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Precision predictions for scalar leptoquark pair production at the LHC

Abstract : We present precision predictions for scalar leptoquark pair production at the LHC. Apart from QCD contributions, included are the lepton $t$-channel exchange diagrams relevant in the light of the recent $B$-flavour anomalies. All contributions are evaluated at next-to-leading order in QCD and improved by resummation, in the threshold regime, of the corrections from soft-gluon radiation at the next-to-next-to-leading-logarithmic accuracy. All corrections are found equally relevant. Furthermore, the impact of different sets of parton distribution functions is discussed. These predictions constitute the most precise leptoquark cross section calculations available to date and are necessary for the best exploitation of leptoquark LHC searches.
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https://hal.archives-ouvertes.fr/hal-03424314
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Submitted on : Wednesday, November 10, 2021 - 2:16:53 PM
Last modification on : Tuesday, November 16, 2021 - 5:25:20 AM

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Christoph Borschensky, Benjamin Fuks, Anna Kulesza, Daniel Schwartländer. Precision predictions for scalar leptoquark pair production at the LHC. European Physical Society Conference on High Energy Physics 2021, Jul 2021, Online, Germany. ⟨hal-03424314⟩

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