Probing the Radion-Higgs mixing at hadronic colliders

Abstract

In the Randall-Sundrum model, the radion-Higgs mixing is weakly suppressed by the effective electroweak scale. One of its novel features would be a sizable three-point vertex of KK graviton-Higgs-radion. We explored the potential of the Fermilab Tevatron and the CERN LHC in probing the radion-Higgs mixing via the associated production of the radion with the Higgs boson. The observation of the rare decay of the KK gravitons into a Higgs and a radion is then the direct and exclusive signal of the radion-Higgs mixing. We also studied all the partial decay widths of the KK gravitons in the presence of the radion-Higgs mixing, and found that if the mixing parameter is of order one, the decay rate into a radion and a Higgs boson becomes as large as that into a Higgs boson pair, with the branching ratio of order 0.001.

RevTeX style, 21 pages with 10 eps files

References in corpus (6)

• Search for the Standard Model Higgs Boson at LEP
• MadEvent: Automatic Event Generation with MadGraph
• The scalar sector of the Randall-Sundrum model
• Shifts in the Properties of the Higgs Boson from Radion Mixing
• Top quark Kaluza-Klein mode mixing in the Randall-Sundrum bulk Standard Model and B -> X_s gamma
• A probe of the Radion-Higgs mixing in the Randall-Sundrum model at e^+ e^- colliders

Cited by in corpus (5)

• Complex Singlet Extension of the Standard Model
• Exact identification of the radion and its coupling to the observable sector
• Dilaton Interactions and the Anomalous Breaking of Scale Invariance of the Standard Model
• Probing the radion-Higgs mixing at photon colliders
• Photoproduction of mixed radions at a proton-proton collider