Diquark Higgs at LHC

Abstract

Existence of color sextet diquark Higgs fields with TeV masses will indicate a fundamentally different direction for unification than conventional grand unified theories. There is a class of partial unification models based on the gauge group $SU(2{)}_L\times SU(2{)}_R\times SU(4{)}_c$ that implement the seesaw mechanism for neutrino mass with seesaw scale around $10^{11}$ GeV, where indeed such light fields appear naturally despite the high gauge symmetry breaking scale. They couple only to up-type quarks in this model. We discuss phenomenological constraints on these fields and show that they could be detected at LHC via their decay to either $tt$ or single top + jet. We also find that existing Tevatron data gives a lower bound on its mass somewhere in the 400-500 GeV, for reasonable values of its coupling.

5 pages, 3 figures

References in corpus (11)

• The Cosmological Parameters 2006
• Big-Bang nucleosynthesis (Particle Data Group mini-review)
• Global QCD Analysis of Parton Structure of the Nucleon: CTEQ5 Parton Distributions
• LHC Signals from Warped Extra Dimensions
• Top Production: Sensitivity to New Physics
• The Bulk RS KK-gluon at the LHC
• ATLAS sensitivity to top quark and W boson polarization in $t\bar{t}$ events
• Top quark spin correlations in the Randall-Sundrum model at the CERN Large Hadron Collider
• Supersymmetric $SU(2{)}_L\times SU(2{)}_R\times SU(4{)}_c$ and observable neutron-antineutron oscillation
• Top Spin Correlations in Theories with Large Extra-Dimensions at the Large Hadron Collider
• Observable Neutron Antineutron Oscillation in High Scale Seesaw Models

Cited by in corpus (43)

• Simplified Models for LHC New Physics Searches
• Explorations of the Top Quark Forward-Backward Asymmetry at the Tevatron
• Neutron-Anti-Neutron Oscillation: Theory and Phenomenology
• Forward-backward asymmetry of top quark in diquark models
• Manifestations of Top Compositeness at Colliders
• Post-Sphaleron Baryogenesis and an Upper Limit on the Neutron-Antineutron Oscillation Time
• Flavourful Production at Hadron Colliders
• Color Sextet Scalars at the CERN Large Hadron Collider
• Neutrino Mass Hierarchy and neutron-anti-neutron Oscillation from Baryogenesis
• Squarkonium, diquarkonium and octetonium at the LHC and their di-photon decays
• Minimal Matter at the Large Hadron Collider
• Top-antitop and Top-top Resonances in the Dilepton Channel at the CERN LHC
• Color Sextet Scalars in Early LHC Experiments
• Unified explanation of flavor anomalies, radiative neutrino mass and ANITA anomalous events in a vector leptoquark model
• Coupling Unification, GUT-Scale Baryogenesis and Neutron-Antineutron Oscillation in SO(10)
• Supermodels for early LHC
• Testing new physics models by top charge asymmetry and polarization at the LHC
• Baryon Number Violating Scalar Diquarks at the LHC
• Color Sextet Vector Bosons and Same-Sign Top Quark Pairs at the LHC
• Exotic see-saw mechanism for neutrinos and leptogenesis in a Pati-Salam model
• CP violation in $D^0\to (K^{-}{K}^{+},{\pi }^{-}{\pi }^{+})$ from diquarks
• Color Triplet Diquarks at the LHC
• Simulation of Sextet Diquark Production
• Processes that break baryon number by two units and the Majorana nature of the neutrino
• Color & Weak triplet scalars, the dimuon asymmetry in $B_s$ decay, the top forward-backward asymmetry, and the CDF dijet excess
• The Color Discriminant Variable and Scalar Diquarks at the LHC
• LHC Constraints on Scalar Diquarks
• Impact of colored scalars on $D^0-{\bar{D}}^0$ mixing in diquark models
• Consistency and Interpretation of the LHC (Di-)Di-Jet Excesses
• Pursuit of paired dijet resonances in the Run 2 dataset with ATLAS
• Diquark resonance and single top production at the Large Hadron Collider
• Threshold resummation for the production of a color sextet (antitriplet) scalar at the LHC
• Diquarks from a fourth family
• Observable n - anti-n Oscillations with New Physics at LHC
• Spectrum of colour sextet scalars in realistic SO(10) GUT
• NLO QCD corrections to the resonant Vector Diquark production at the LHC
• Connection between $\nu n\to \bar{\nu }\bar{n}$ reactions and $n$-$\bar{n}$ oscillations via additional Higgs triplets
• Type-II neutrino seesaw mechanism extension of NMSSM from SUSY breaking mechanisms
• Neutron-neutral particle mixing and its observable consequences
• Dineutron decay into sterile anti-neutrinos in neutron stars and its observable consequences
• Measuring Electroweak Quantum Numbers of Color Sextet Resonances at the LHC
• LHC probes of the 10 TeV scale
• The phenomenological cornucopia of SU(3) exotica