Single-top-quark production in the $t$-channel at NNLO

Abstract

We present a calculation of t-channel single-top-quark production and decay in the five-flavor scheme at NNLO. Our results resolve a disagreement between two previous calculations of this process that found a difference in the inclusive cross section at the level of the NNLO coefficient itself. We compare in detail with the previous calculations at the inclusive, differential and fiducial level including b-quark tagging at a fixed scale $\mu =m_t$. In addition, we advocate the use of double deep inelastic scattering (DDIS) scales (${\mu }^2=Q^2$ for the light-quark line and ${\mu }^2=Q^2+m_t^2$ for the heavy-quark line) that maximize perturbative stability and allow for robust scale uncertainties. All NNLO and NLO$\otimes$NLO contributions for production and decay are included in the on-shell and vertex-function approximation. We present fiducial and differential results for a variety of observables used in Standard Model and Beyond Standard Model analyses, and find an important difference between the NLO and NNLO predictions of exclusive $t+n$-jet cross sections. Overall we find that NNLO corrections are crucial for a precise identification of the t-channel process.

40 pages, 22 figures, JHEP published version

References in corpus (17)

• Parton distributions for the LHC
• MCFM for the Tevatron and the LHC
• HATHOR for single top-quark production: Updated predictions and uncertainty estimates for single top-quark production in hadronic collisions
• Assault on the NLO Wishlist: pp -> tt bb
• On the NNLO QCD corrections to single-top production at the LHC
• Next-to-leading-order predictions for t-channel single-top production at hadron colliders
• The Quark Beam Function at NNLL
• The N-jettiness soft function at next-to-next-to-leading order
• The Soft Function for Exclusive N-Jet Production at Hadron Colliders
• Fermionic Corrections to the Heavy-Quark Pair Production in the Quark-Antiquark Channel
• NNLO corrections to inclusive semileptonic B decays in the shape-function region
• Single top quark production and decay in the t-channel at next-to-leading order at the LHC
• NNLO corrections to B --> X_u l nu in the shape-function region
• New directions for top quark polarization in the $t$-channel process
• Off-shell effects for t-channel and s-channel single-top production at NLO in QCD
• Calculation of two-loop QCD corrections for hadronic single top-quark production in the t channel
• Off-shell single-top-quark production in the Standard Model Effective Field Theory

Cited by in corpus (37)

• 50 Years of Quantum Chromodynamics
• Event Generators for High-Energy Physics Experiments
• Les Houches 2021: Physics at TeV Colliders: Report on the Standard Model Precision Wishlist
• Measurements of $WH$ and $ZH$ production with Higgs boson decays into bottom quarks and direct constraints on the charm Yukawa coupling in $13\mathrm{TeV}$ $pp$ collisions with the ATLAS detector
• First measurement of the top quark pair production cross section in proton-proton collisions at $\sqrt{s}$ = 13.6 TeV
• Non-factorisable contribution to $t$-channel single-top production
• Stairway to discovery: a report on the CMS programme of cross section measurements from millibarns to femtobarns
• Non-local slicing approaches for NNLO QCD in MCFM
• NNLO PDFs driven by top-quark data
• Review of top quark mass measurements in CMS
• Search for exotic decays of the Higgs boson to a pair of pseudoscalars in the $\mu \mu$bb and $\tau \tau$bb final states
• Les Houches 2023 -- Physics at TeV Colliders: Report on the Standard Model Precision Wishlist
• Measurement of $t$-channel production of single top quarks and antiquarks in $pp$ collisions at 13 TeV using the full ATLAS Run 2 data sample
• Climbing to the Top of the ATLAS 13 TeV data
• Search for pair production of squarks or gluinos decaying via sleptons or weak bosons in final states with two same-sign or three leptons with the ATLAS detector
• Complete two-loop QCD amplitudes for $tW$ production at hadron colliders
• Measurement of the inclusive $\mathrm{t}\bar{\mathrm{t}}$ cross section in final states with at least one lepton and additional jets with 302 pb${}^{-1}$ of pp collisions at $\sqrt{s}$ = 5.02 TeV
• Linear power corrections to single top production and decay at the LHC in the narrow width approximation
• Top-philic Machine Learning
• Combination of searches for singly produced vector-like top quarks in pp collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Search for scalar leptoquarks produced via $\tau$-lepton-quark scattering in pp collisions at $\sqrt{s}$ = 13 TeV
• Single-top quark physics at the LHC: from precision measurements to rare processes and top quark properties
• Subtraction of the $t\bar{t}$ contribution in $tW\bar{b}$ production at the one-loop level
• Search for heavy neutral leptons in decays of W bosons produced in 13 TeV pp collisions using prompt signatures in the ATLAS detector
• Measurement of the top-quark Yukawa coupling from $t\overline{t}$ production in the lepton+jets final state using $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Measurements of the inclusive W and Z boson production cross sections and their ratios in proton-proton collisions at $\sqrt{s}$ = 13.6 TeV
• Integral of the double-emission eikonal function for a massive and a massless emitter at an arbitrary angle
• Evaluating master integrals in non-factorizable corrections to $t$-channel single-top production at NNLO QCD
• Top-Quark Decay at Next-to-Next-to-Next-to-Leading Order in QCD
• A method for correcting the substructure of multiprong jets using the Lund jet plane
• NNLO soft function for threshold single inclusive jet production
• Measurement of the $t$-channel single top-quark production cross section at $\sqrt{s}=13$ TeV with the ATLAS detector and interpretations of the measurement
• Inclusive top cross sections in ATLAS
• Measurement of differential $t$-channel single top (anti)quark production cross-sections at 13 TeV with the ATLAS detector
• Search for charged-lepton flavour violation in top quark interactions with an up-type quark, a muon, and a $\tau$ lepton in proton-proton collisions at $\sqrt{s}$ = 13 TeV
• Probing $t$-channel single top-quark and antiquark production via differential cross-section measurements at $\sqrt{s}=$\SI{13}{\TeV} with the ATLAS detector
• Approximate N${}^2$LO and N${}^3$LO QCD Predictions for $tW$ Production