Four-Fermi Effective Operators at e^+ e^- ---> \bar{t} t

Details Four-Fermi Effective Operators at e^+ e^- ---> \bar{t} t Four-Fermi Effective Operators at e^+ e^- ---> \bar{t} t

1995-11-09

arxiv.org/abs/hep-ph/9511279v1

Acta Phys.Polon. B27 (1996) 921-932

Physics

High Energy Physics

High Energy Physics - Phenomenology

LaTex, 10 pages, 4 PostScript figures (uuencoded)

Scientific paper

The process of top quark pair production at Next Linear Collider (NLC) has been considered adopting an effective Lagrangian approach and including all operators of dim~6 which can be tree-level-generated within unknown underlying theory. All contributing helicity amplitudes are presented. It has been found that four-fermion operators can provide the leading non-standard contribution to the total cross section. Expected statistical significance of the non-standard signal for the total cross section and forward-backward asymmetry have been calculated taking into account existing experimental constraints. It has been shown that adopting realistic luminosity of NLC and conservative efficiency for the top-quark pair detection, the total cross section may be sensitive to non-standard physics of an energy scale around $\Lambda=5\tev$.

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