Dimension-six CP-violating operators of the third-family quarks and their effects at colliders

Details Dimension-six CP-violating operators of the third-family quarks and their effects at colliders Dimension-six CP-violating operators of the third-family quarks and their effects at colliders

1997-03-31

arxiv.org/abs/hep-ph/9703463v2

Phys.Rev. D56 (1997) 5907-5918

Physics

High Energy Physics

High Energy Physics - Phenomenology

24 pages, 2 figures added

Scientific paper

10.1103/PhysRevD.56.5907

We listed all possible dimension-six CP-violating $SU_c(3)\times SU_L(2)\times U_Y(1)$ invariant operators involving the third-family quarks, which can be generated by new physics at a higher energy scale. The expressions of these operators after electroweak symmetry breaking and the induced effective couplings $Wt\bar b$, $Xb\bar b$ and $Xt\bar t$ $(X=Z,\gamma,g,H)$ are also presented. We have evaluated sample contributions of these operators to CP-odd asymmetries of transverse polarization of top quark in single top production at the upgraded Tevatron, the similar effect in top-antitop pair production at the NLC, and the CP-odd observables of momentum correlations among the top quark decay products at the NLC. The energy and luminosity sensitivity in probing these CP-violating new physics has also been studied.

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