Speaker
Description
We discuss the possibility that light new physics in the top quark sample at the LHC can be found by investigating with greater care well known kinematic distributions, such as the invariant mass mbℓ of the b-jet and the charged lepton in fully leptonic t ̄t events. We demonstrate that new physics can be probed in the rising part of the already measured mbℓ distribution. To this end we analyze a concrete supersymmetric scenario with light right-handed stop quark, chargino and neutralino. The corresponding spectra are characterized by small mass differences, which make them not yet excluded by current LHC searches and give rise to a specific end-point in the shape of the mbℓ distribution. We argue that this sharp feature is general for models of light new physics that have so far escaped the LHC searches and can offer a precious handle for the implementation of robust searches that exploit, rather than suffer from, soft bottom quarks and leptons.
| Alternate track | 03. Beyond the Standard Model |
|---|---|
| I read the instructions above | Yes |
