Multiple Z' -> t-tbar signals in a 4D Composite Higgs Model
arXiv:1212.5948 · doi:10.1103/PhysRevD.88.074024
Abstract
We study the production of top-antitop pairs at the Large Hadron Collider as a testbed for discovering heavy Z' bosons belonging to a composite Higgs model, as, in this scenario, such new gauge interaction states are sizeably coupled to the third generation quarks of the Standard Model. We study their possible appearance in cross section as well as (charge and spin) asymmetry distributions. Our calculations are performed in the minimal four-dimensional formulation of such a scenario, namely the 4-Dimensional Composite Higgs Model (4DCHM), which embeds five new s. We pay particular attention to the case of nearly degenerate resonances, highlighting the conditions under which these are separable in the aforementioned observables. We also discuss the impact of the intrinsic width of the new resonances onto the event rates and various distributions. We confirm that the 14 TeV stage of the LHC will enable one to detect two such states, assuming standard detector performance and machine luminosity. A mapping of the discovery potential of the LHC of these new gauge bosons is given. Finally, from the latter, several benchmarks are extracted which are amenable to experimental investigation.
30 pages, 3 figures. Text and figures updated to match published version
References in corpus (34)
- Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
- Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
- Electroweak gauge boson production at hadron colliders through O(alpha_s^2)
- Light custodians in natural composite Higgs models
- Updated predictions for the total production cross sections of top and of heavier quark pairs at the Tevatron and at the LHC
- The theoretical top quark cross section at the Tevatron and the LHC
- Measurement of differential top-quark pair production cross sections in pp collisions at sqrt(s) = 7 TeV
- Top pair invariant mass distribution: a window on new physics
- Electroweak effects in top-quark pair production at Hadron Colliders
- Measurement of the charge asymmetry in top quark pair production in pp collisions at sqrt(s) = 7 TeV using the ATLAS detector
- Spin Correlation Effects in Top Quark Pair Production at the LHC
- Inclusive Heavy Flavor Hadroproduction in NLO QCD: the Exact Analytic Result
- Search for resonances decaying into top-quark pairs using fully hadronic decays in pp collisions with ATLAS at sqrt(s) = 7 TeV
- Search for narrow resonances in dilepton mass spectra in pp collisions at sqrt(s) = 7 TeV
- Search for leptonic decays of W' bosons in pp collisions at sqrt(s) = 7 TeV
- On measurement of top polarization as a probe of production mechanisms at the LHC
- Weak corrections to gluon-induced top-antitop hadro-production
- A search for ttbar resonances in lepton+jets events with highly boosted top quarks collected in pp collisions at sqrt(s) = 7 TeV with the ATLAS detector
- NLO QED contributions to top-pair production at hadron collider
- Polarized tops from new physics: signals and observables
- LanHEP - a package for automatic generation of Feynman rules from the Lagrangian. Updated version 3.1
- A New Twist on Top Quark Spin Correlations
- Precision predictions for Z'-production at the CERN LHC: QCD matrix elements, parton showers, and joint resummation
- Search for ttbar resonances in the lepton plus jets final state in ppbar collisions at sqrt{s}=1.96TeV
- Weak interaction corrections to hadronic top quark pair production: contributions from quark-gluon and induced reactions
- Search for Z' resonances decaying to ttbar in dilepton+jets final states in pp collisions at sqrt(s) = 7 TeV
- Exploring Drell-Yan signals from the 4D Composite Higgs Model at the LHC
- Unravelling an Extra Neutral Gauge Boson at the LHC using Third Generation Fermions
- Top Quark Polarization As A Probe of Models with Extra Gauge Bosons
- The 4-Dimensional Composite Higgs Model (4DCHM) and the 125 GeV Higgs-like signals at the LHC
- Leptonic final states from di-boson production at the LHC in the 4-Dimensional Composite Higgs Model
- Uncovering quasi-degenerate Kaluza-Klein Electro-Weak gauge bosons with top asymmetries at the LHC
- Distinguishing Z' models with polarised top pairs
- The role of charge and spin asymmetries in profiling Z'-> tt events
Cited by in corpus (7)
- Production of Z'-Boson Resonances with Large Width at the LHC
- Top pair production at a future machine in a composite Higgs scenario
- Polarization of top and chargino from stop decay in natural SUSY
- Leptonic final states from di-boson production at the LHC in the 4-Dimensional Composite Higgs Model
- Convergent Bayesian Global Fits of 4D Composite Higgs Models
- Resonances from Quiver Theories at the LHC
- Heavy Z': resonant versus non-resonant searches