Hunting Radions at Linear Colliders

Abstract

We investigate the possibility to disentangle the radions in the Randall-Sundrum scenario from higgs boson at the next generation high energy $e^{+}{e}^{-}$ linear colliders. Due to trace anomaly, the radion coupling (and in turn the branching ratio) to gluons is enhanced over the same for the Standard Model (SM) higgs. We study the radion production at electron-positron colliders, via the fusion of W-bosons in association with neutrinos, and propose to investigate radion decay to a pair of gluons. At 500 GeV center of mass energy, our signal is not very promising. We find our results are encouraging for finding radion and differentiating it from higgs for center of mass energies of 1 TeV and above.

One new figure and discussion added, version to appear in Phys. lett. B

References in corpus (7)

• Radion and Higgs mixing at the LHC
• Radion effects on unitarity in gauge-boson scattering
• Radions in a $\gamma \gamma$ collider
• $\rho$ parameter constraints on radion phenomenology and a lower bound on Higgs mass
• Unitarity constraints on the stabilized Randall-Sundrum scenario
• Two loop radion correction to $K_L$ - $K_S$ mass difference in the stabilised Randall-Sundrum brane world scenario
• Testable $(g-2{)}_{\mu }$ contribution due to a light stabilized radion in the Randall-Sundrum model

Cited by in corpus (8)

• Exact identification of the radion and its coupling to the observable sector
• Invisible Higgs in theories of large extra dimensions
• On Distinguishing Radions From Higgs Bosons
• Mixed Higgs-Radion States at the LHC -- a Detailed Study
• Radion Flavor Violation in Warped Extra Dimension
• Indian Contributions to LHC Theory
• Radion-Higgs Mixing in 2HDMs
• Is the radion a bulk Higgs doublet?