Distinguishing Signatures of top-and bottom-type heavy vectorlike quarks at the LHC
arXiv:1404.3374 · doi:10.1103/PhysRevD.91.055015
Abstract
An SU(2) vectorlike singlet quark with a charge either +2/3 (t') or -1/3 (b') is predicted in many extensions of the Standard Model. The mixing of these quarks with the top or bottom lead to Flavor Changing Yukawa Interactions and Neutral Current. The decay modes of the heavier mass eigenstates are therefore different from the Standard Model type chiral quarks. The Large Hadron Collider (LHC) will provide an ideal environment to look for the signals of these exotic quarks. Considering all decays, including those involving Z- and Yukawa interactions, we show how one can distinguish between t' and b' from ratios of event rates with different lepton multiplicities. The ability to reconstruct the Higgs boson with a mass around 125.5 GeV plays an important role in such differentiation.
arXiv comment18 pages, 10 figures
References in corpus (39)
- 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
- PYTHIA 6.4 Physics and Manual
- PYTHIA 6.2 Physics and Manual
- FastJet user manual
- ALPGEN, a generator for hard multiparton processes in hadronic collisions
- The Littlest Higgs
- The Minimal Moose for a Little Higgs
- Matching matrix elements and shower evolution for top-quark production in hadronic collisions
- Identifying top partners at LHC
- CompHEP - a package for evaluation of Feynman diagrams and integration over multi-particle phase space. User's manual for version 33
- Effects of mixing with quark singlets
- Inclusive search for a vector-like T quark with charge 2/3 in pp collisions at sqrt(s) = 8 TeV
- A Higgs Conundrum with Vector Fermions
- Constraints on top couplings in models with exotic quarks
- Unravelling an extended quark sector through multiple Higgs production?
- Reproducing the Higgs boson data with vector-like quarks
- Pair production of heavy Q=2/3 singlets at LHC
- Search for Single Top Quark Production at LEP2
- Search for a Vector-like Quark with Charge 2/3 in t + Z Events from pp Collisions at sqrt(s) = 7 TeV
- The Z ->anti-b b decay asymmetry: lose-lose for the Standard Model
- Search for heavy bottom-like quarks decaying to an electron or muon and jets in collisions at TeV
- LHC Signatures of Warped-space Vectorlike Quarks
- 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
- The recent Higgs boson data and Higgs triplet model with vectorlike quarks
- The Hunt for New Physics in the Flavour Sector with up vector-like quarks
- Implications of String Constraints for Exotic Matter and Z' s Beyond the Standard Model
- LHC Signatures of a Vector-like b'
- Higgs boson production via vector-like top-partner decays: diphoton or multilepton plus multijets channels at the LHC
- Combined search for the quarks of a sequential fourth generation
- 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
- New Fermions at the LHC and Mass of the Higgs Boson
- Boosted Top Quark Signals for Heavy Vector Boson Excitations in a Universal Extra Dimension Model
- Contributions of vector-like quarks to radiative B meson decay
- Yukawa Corrections to Higgs Production in Top Partner Models
- LHC signatures of vector-like quarks
- A clean signal for a top-like isosinglet fermion at the Large Hadron Collider
- Large effects on $\BsBs$ mixing by vector-like quarks