LHC signatures of vector-like quarks
arXiv:1207.5607
Abstract
This work provides an overview on the current status of phenomenology and searches for heavy vector-like quarks, which are predicted in many models of new physics beyond the Standard Model. Searches at Tevatron and at the LHC, here listed and shortly described, have not found any evidence for new heavy fermionic states (either chiral or vector-like), and have therefore posed strong bounds on their masses: depending on specific assumptions on the interactions and on the observed final state, vector-like quarks with masses up to roughly 400-600 GeV have been excluded by all experiments. In order to be as simple and model-independent as possible, the chosen framework for the phenomenological analysis is an effective model with the addition of a vector-like quark representation (singlet, doublet or triplet under SU(2)) which couples through Yukawa interactions with all SM families. The relevance of different observables for the determination of bounds on mixing parameters is then discussed and a complete overview of possible two-body final states for every vector-like quark is provided, including their subsequent decay into SM particles. A list and short description of phenomenological analyses present in literature is also provided for reference purposes.
review, 21 pages, 8 figures, 4 tables, typos corrected, references added, updated LHC bounds. Version accepted for publication in AHEP
References in corpus (62)
- Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
- Strong Dynamics and Electroweak Symmetry Breaking
- Little Higgs Review
- Light custodians in natural composite Higgs models
- Phenomenology of the Little Higgs Model
- The Electroweak Fit of the Standard Model after the Discovery of a New Boson at the LHC
- Top Quark Seesaw Theory of Electroweak Symmetry Breaking
- Identifying top partners at LHC
- Electroweak Symmetry Breaking via Top Condensation Seesaw
- Top Quarks and Electroweak Symmetry Breaking in Little Higgs Models
- Extra vector-like matter and the lightest Higgs scalar boson mass in low-energy supersymmetry
- Beautiful Mirrors and Precision Electroweak Data
- Effects of mixing with quark singlets
- Top Quark Seesaw, Vacuum Structure and Electroweak Precision Constraints
- Higgs Boson Mass, Sparticle Spectrum and Little Hierarchy Problem in Extended MSSM
- Realistic Composite Higgs Models
- A Higgs Conundrum with Vector Fermions
- Model-Independent Searches for New Quarks at the LHC
- A Fermionic Top Partner: Naturalness and the LHC
- Heavy Vector-like Top Partners at the LHC and flavour constraints
- Light Custodians and Higgs Physics in Composite Models
- A Little Solution to the Little Hierarchy Problem: A Vector-like Generation
- Theory and Phenomenology of Exotic Isosinglet Quarks and Squarks
- Search for a heavy top-quark partner in final states with two leptons with the ATLAS detector at the LHC
- Heavy Quarks Above the Top at the Tevatron
- Search for heavy bottom-like quarks in 4.9 inverse femtobarns of pp collisions at sqrt(s) = 7 TeV
- Higgs boson pair production in new physics models at hadron, lepton, and photon colliders
- A Strong Sector at the LHC: Top Partners in Same-Sign Dileptons
- Search for a Vector-like Quark with Charge 2/3 in t + Z Events from pp Collisions at sqrt(s) = 7 TeV
- Search for heavy, top-like quark pair production in the dilepton final state in pp collisions at sqrt(s) = 7 TeV
- Search for heavy bottom-like quarks decaying to an electron or muon and jets in collisions at TeV
- Raising the Higgs mass with Yukawa couplings for isotriplets in vector-like extensions of minimal supersymmetry
- Stealth gluons at hadron colliders
- Single Vectorlike Quark Production at the LHC
- Search for down-type fourth generation quarks with the ATLAS detector in events with one lepton and hadronically decaying W bosons
- Search for New Phenomena in ttbar Events with Large Missing Transverse Momentum in Proton-Proton Collisions at sqrt(s) = 7 TeV with the ATLAS Detector
- Search for pair produced fourth-generation up-type quarks in pp collisions at sqrt(s) = 7 TeV with a lepton in the final state
- Search for pair production of heavy top-like quarks decaying to a high-pT W boson and a b quark in the lepton plus jets final state at sqrt(s)=7 TeV with the ATLAS detector
- Search for same-sign top-quark production and fourth-generation down-type quarks in pp collisions at sqrt(s) = 7 TeV with the ATLAS detector
- LHC Signatures of a Vector-like b'
- The Phenomenology of a Top Quark Seesaw Model
- Higgs boson production via vector-like top-partner decays: diphoton or multilepton plus multijets channels at the LHC
- Search for pair-produced heavy quarks decaying to Wq in the two-lepton channel at sqrt(s) = 7 TeV with the ATLAS detector
- Search for pair production of a heavy up-type quark decaying to a W boson and a b quark in the lepton+jets channel with the ATLAS detector
- Search for a Heavy Top-Like Quark in p\bar{p} Collisions at {\surd}s = 1.96 TeV
- Search for New Particles Leading to Z+jets Final States in Collisions at TeV
- Atomic parity violation in cesium and implications for new physics
- Search for pair production of a new quark that decays to a Z boson and a bottom quark with the ATLAS detector
- Search for flavor changing neutral currents in top quark decays in pp collisions at 7 TeV
- Testing the Littlest Higgs Model with T-parity at the Large Hadron Collider
- New Higgs Production Mechanism in Composite Higgs Models
- Higgs Discovery through Top-Partners using Jet Substructure
- Search for Production of Heavy Particles Decaying to Top Quarks and Invisible Particles in collisions at TeV
- Search for a fourth generation t' quark in ppbar collisions at sqrt{s}=1.96 TeV
- Beautiful Mirrors at the LHC
- Search for heavy quarks decaying into a top quark and a W or Z boson using lepton + jets events in pp collisions at sqrt(s) = 7 TeV
- Search for New Particles in Final States with Large Jet Multiplicities and Missing Transverse Energy in ppbar Collisions at sqrt(s) = 1.96 TeV
- Search for the Top Partner at the LHC using Multi-b-Jet Channels
- Search for single vector-like quarks in ppbar collisions at sqrt(s) = 1.96 TeV
- Triangulating an exotic T quark
- Multi-lepton signals from the top-prime quark at the LHC
- Nondecoupling of a terascale isosinglet quark and rare K and B decays
Cited by in corpus (12)
- Model Independent Framework for Searches of Top Partners
- Vector-like Bottom Quarks in Composite Higgs Models
- Heavy Vector-like quark with charge 5/3 at the LHC
- Top Partner Probes of Extended Higgs Sectors
- Fully hadronic decays of a singly produced vector-like top partner at the LHC
- Reconstruction of Vector-like Top Partner from Fully Hadronic Final States
- Multi-tops at the LHC
- Radiatively Induced Type II seesaw and Vector-like 5/3 Charge Quarks
- Distinguishing Signatures of top-and bottom-type heavy vectorlike quarks at the LHC
- Interplay of vector-like top partner multiplets in a realistic mixing set-up
- Radiative decays of a singlet scalar boson through vector-like quarks
- A Model with Chiral Quarks of Electric Charges -4/3 and 5/3