On the top-quark polarization and how to measure it

Abstract

The top quark is expected to decay as a free particle with definite momentum and polarization. Here we consider the possibilities to obtain information about its polarization through the energy and angular distributions of the b-quarks from the decay of the top-quarks produced in $e^{+}{e}^{-}$ annihilation. Analytic expressions and numerical estimates for different beam polarizations are derived.

9 pages, LaTex, 3 ps.figures

Cited by in corpus (8)

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• CP violation in e+e- -> t tbar: Energy Asymmetries and Optimal Observables of b and bbar Quarks
• CP violating asymmetries of b quarks and leptons in e^+e^- \to t\bar t and supersymmetry (review)
• Two-particle kinematic distributions from new physics at an electron-positron collider with polarized beams
• Decay-lepton angular distributions in e+e- -> t tbar to O(alpha_s) in the soft-gluon approximation
• Energy and angular distributions of the bottom quark in the electron-positron annihilation $e^{+}{e}^{-}\to b{W}^{+}\bar{t}$
• QCD corrections to decay-lepton polar and azimuthal angular distributions in e+e- -> t tbar in the soft-gluon approximation