Improved discovery of a nearly degenerate model: MUED using MT2 at the LHC

Understand

We study the discovery potential of the Minimal Universal Extra Dimension model (MUED) and improve it utilizing the multijet + lepton mode at the LHC.

• Since the MUED has a nearly degenerate spectrum, most events only have soft jets and small Emiss.
• The signature is challenging to search.
• We apply MT2 for the event selection and set the invisible particle mass of MT2 (test mass) to zero.