Parity Violating Asymmetries in Top Pair Production at Hadron Colliders

Details Parity Violating Asymmetries in Top Pair Production at Hadron Colliders Parity Violating Asymmetries in Top Pair Production at Hadron Colliders

1999-01-30

arxiv.org/abs/hep-ph/9902202v2

Phys.Rev. D61 (2000) 055009

Physics

High Energy Physics

High Energy Physics - Phenomenology

Version to appear in Physical Review D

Scientific paper

10.1103/PhysRevD.61.055009

We study loop-induced parity violating asymmetries in the strong production of polarized top quark pairs at $pp$ and $p \bar p$ colliders. The electroweak ${\cal O}(\alpha)$ corrections to the helicity amplitudes of $q \bar q \to t \bar t$ and $gg \to t \bar t$ are evaluated in a two Higgs doublet model (2HDM) and the minimal supersymmetric standard model (MSSM). While observables in top quark pair production receive little contribution from standard electroweak interactions, it is possible that they can be significantly enhanced in a 2HDM and the MSSM. We find that the one-loop MSSM electroweak corrections can generate parity violating asymmetries in the total production rate of left- and right-handed top quark pairs up to about 1.7% at the upgraded Tevatron ($\sqrt{S}=2$ TeV) and 3% at the LHC ($\sqrt{S}=14$ TeV).

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