Measuring the Polarization of Boosted Hadronic Tops

Details Measuring the Polarization of Boosted Hadronic Tops Measuring the Polarization of Boosted Hadronic Tops

2009-09-22

arxiv.org/abs/0909.3855v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

v2: version accepted for publication in JHEP

Scientific paper

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.

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