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Forward-backward asymmetry of top quark in diquark models

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arxiv 0911.4875 v3 pith:7WGVCKGS submitted 2009-11-25 hep-ph hep-ex

Abdesslam Arhrib , Rachid Benbrik , Chuan-Hung Chen This is my paper · ORCID
classification hep-phhep-ex
keywords diquarkmodelsasymmetryforward-backwardpairproductionquarktop-quark
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abstract

Motivated by the recent unexpected large forward-backward asymmetry (FBA) of the top quark observed by D$\O$ and CDF at the Tevatron, we investigate a possible explanation for the anomaly within the framework of diquark models. Unlike other mechanisms induced by s-channel or t-channel, the top-quark pair production in the diquark models is dictated by the u-channel diagram. We find that the color-triplet diquark can generate the FBA of 20% when the constraint from the cross section of the top-quark pair production is taken into account.

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  1. Unveiling E$_6$SSM Scalar Diquarks at the HL-LHC

    hep-ph 2024-12 conditional novelty 5.0 of 10

    A detector-level Monte Carlo study finds that pair-produced E6SSM scalar diquarks decaying to top-bottom pairs could be observed with >3 sigma statistical significance at the HL-LHC for masses up to 900 GeV.

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