# LCWS06 (Linear Collider Workshop 2006)

8-13 March 2006
Indian Institute of Science
Europe/Zurich timezone
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# Probing Universal Extra Dimensions through KK leptons at the ILC

Presented by Dr. Gautam BHATTACHARYYA on 12 Mar 2006 from 09:25 to 09:50
Type: Oral
Track: New Physics at TeV Scale & Electroweak Precision Test

## content

In the context of an universal extra-dimensional scenario, we consider production of the first Kaluza-Klein electron positron pair in an $e^+e^-$ collider as a case-study for the future International Linear Collider. The Kaluza-Klein electron decays into a nearly degenerate Kaluza-Klein photon and a standard electron, the former carrying away missing energy. The Kaluza-Klein electron and photon states are heavy with their masses around the inverse radius of compactification, and their splitting is controlled by radiative corrections originating from bulk and brane-localised interactions. We look for the signal event $e^+e^- +$ large missing energy for $\sqrt s = 1$ TeV and observe that with a few hundred fb$^{-1}$ luminosity the signal will be readily detectable over the standard model background. We comment on how this signal may be distinguished from similar events from other new physics.

## Place

Location: Indian Institute of Science