Chiral Couplings of W' and Top Quark Polarization at the LHC

Details Chiral Couplings of W' and Top Quark Polarization at the LHC Chiral Couplings of W' and Top Quark Polarization at the LHC

2010-08-20

arxiv.org/abs/1008.3508v2

Phys.Rev.D82:115020,2010

Physics

High Energy Physics

High Energy Physics - Phenomenology

35 pages, 12 Figures

Scientific paper

10.1103/PhysRevD.82.115020

If a TeV-scale charged gauge boson (W') is discovered at the Large Hadron Collider (LHC), it will become imperative to determine its chiral couplings to standard model (SM) fermions in order to learn about the underlying theory containing the W'. We describe the reconstruction of the t, b decay mode of the W' at the LHC, and identify various kinematic observables such as the angular distributions of the top quark and the lepton resulting from top decay that can be used to disentangle the chiral couplings of the W' to SM fermions. We demonstrate by presenting analytical expressions, numerical simulations, as well as intuitive illustrations for these observables at the LHC that among the SM fermions, the polarized top quark can most directly probe the chirality of such couplings.

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