On the possibility of light string resonances at the LHC and Tevatron from Randall-Sundrum throats

Journal article

In string realizations of the Randall-Sundrum scenario, the higher-spin Regge excitations of Standard Model states localized near the IR brane are warped down to close to the TeV scale. We argue that, as a consequence of the localization properties of Randall-Sundrum models of flavour, the lightest such resonance is the spin-3/2 excitation, t R*, of the right-handed top quark over a significant region of parameter space. A mild accidental cancellation allows the t R* to be as light or lighter than the Kaluza-Klein excitations of the Standard Model states. We consider from a bottom-up effective theory point of view the production and possible observability of such a spin-3/2 excitation at the LHC and Tevatron. Current limits are weaker than might be expected because of the excess of WWjj events at the Tevatron reported by CDF at M inv ≃400-500 GeV. © SISSA 2009.

Authors: Hassanain, B; March-Russell, J; Rosa, J

• Publication status: Published
• Journal: Journal of High Energy Physics
• Volume: 2009
• Issue: 7
• Publication date: 2009-10-27
• DOI: 10.1088/1126-6708/2009/07/077
• EISSN: 1029-8479
• ISSN: 1126-6708