2010

Low-scale warped extra dimension and its predilection for multiple top quarks

Jung, Sunghoon, Wells, James D.

Understand

Within warped extra dimension models that explain flavor through geometry, flavor changing neutral current constraints generally force the Kaluza-Klein scale to be above many TeV.

This creates tension with a natural electroweak scale.
On the other hand, a much lower scale compatible with precision electroweak and flavor changing neutral current constraints is allowed if we decouple the Kaluza-Klein states of Standard Model gauge bosons from light fermions $c_{\rm light}\simeq c_b\simeq 0.5$ bulk mass parameters).
The main signature for this approach is four top quark production via the Kaluza-Klein excitations' strong coupling to top quarks.

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