Model-Independent Production of a Top-Philic Resonance at the LHC

Abstract

We investigate the collider phenomenology of a color-singlet vector resonance, which couples to the heaviest quarks, the top quarks, but very weakly to the rest of the fermions in the Standard Model. We find that the dominant production of such a resonance does not appear at the tree level -- it rather occurs at the one-loop level in association with an extra jet. Signatures like t anti-t plus jets readily emerge as a result of the subsequent decay of the resonance into a pair of top quarks. Without the additional jet, the resonance can still be produced off-shell, which gives a sizeable contribution at low masses. The lower top quark multiplicity of the loop induced resonance production facilitates its reconstruction as compared to the tree level production that gives rise to more exotic signatures involving three or even four top quarks in the final state. For all these cases, we discuss the constraints on the resonance production stemming from recent experimental measurements in the top quark sector. We find that the top-philic vector resonance remains largely unconstrained for the majority of the parameter space, although this will be scrutinized closely in the Run 2 phase of the LHC.

32 pages, 16 figures

References in corpus (23)

• Reducing full one-loop amplitudes to scalar integrals at the integrand level
• OneLOop: for the evaluation of one-loop scalar functions
• GoSam-2.0: a tool for automated one-loop calculations within the Standard Model and beyond
• On the Rational Terms of the one-loop amplitudes
• NLO QCD corrections to t tbar + jet production at hadron colliders
• The Bulk RS KK-gluon at the LHC
• Searching for the Kaluza-Klein Graviton in Bulk RS Models
• Hadronic top-quark pair production in association with a hard jet at next-to-leading order QCD: Phenomenological studies for the Tevatron and the LHC
• Measurement of the t t-bar production cross section in the dilepton channel in pp collisions at sqrt(s) = 7 TeV
• Top Compositeness at the Tevatron and LHC
• Massive color-octet bosons and pairs of resonances at hadron colliders
• Constraining BSM Physics at the LHC: Four top final states with NLO accuracy in perturbative QCD
• Manifestations of Top Compositeness at Colliders
• Tensorial Reconstruction at the Integrand Level
• Optimizing the Reduction of One-Loop Amplitudes
• spinney: A Form Library for Helicity Spinors
• Kaluza-Klein Gluons as a Diagnostic of Warped Models
• Color Sextet Scalars at the CERN Large Hadron Collider
• Measurement of the $t\bar{t}$ production cross-section as a function of jet multiplicity and jet transverse momentum in 7 TeV proton-proton collisions with the ATLAS detector
• Search for standard model production of four top quarks in the lepton + jets channel in pp collisions at sqrt(s) = 8 TeV
• New Physics at the LHC: A Les Houches Report. Physics at Tev Colliders 2007 -- New Physics Working Group
• Searching for $Z^{\prime }$ bosons decaying to gluons
• Search for a heavy vector boson decaying to two gluons in {$\boldmath{p\bar{p}}$} collisions at {$\boldmath{\sqrt{s}=1.96}$ TeV

Cited by in corpus (12)

• NLO electroweak corrections to off-shell top-antitop production with leptonic decays at the LHC
• Event Generators for High-Energy Physics Experiments
• Top-philic heavy resonances in four-top final states and their EFT interpretation
• NLO QCD corrections to full off-shell production of $t\bar{t}Z$ including leptonic decays
• Four-top as probe of light top-philic New Physics
• Probing Top-philic New Physics via Four-Top-Quark Production
• Correlating the CDF $W$-boson mass shift with the $b\to s{\ell }^{+}{\ell }^{-}$ anomalies
• Search for top-philic heavy resonances in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Probing a ${\mathrm{Z}}^{\prime }$ with non-universal fermion couplings through top quark fusion, decays to bottom quarks, and machine learning techniques
• Searching for top-philic heavy resonances in boosted four-top final states
• Flavorful Electroweak Precision Observables in the Standard Model Effective Field Theory
• Tagging ultra-boosted jets at FCC-hh using machine learning techniques