Measuring the Polarization of Boosted Hadronic Tops

Understand

We propose a new technique for measuring the polarization of hadronically decaying boosted top quarks.

• In particular, we apply a subjet-based technique to events where the decay products of the top are clustered within a single jet.
• The technique requires neither b-tagging nor W-reconstruction, and does not rely on assumptions about either the top production mechanism or the sources of missing energy in the event.
• We include results for various new physics scenarios made with different Monte Carlo generators to demonstrate the robustness of the technique.