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Polarized Single Top Production at Leptonic Colliders from Broken R Parity Interactions Incorporating CP Violation

Marc Chemtob·Grégory Moreau
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Abstract

The contribution from the R parity violating interactions in the associated production of a top quark with a charm antiquark is examined for high energy leptonic colliders. We concentrate on the reactions associated with the semileptonic top decay. A set of characteristic dynamical distributions for the signal events is evaluated and the results contrasted against those from the standard model W-boson pair production background. Next, we turn to a study of a CP-odd observable, associated with the top spin, which leads to an asymmetry in the energy distribution of the emitted charged leptons for the pair of CP-conjugate final states, $b \bar l ν\bar c$ and $ \bar b l \bar νc $. A non vanishing asymmetry arises from a CP-odd phase, embedded in the R parity violating coupling constants, through interference terms between the R parity violating amplitudes at both the tree and loop levels.

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Marc Chemtob, Grégory Moreau. 2000-01-07. Polarized Single Top Production at Leptonic Colliders from Broken R Parity Interactions Incorporating CP Violation. https://doi.org/10.1103/physrevd.61.116004

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