Polarization in Top Quark Production and Decay near Threshold

Details Polarization in Top Quark Production and Decay near Threshold Polarization in Top Quark Production and Decay near Threshold

1994-11-23

arxiv.org/abs/hep-ph/9411371v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages, LaTex (uses epsf.sty, 2 figures appended as uuencoded ps files). The complete paper, including figures, is also avail

Scientific paper

10.1063/1.48895

Theoretical results are presented for top quarks produced in annihilation of polarized electrons on positrons. Polarization studies for $t\bar t$ pairs near threshold are free from hadronization ambiguities. This is due to the short lifetime of the top quark. Semileptonic decays are discussed as well as their applications in studying polarization dependent processes involving top quarks. The Green function formalism is applied to $t\bar t$ production at future $e^+e^-$ colliders with polarized beams. Lippmann--Schwinger equation is solved numerically for the QCD chromostatic potential given by the two-loop formula at large momentum transfers and Richardson ansatz at intermediate and small ones. The polarization dependent momentum distributions of top quarks and their decay products are calculated.

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