Stealth QCD-like Strong Interactions and the t-tbar Asymmetry
arXiv:1407.8188 · doi:10.1103/PhysRevD.91.095009
Abstract
We show that a new strongly interacting sector can produce large enhancements of the t-tbar asymmetries at the Tevatron. The Standard Model is extended by a new vector-like flavor triplet of fermions and one heavy scalar, all charged under a hypercolor gauge group SU(3) HC. This simple extension results in a number of new resonances. The predictions of our model are rather rigid once a small number of UV parameters are fixed, since all the strong dynamics can be directly taken over from our understanding of QCD dynamics. Despite the rather low hypercolor confinement scale of ~100 GeV, the new strongly interacting sector is stealth. It is shielded from present direct and indirect NP searches since the light resonances are QCD singlets, whereas the production of the heavier QCD colored resonances leads predominantly to high multiplicity final states. Improved searches can potentially be devised using top tagged final states or decays into a small number of hypercolor pions.
arXiv comment25 pages, 14 figures
References in corpus (81)
- MadGraph 5 : Going Beyond
- First results from the LUX dark matter experiment at the Sanford Underground Research Facility
- Implications of CTEQ global analysis for collider observables
- Echoes of a Hidden Valley at Hadron Colliders
- QCD and strongly coupled gauge theories: challenges and perspectives
- Next-to-leading order calculation of three-jet observables in hadron-hadron collision
- Three-jet cross sections in hadron-hadron collisions at next-to-leading order
- A precision constraint on multi-Higgs-doublet models
- Phenomenology of Hidden Valleys at Hadron Colliders
- Branching fractions, polarisation and asymmetries of B -> VV decays
- Search for new particles decaying into dijets in proton-antiproton collisions at sqrt(s) = 1.96 TeV
- Charge asymmetry of heavy quarks at hadron colliders
- Charge asymmetry in hadroproduction of heavy quarks
- Charge asymmetries of top quarks at hadron colliders revisited
- Toward the excited isoscalar meson spectrum from lattice QCD
- Macroscopic Strings and "Quirks" at Colliders
- Revisiting parity non-conservation in cesium
- Two-loop Renormalization Group Equations in General Gauge Field Theories
- Top quark forward-backward asymmetry from new t-channel physics
- Measurement of the top quark forward-backward production asymmetry and its dependence on event kinematic properties
- The electroweak contribution to the top quark forward-backward asymmetry at the Tevatron
- Top quark and leptonic charge asymmetries for the Tevatron and LHC
- Quirky Composite Dark Matter
- Heavy meson masses and decay constants from relativistic heavy quarks in full lattice QCD
- Vectorlike Confinement at the LHC
- Light-Cone Distribution Amplitudes of Axial-vector Mesons
- Direct determination of the strange and light quark condensates from full lattice QCD
- Constraints on the gluon PDF from top quark pair production at hadron colliders
- Evidence for associated production of a single top quark and W boson in pp collisions at sqrt(s) = 7 TeV
- Electroweak Sudakov Corrections and the Top Quark Forward-Backward Asymmetry
- Probing the Tevatron t tbar asymmetry at LHC
- Combination of measurements of the top-quark pair production cross section from the Tevatron Collider
- Measurement of dijet angular distributions at sqrt{s}=1.96TeV and searches for quark compositeness and extra spatial dimensions
- Measurements of top quark pair relative differential cross-sections with ATLAS in pp collisions at sqrt(s) = 7 TeV
- Top quark asymmetry from a non-Abelian horizontal symmetry
- Inclusive and differential measurements of the t t-bar charge asymmetry in proton-proton collisions at sqrt(s) = 7 TeV
- Measurement of the forward-backward asymmetry in top quark-antiquark production in ppbar collisions using the lepton+jets channel
- The top-pair forward-backward asymmetry beyond NLO
- Low Scale Flavor Gauge Symmetries
- Forward-backward asymmetry in t anti-t production from flavour symmetries
- On Models of New Physics for the Tevatron Top A_FB
- Search for pair production of massive particles decaying into three quarks with the ATLAS detector in sqrt(s) = 7 TeV pp collisions at the LHC
- Signals of New Physics in the Underlying Event
- Technicolor with a Massless Scalar Doublet
- Simple models for the top asymmetry: constraints and predictions
- Oblique Corrections in Technicolor with a Scalar
- Search for pair-produced massive coloured scalars in four-jet final states with the ATLAS detector in proton-proton collisions at sqrt(s) = 7 TeV
- Review of new physics effects in t-tbar production
- Determination of B*B pi coupling in unquenched QCD
- Measurement of the t t-bar production cross section in the dilepton channel in pp collisions at sqrt(s) = 8 TeV
- The Quirky Collider Signals of Folded Supersymmetry
- Searches for light- and heavy-flavour three-jet resonances in pp collisions at sqrt(s) = 8 TeV
- Colored Resonances at the Tevatron: Phenomenology and Discovery Potential in Multijets
- Searching for Multijet Resonances at the LHC
- Search for pair-produced dijet resonances in four-jet final states in pp collisions at sqrt(s) = 7 TeV
- Strong D* -> D+pi and B* -> B+pi couplings
- Decay of axial-vector mesons into VP and P
- Flavor Symmetric Sectors and Collider Physics
- Scalar-mediated forward-backward asymmetry
- The LHC Phenomenology of Vectorlike Confinement
- Lattice measurement of the couplings g_infinity and g_Bstar_B_pi
- Search for quark compositeness in dijet angular distributions from pp collisions at sqrt(s) = 7 TeV
- Unnatural Origin of Fermion Masses for Technicolor
- Superconformal Technicolor
- Dynamical Electroweak Symmetry Breaking with a Heavy Fourth Generation
- Observation of B^0_(s) -> J/ψf_1(1285) decays and measurement of the f_1(1285) mixing angle
- Top condensation as a motivated explanation of the top forward-backward asymmetry
- Measurements of the t t-bar charge asymmetry using the dilepton decay channel in pp collisions at sqrt(s) = 7 TeV
- Top forward-backward asymmetry and the CDF Wjj excess in leptophobic U(1)' flavor models
- Probing Minimal Flavor Violation at the LHC
- Confronting Top AFB with Parity Violation Constraints
- Superconformal Technicolor: Models and Phenomenology
- Tevatron Top Versus LHC Top Physics
- Search for resonant top plus jet production in ttbar + jets events with the ATLAS detector in pp collisions at sqrt(s) = 7 TeV
- Search for charge-asymmetric production of W' bosons in top pair + jet events from pp collisions at sqrt(s) = 7 TeV
- Quirks in supersymmetry with gauge coupling unification
- Forward Tevatron Tops and Backward LHC Tops with Associates
- Diagnosing the top-quark angular asymmetry using LHC intrinsic charge asymmetries
- Some Results on Vector and Tensor Meson Mixing in a Generalized QCD-like Theory
- Search for a heavy particle decaying to a top quark and a light quark in collisions at TeV
- NLO QCD corrections to tW' and tZ' production in forward-backward asymmetry models
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- Effective Theories of Dark Mesons with Custodial Symmetry
- Perturbative Unitarity of Strongly Interacting Massive Particle Models
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