Momentum Distributions in $t\bar t$

Details Momentum Distributions in $t\bar t$ Momentum Distributions in $t\bar t$

1993-04-27

arxiv.org/abs/hep-ph/9304304v1

Z. Phys. C59 (1993) 669

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages (without figures) (11 (sub)figures available on request), Karlsruhe preprint TTP93-11, hep-ph/yymmnnn

Scientific paper

We apply the Green function formalism for $t-\bar t$ production and decay near threshold in a study of the effects due to the momentum dependent width for such a system. We point out that these effects are likely to be much smaller than expected from the reduction of the available phase space. The Lippmann--Schwinger equation for the QCD chromostatic potential is solved numerically for $S$ partial wave. We compare the results on the total cross section, top quark intrinsic momentum distributions and on the energy spectra of $W$ bosons from top quark decays with those obtained for the constant width.

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