Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2003-07-10
Nucl.Phys. B675 (2003) 270-288
Physics
High Energy Physics
High Energy Physics - Phenomenology
Minor modifications in the text. Version accepted in Nucl. Phys. B
Scientific paper
10.1016/j.nuclphysb.2003.10.005
Higgs boson decays mediated by flavor changing neutral currents (FCNC) are very much suppressed in the Standard Model, at the level of 10^{-15} 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 a top quark in a general two-Higgs-doublet model (2HDM). The isolated top quark signature, unbalanced by any other heavy particle, should help to identify the potential FCNC events much more than any other final state. We compute the maximum branching ratios and the number of FCNC Higgs boson decay events at the LHC collider at CERN. The most favorable mode for production and subsequent FCNC decay is the lightest CP-even state in the Type II 2HDM, followed by the other CP-even state, if it is not very heavy, whereas the CP-odd mode can never be sufficiently enhanced. Our calculation shows that the branching ratios of the CP-even states may reach 10^{-5}, and that several hundred events could be collected in the highest luminosity runs of the LHC. We also point out some strategies to use these FCNC decays as a handle to discriminate between 2HDM and supersymmetric Higgs bosons.
Bejar Santi
Guasch Jaume
Sola Joan
No associations
LandOfFree
Higgs Boson Flavor-Changing Neutral Decays into Top Quark in a General Two-Higgs-Doublet Model does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Higgs Boson Flavor-Changing Neutral Decays into Top Quark in a General Two-Higgs-Doublet Model, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Higgs Boson Flavor-Changing Neutral Decays into Top Quark in a General Two-Higgs-Doublet Model will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-137620