Jul 10 – 17, 2019
Europe/Brussels timezone

New Physics interpretations with GAMBIT

Jul 11, 2019, 12:00 PM
Campus Ledeganck - Aud. 1 (Ghent)

Campus Ledeganck - Aud. 1


Parallel talk Searches for New Physics Searches for New Physics


Peter Athron


I will present recent results from the Global and Modular
Beyond-the-Standard-Model Inference Tool (GAMBIT)
collaboration. Global fits with GAMBIT have been carried out on many
models including supersymmetric models, scalar singlet dark matter,
fermionic and vector Higgs portal dark matter and axions. In this
talk I will focus on our most recent study interpreting collider
constraints on electroweakinos (arXiv:1809.02097). First we show that
when the neutralinos and charginos are the only light states of the
MSSM, there are scenarios which evade LHC constraints for any mass of
the lightest neutralino and the lightest chargino, i.e. the profile
likelihood shows no constraint in this plane when one only considers
the possibility of excluding new physics. Intriguingly, in addition
we also find that excesses in the data can lead to closed contours,
indicating a preference for light neutralinos and charginos over the
standard model. We find the excess has a local significance of 3.3
sigma when combining ATLAS and CMS 13 TeV searches, which drops to
2.9 sigma when including 8 TeV searches as well

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