Di-boson signatures as Standard Candles for Partial Compositeness

Abstract

Composite Higgs Models are often constructed including fermionic top partners with a mass around the TeV scale, with the top partners playing the role of stabilizing the Higgs potential and enforcing partial compositeness for the top quark. A class of models of this kind can be formulated in terms of fermionic strongly coupled gauge theories. A common feature they all share is the presence of specific additional scalar resonances, namely two neutral singlets and a colored octet, described by a simple effective Lagrangian. We study the phenomenology of these scalars, both in a model independent and model dependent way, including the bounds from all the available searches in the relevant channels with di-boson and di-top final states. We develop a generic framework which can be used to constrain any model containing pseudo-scalar singlets or octets. Using it, we find that such signatures provide strong bounds on the compositeness scale complementary to the traditional EWPT and Higgs couplings deviations. In many cases a relatively light scalar can be on the verge of discovery as a first sign of new physics.

arXiv comment75 pages, 16 figures; version matches the published article. v3: Sign of C_t in Appendix C in Eqs. (C1, C7, C9) corrected. Analysis, results and conclusions of the main article are unchanged

References in corpus (44)

• MadGraph 5 : Going Beyond
• Parton distributions with LHC data
• Automatized One-Loop Calculations in 4 and D dimensions
• CalcHEP 3.4 for collider physics within and beyond the Standard Model
• A custodial symmetry for Zbb
• Package-X: A Mathematica package for the analytic calculation of one-loop integrals
• Search for dark matter, extra dimensions, and unparticles in monojet events in proton-proton collisions at sqrt(s) = 8 TeV
• Search for new phenomena in final states with an energetic jet and large missing transverse momentum in pp collisions at $\sqrt{s}=8$ TeV with the ATLAS detector
• Composite Higgses
• Search for new phenomena in the dijet mass distribution using $p-p$ collision data at $\sqrt{s}=8$ TeV with the ATLAS detector
• Fermionic UV completions of Composite Higgs models
• Light Top Partners for a Light Composite Higgs
• General Composite Higgs Models
• Search for resonances and quantum black holes using dijet mass spectra in proton-proton collisions at sqrt(s) = 8 TeV
• Search for new phenomena in final states with an energetic jet and large missing transverse momentum in $pp$ collisions at $\sqrt{s}=13$ TeV using the ATLAS detector
• UV descriptions of composite Higgs models without elementary scalars
• Fundamental Composite (Goldstone) Higgs Dynamics
• Flavor Changing Neutral Currents, an Extended Scalar Sector, and the Higgs Production Rate at the LHC
• Inclusive search for a vector-like T quark with charge 2/3 in pp collisions at sqrt(s) = 8 TeV
• Seeking Sgluons
• The Composite Higgs and Light Resonance Connection
• Search for high-mass diphoton resonances in $pp$ collisions at $\sqrt{s}=8$ TeV with the ATLAS detector
• Gauge theories of Partial Compositeness: Scenarios for Run-II of the LHC
• UV Completions of Partial Compositeness: The Case for a SU(4) Gauge Group
• Lattice tests of beyond Standard Model dynamics
• Search for resonant t t-bar production in proton-proton collisions at sqrt(s) = 8 TeV
• Search for pair-produced resonances decaying to jet pairs in proton-proton collisions at sqrt(s) = 8 TeV
• Search for top-quark partners with charge 5/3 in the same-sign dilepton final state
• Color-Octet Scalars of N=2 Supersymmetry at the LHC
• Fundamental Composite 2HDM: SU(N) with 4 flavours
• Search for production of $WW/WZ$ resonances decaying to a lepton, neutrino and jets in $pp$ collisions at $\sqrt{s}$ = 8 TeV with the ATLAS detector
• Composite scalars at the LHC: the Higgs, the Sextet and the Octet
• A Composite Little Higgs Model
• Flavor hierarchies from dynamical scales
• UV Completions of Composite Higgs Models with Partial Compositeness
• Multiscale Technicolor and Top Production
• Fundamental partial compositeness
• Search for new phenomena in photon+jet events collected in proton--proton collisions at sqrt(s) = 8 TeV with the ATLAS detector
• On Flavour and Naturalness of Composite Higgs Models
• A scalar hint from the diboson excess?
• Search for excited quarks in the photon+jet final state in proton-proton collisions at sqrt(s) = 8 TeV
• CP-even scalar boson production via gluon fusion at the LHC
• Detecting and Studying the Lightest Pseudo-Goldstone Boson at Future $pp$, $e^{+}{e}^{-}$ and ${\mu }^{+}{\mu }^{-}$ Colliders
• Tevatron Potential for Technicolor Search with Prompt Photons

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