New 'Alternatives' with Randall-Sundrum Models

Thomas G. Rizzo
Stanford National Accelerator Lab [SLAC]
Wednesday, April 19, 2017
3:00 pm
FRH 4135

Abstract: The Randall-Sundrum framework provides a potential scenario in which both the gauge hierarchy and the fermion mass hierarchy problems can be addressed. Here we will show that the application of universal values of brane localized kinetic terms for all SM fields, as well as for the gravitons, combined with the judicious choices of the fermion localizations in the bulk, both in atypical parameter regimes, can be used to address both these problems while easily allowing gauge boson KK excitations with masses below ~1.5 TeV. We find that in this unusual parameter regime the gauge KK states approximately decouple from the usual SM fields allowing us to simultaneously avoid all the standard constraints arising from precision electroweak and flavor data as well as the usual dilepton and dijet resonance searches at the LHC without the application of any additional custodial symmetry. In addition to direct production of graviton KK resonances, this scenario can be probed by the pair production of gluon KK excitations leading to a final state with pairs of dijets.

Sheldon Campbell
Iftah Galon
Felix Kling
Sebastian Trojanowski