Differential distributions for Single Top Quark Production at the LHeC

Abstract

We present a phenomenological study of the single top (anti-)quark production with leptonic decays at the Large Hadron electron Collider (LHeC) at the next-to-leading-order (NLO) in QCD. We focus on various differential distributions in a fiducial region. The NLO corrections can reduce the fiducial cross section by 14%. We find the NLO predictions exhibit strong stability under scale variations for most observables considered while the scale variations at the leading-order (LO) dominated in the theoretical uncertainties. We propose a method of determining the top-quark mass using the measurement of the average transverse momentum of the charged lepton. The scale variations at the NLO induce a theoretical uncertainty of about 1.3 GeV of the extracted top-quark mass. The statistical error of the extracted top-quark mass amounts to 1.1 GeV. We also investigate the impact of the QCD corrections and the scale variations in searches of the anomalous Wtb couplings.

13 pages, 12 figures, 8 tables; Published version

References in corpus (28)

• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• LHAPDF6: parton density access in the LHC precision era
• Parton distributions in the LHC era: MMHT 2014 PDFs
• MadAnalysis 5, a user-friendly framework for collider phenomenology
• Next-to-next-to-leading-order collinear and soft gluon corrections for t-channel single top quark production
• HATHOR for single top-quark production: Updated predictions and uncertainty estimates for single top-quark production in hadronic collisions
• GoSam-2.0: a tool for automated one-loop calculations within the Standard Model and beyond
• Next-to-leading-order predictions for t-channel single-top production at hadron colliders
• On the NNLO QCD corrections to single-top production at the LHC
• Effective four-fermion operators in top physics: a roadmap
• Next-to-leading order QCD corrections to the top quark decay via model-independent FCNC couplings
• Single top quark production and decay in the t-channel at next-to-leading order at the LHC
• Single-top-quark production in the $t$-channel at NNLO
• Off-shell effects for t-channel and s-channel single-top production at NLO in QCD
• Soft anomalous dimensions for single-top production at three loops
• Constraints on flavor-changing neutral-current $Htq$ couplings from the signal of $tH$ associated production with QCD next-to-leading order accuracy at the LHC
• Determination of the top-quark mass from hadro-production of single top-quarks
• Anomalous Top Couplings at Hadron Colliders Revisited
• Calculation of two-loop QCD corrections for hadronic single top-quark production in the t channel
• Searching for the doubly-charged Higgs bosons in the Georgi-Machacek model at the electron-proton colliders
• Off-shell single-top-quark production in the Standard Model Effective Field Theory
• Next-to-leading order QCD corrections to Higgs production at a future lepton-proton collider
• Resummation prediction on top quark transverse momentum distribution at large pT
• Single Production of Fourth Family $t^{\prime }$ Quarks at LHeC
• Single production of vector-like top partner decaying to $Wb$ in the leptonic channel at $ep$ colliders in the LHT model
• Exploring CP-even scalars of a Two Higgs-doublet model in future $e^{-}p$ colliders
• Studies of nonresonant Higgs pair production at electron-proton colliders
• Searching for top quark pair production cross section at LHeC and FCC-eh

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