Probing the Radion-Higgs mixing at hadronic colliders

Details Probing the Radion-Higgs mixing at hadronic colliders Probing the Radion-Higgs mixing at hadronic colliders

2003-11-24

arxiv.org/abs/hep-ph/0311295v1

Phys.Rev. D69 (2004) 075011

Physics

High Energy Physics

High Energy Physics - Phenomenology

RevTeX style, 21 pages with 10 eps files

Scientific paper

10.1103/PhysRevD.69.075011

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.

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