Spectroscopy of SU(4) composite Higgs theory with two distinct fermion representations

Abstract

We have simulated the SU(4) lattice gauge theory coupled to dynamical fermions in the fundamental and two-index antisymmetric (sextet) representations simultaneously. Such theories arise naturally in the context of composite Higgs models that include a partially composite top quark. We describe the low-lying meson spectrum of the theory and fit the pseudoscalar masses and decay constants to chiral perturbation theory. We infer as well the mass and decay constant of the Goldstone boson corresponding to the non-anomalous U(1) symmetry of the model. Our results are broadly consistent with large-Nc scaling and vector-meson dominance.

53 pages, 24 figures, 14 tables. v2: updated to journal version

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• Nonperturbative investigations of SU(3) gauge theory with eight dynamical flavors
• Phase Transitions in Particle Physics -- Results and Perspectives from Lattice Quantum Chromo-Dynamics
• Light scalars in composite Higgs models
• Third-family quark-lepton unification with a fundamental composite Higgs
• Sp(4) gauge theories on the lattice: $N_f=2$ dynamical fundamental fermions
• Hadrons and Nuclei
• Baryon spectrum of SU(4) composite Higgs theory with two distinct fermion representations
• Sp(4) gauge theories on the lattice: Quenched fundamental and antisymmetric fermions
• Higgs Physics: It ain't over till it's over
• Gauge/gravity dynamics for composite Higgs models and the top mass
• Gauge/gravity dual dynamics for the strongly coupled sector of composite Higgs models
• Partial compositeness and baryon matrix elements on the lattice
• Composite Higgs and Dark Matter Model in SU(6)/SO(6)
• A Near-Conformal Composite Higgs Model
• Vacuum misalignment and pattern of scalar masses in the SU(5)/SO(5) composite Higgs model
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• Glueballs and Strings in $Sp(2N)$ Yang-Mills theories
• Classification of NLO operators for composite Higgs models
• Anomalous dimensions of potential top-partners
• Loop-Generated Neutrino Masses in Composite Higgs Models
• Lattice Gauge Theory for Physics Beyond the Standard Model
• Into the conformal window: multi-representation gauge theories
• Multi-Representation Dynamics of SU(4) Composite Higgs Models: Chiral Limit and Spectral Reconstructions
• The Large $N_c$ limit of QCD on the lattice
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• Towards top-down holographic composite Higgs: minimal coset from maximal supergravity
• Toward minimal composite Higgs models from regular geometries in bottom-up holography
• Lattice simulations of a gauge theory with mixed adjoint-fundamental matter
• Scattering of Goldstone Bosons and resonance production in a Composite Higgs model on the lattice
• Investigating the conformal behaviour of SU(2) with one adjoint Dirac flavor
• Towards a fundamental safe theory of composite Higgs and Dark Matter
• Electroweak Top Couplings, Partial Compositeness and Top Partner Searches
• Coloured spin-1 states in composite Higgs models
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• Exploring gauge theories with adjoint matter on the lattice
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• Partial compositeness under precision scrutiny
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• Review of Neutral Naturalness
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• Sp(4) gauge theories and beyond the standard model physics
• Towards a composite Higgs and a partially composite top quark
• Composite two-Higgs doublet model from dilaton effective field theory
• SU(2) gauge theory with one and two adjoint fermions towards the continuum limit
• More on the flavor dependence of $m_{\varrho }/f_{\pi }$