Event

The discovery of the stop — the Supersymmetric partner of the top quark — is a key goal of the ATLAS physics program enabled by the Large Hadron Collider. I will review the status of the search for direct stop pair production, focusing on stop decays via a hadronically decaying top quark and the lightest Supersymmetric particle (a compelling dark matter candidate). I will also discuss recent developments in the natural "stealth stop" regime, where the stop is nearly degenerate with the top quark, which is characterized by decay kinematics that force the final state top quark off its mass shell. Our recast of the ATLAS top mass measurements revealed that stop decays in this regime could contaminate the measurement of the top mass by up to 2 GeV. Thus, a robust statement on the exclusion of a stealth stop requires the simultaneous consideration of the impact on the top mass.

The link to join the Zoom Meeting is here

https://upenn.zoom.us/j/93289218994?pwd=TEtqYUNtYzlRTTFpTE1rZGUyd0c4QT09

You will be admitted from the waiting room.