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Probing nonstandard top-quark couplings using spin correlation
Journal article   Open access

Probing nonstandard top-quark couplings using spin correlation

Kingman Cheung
Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol.55(7), pp.4430-4434
01/04/1997

Abstract

Top spin correlation has been shown to be nontrivial in hadronic top-quark pair production, and can be realized by the asymmetries of the decay products of the top quark and antiquark. We show in this work that the top spin correlation is a sensitive probe to the anomalous top-quark couplings beyond the standard model. Specifically, we look at the anomalous chromomagnetic and chromoelectric dipole moments, as well as a right-handed component in the weak decay of the top quark. We find a few measurable asymmetries formed by the decay products of the top-quark pair that vary in accord with the spin correlation.
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