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

Particle Physics Theory seminar

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

  • Event time: 2:00pm
  • Event date: 1st September 2010
  • Speaker: Joao Rosa ( Oxford/Edinburgh)
  • Location: Lecture Theatre B,

Event details

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 of the right-handed top quark over a significant region of parameter space. A mild accidental cancellation allows this state to be as light or even lighter than the Kaluza-Klein excitations of the Standard Model fermions. 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 mild excess of WWjj events at the Tevatron recently reported by CDF.

The Particle Physics Theory seminar is a weekly series of talks reflecting the diverse interests of the group. Topics include analytic and numerical calculations based on the Standard Model of elementary particle physics, theories exploring new physics, as well as more formal developments in gauge theories and gravity..

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