Speaker
Matthias Klaus Endres
(Rheinisch-Westfaelische Tech. Hoch. (DE))
Description
According to today's knowledge, the leptons belong to the fundamental constituents of matter. However, it is possible that a further, so far hidden, lepton substructure exists. In such a scenario it would be possible to excite leptons to a heavier state. Excited leptons could then decay under the radiation of a photon or a weak gauge boson.
The talk presents the search for single excited electrons and muons being produced in association with a lepton of the same flavour. For the first time at the LHC, not only the usual benchmark channels with two leptons and a photon in the final state are presented, but also the searches arising from Z-boson radiation are considered. The resulting 4-leptons and 2-leptons+jets signatures can efficiently be reconstructed with dedicated tools and allow to access and probe a much wider parameter space. The analyses are based on 20/fb of CMS data that were taken in 2012 at sqrt(s)=8 TeV.
Author
Matthias Klaus Endres
(Rheinisch-Westfaelische Tech. Hoch. (DE))