A probe of the Radion-Higgs mixing in the Randall-Sundrum model at e^+ e^- colliders

Abstract

In the Randall-Sundrum model, the radion-Higgs mixing is weakly suppressed by the effective electroweak scale. A novel feature of the existence of gravity-scalar mixing would be a sizable three-point vertex among the KK graviton, Higgs and radion. We study this vertex in the process e^+ e^- -> h phi, which is allowed only with a non-zero radion-Higgs mixing. It is shown that the angular distribution is a unique characteristic of the exchange of massive spin-2 gravitons, and the total cross section at the future e^+ e^- collider is big enough to cover a large portion of the parameter space where the LEP/LEP II data cannot constrain.

14pages, RevTeX, 5 figures

References in corpus (1)

• The scalar sector of the Randall-Sundrum model

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• The effect of the curvature-scalar mixing on the annihilation cross sections of dark matter scalar and unparticle dark matter
• Lepton flavor violating radion decays in the Randall-Sundrum scenario