtual corrections are discussed. I present some applications of the formalism to top quark pair production at the Tevatron and the LHC, top production via anomal...
متن کاملHiggs decay width in multiscalar doublet models
We show that there are regions of parameter space in multiscalar doublet models where, in the first few hundred inverse femtobarns of data, the new charged and neutral scalars are not directly observable at the LHC and yet the Higgs decay rate to b b is changed significantly from its standard model value. For a light Higgs with a mass less than 140 GeV, this can cause a large change in the numb...
متن کاملHiggs Boson Flavor-Changing Neutral Decays into Top Quark in a General Two-Higgs-Doublet Model
Higgs boson decays mediated by flavor changing neutral currents (FCNC) are very much suppressed in the Standard Model, at the level of 10 for Higgs boson masses of a few hundred GeV . Therefore, any experimental vestige of them would immediately call for new physics. In this paper we consider the FCNC decays of Higgs bosons into top quarks in a general two-Higgs-doublet model (2HDM). The isolat...
متن کاملFlavor changing effects on single charged Higgs boson production associated with a bottom - charm pair at CERN Large Hadron Collider ∗
We study flavor changing effects on the pp → bcH ± + X process at the Large Hadron Collider(LHC), which are inspired by the left-handed up-type squark mixings in the Minimal Supersymmetric Standard Model(MSSM). We find that the SUSY QCD radiative corrections to bcH ± coupling can significantly enhance the cross sections at the tree-level by a factor about 1.5 ∼ 5 with our choice of parameters. ...
متن کاملSoft Supersymmetry Breaking , Scalar Top - Charm Mixing and Higgs Signatures
The squark mass-matrix from the soft supersymmetry (SUSY) breaking sector contains a rich flavor-mixing structure that allows O(1) mixings among topand charm-squarks while being consistent with all the existing theoretical and experimental bounds. We formulate a minimal flavor-changing-neutral current scheme in which the squark mixings arise from the non-diagonal scalar trilinear interactions. ...
متن کامل