July 29, 2019 to August 2, 2019
Northeastern University
US/Eastern timezone

Combined collider constraints on neutralinos and charginos with GAMBIT

Aug 1, 2019, 2:36 PM
Shillman 335 (Northeastern University)

Shillman 335

Northeastern University

Oral Presentation Beyond Standard Model Physics Beyond Standard Model


Dr Jonathan Cornell (University of Cincinnati)


Due to their small production cross sections, electroweakinos are difficult to directly search for at colliders. However, the LHC has reached sufficiently high integrated luminosity that the existence of electroweakinos at masses of hundreds of GeV can now be probed. In this talk I will present the results of a likelihood analysis of the electroweakino sector using the GAMBIT global fitting tool. Taking into account an array of 8 and 13 TeV ATLAS and CMS results, we have studied the viability of a portion of the MSSM parameter space where neutralinos and charginos are the only light sparticles. I will show that in this framework it is difficult to robustly exclude any range of neutralino or chargino masses, and furthermore there are consistent excesses in multiple LHC analyses which could be hinting at the existence of new physics.

Primary author

Dr Jonathan Cornell (University of Cincinnati)

Presentation materials