Polarized tops from new physics: signals and observables

Details Polarized tops from new physics: signals and observables Polarized tops from new physics: signals and observables

2008-11-04

arxiv.org/abs/0811.0569v2

Phys.Rev.D79:014032,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages, 4 .eps figures. v2: version accepted to PRD

Scientific paper

10.1103/PhysRevD.79.014032

Top quarks may be produced in large numbers in association with new physics at the LHC. The polarization of these top quarks probes the chiral structure of the new physics. We discuss several kinematic distributions which are sensitive to the polarization of single top quarks and can be used without full event reconstruction. For collimated tops we construct polarization-sensitive observables for both hadronic and leptonic decay modes and plot their distributions. We compute the observable polarization signals from top quarks produced in the on-shell cascade decay of a stop squark into a top quark and a neutralino, as well as top quarks produced in the analogous decay chain in same-spin partner models.

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