QCD next-to-leading-order predictions matched to parton showers for vector-like quark models

Abstract

Vector-like quarks are featured by a wealth of beyond the Standard Model theories and are consequently an important goal of many LHC searches for new physics. Those searches, as well as most related phenomenological studies, however rely on predictions evaluated at the leading-order accuracy in QCD and consider well-defined simplified benchmark scenarios. Adopting an effective bottom-up approach, we compute next-to-leading-order predictions for vector-like-quark pair-production and single production in association with jets, with a weak or with a Higgs boson in a general new physics setup. We additionally compute vector-like-quark contributions to the production of a pair of Standard Model bosons at the same level of accuracy. For all processes under consideration, we focus both on total cross sections and on differential distributions, most these calculations being performed for the first time in our field. As a result, our work paves the way to precise extraction of experimental limits on vector-like quarks thanks to an accurate control of the shapes of the relevant observables and emphasize the extra handles that could be provided by novel vector-like-quark probes never envisaged so far

arXiv comment21 pages, 12 figures, 6 tables; model files available from http://feynrules.irmp.ucl.ac.be/wiki/NLOModels; version accepted by EPJC

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
• The anti-k_t jet clustering algorithm
• An Introduction to PYTHIA 8.2
• FastJet user manual
• FeynRules 2.0 - A complete toolbox for tree-level phenomenology
• Generating Feynman Diagrams and Amplitudes with FeynArts 3
• Matching NLO QCD computations and parton shower simulations
• LHAPDF6: parton density access in the LHC precision era
• UFO - The Universal FeynRules Output
• Precision Electroweak Measurements on the Z Resonance
• Three-jet cross sections to next-to-leading order
• -- HATHOR -- HAdronic Top and Heavy quarks crOss section calculatoR
• Automatic spin-entangled decays of heavy resonances in Monte Carlo simulations
• The Minimal Moose for a Little Higgs
• Light custodians in natural composite Higgs models
• Automation of one-loop QCD corrections
• Automation of next-to-leading order computations in QCD: the FKS subtraction
• Light Top Partners for a Light Composite Higgs
• On the Rational Terms of the one-loop amplitudes
• Automatic evaluation of UV and R2 terms for beyond the Standard Model Lagrangians: a proof-of-principle
• Model Independent Framework for Searches of Top Partners
• A comprehensive approach to new physics simulations
• Model-Independent Searches for New Quarks at the LHC
• Heavy Vector-like Top Partners at the LHC and flavour constraints
• Bounds and Decays of New Heavy Vector-like Top Partners
• The impact of PDF and alphas uncertainties on Higgs Production in gluon fusion at hadron colliders
• Atomic parity violation in cesium and implications for new physics
• Flavor signatures of isosinglet vector-like down quark model

Cited by in corpus (41)

• Search for single production of a vector-like T quark decaying to a Z boson and a top quark in proton-proton collisions at $\sqrt{s}=$13 TeV
• Next-to-leading-order predictions for single vector-like quark production at the LHC
• Search for single production of vector-like quarks decaying to a top quark and a W boson in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Single production of vector-like quarks with large width at the Large Hadron Collider
• Review of searches for vector-like quarks, vector-like leptons, and heavy neutral leptons in proton-proton collisions at $\sqrt{s}$ = 13 TeV at the CMS experiment
• Top-philic Vector-Like Portal to Scalar Dark Matter
• New sensitivity of current LHC measurements to vector-like quarks
• Automated simulations beyond the Standard Model: supersymmetry
• Novel Interpretation Strategy for Searches of Singly Produced Vector-like Quarks at the LHC
• Search for single production of the vector-like top partner at the 14 TeV LHC
• Phenomenology of unusual top partners in composite Higgs models
• Hunting for top partner with a new signature at the LHC
• Search for single production of a top quark partner via the $T\to th$ and $h\to W{W}^{\ast }$ channels at the LHC
• Probing vector-like quark models with Higgs-boson pair production
• The LHC potential of Vector-like quark doublets
• Single production of vector-like bottom quark at the LHeC
• Search for vector-like bottom quark via $Zb$ production at the LHC
• The quirk signal at FASER and FASER 2
• Search for pair production of the heavy vectorlike top partner in same-sign dilepton signature at the HL-LHC
• Single production of vectorlike $B$ quarks at the CLIC
• Search for singly produced vector-like top partners in multilepton final states with 139 ${\mathrm{fb}}^{-1}$ of $pp$ collision data at $\sqrt{s}=13$ TeV with the ATLAS detector
• Discovering Quirks through Timing at FASER and Future Forward Experiments at the LHC
• Vector-Like Top Quark Production via an Electroweak Dipole Moment at a Muon Collider
• Search for single production of vectorlike $B$-quarks at the LHC
• Search for charged Higgs bosons through vector-like top quark pair production at the LHC
• New signals for vector-like down-type quark in $U(1)$ of $E_6$
• Monojet Signatures from Heavy Colored Particles: Future Collider Sensitivities and Theoretical Uncertainties
• t-channel dark matter at the LHC -- a whitepaper
• Contact interactions and top-philic scalar dark matter
• Non-resonant Diagrams for Single Production of Top and Bottom Partners
• Single production of vectorlike quarks with charge 5/3 at the 14 TeV LHC
• Scalar leptoquark and vector-like quark extended models as the explanation of the muon $g-2$ anomaly: bottom partner chiral enhancement case
• Single Production of Vectorlike Y Quarks at the HL-LHC
• Quirk SUEP
• Combination of searches for singly produced vector-like top quarks in pp collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• NLO QCD corrections to single vector-like top partner production in association with top quark at the LHC
• Vector-like quarks decaying into singly and doubly charged bosons at LHC
• Multi-top signals of vectorlike quarks at the LHC
• Searching for single production of vectorlike quarks decaying into Wb at a future muon-proton collider
• UFO 2.0 -- The Universal Feynman Output format
• Vector-Like top quark production via a chromo-magnetic moment at the LHC