Parity Doubling and the S Parameter Below the Conformal Window

Abstract

We describe a lattice simulation of the masses and decay constants of the lowest-lying vector and axial resonances, and the electroweak S parameter, in an SU(3) gauge theory with $N_f=2$ and 6 fermions in the fundamental representation. The spectrum becomes more parity doubled and the S parameter per electroweak doublet decreases when $N_f$ is increased from 2 to 6, motivating study of these trends as $N_f$ is increased further, toward the critical value for transition from confinement to infrared conformality.

4 pages, 5 figures; to be submitted to PRL

References in corpus (13)

• Physical Results from 2+1 Flavor Domain Wall QCD and SU(2) Chiral Perturbation Theory
• Lattice Study of the Conformal Window in QCD-like Theories
• Lattice Study of Conformal Behavior in SU(3) Yang-Mills Theories
• The Physical Spectrum of Conformal SU(N) Gauge Theories
• Nearly conformal gauge theories in finite volume
• The infrared dynamics of Minimal Walking Technicolor
• Toward TeV Conformality
• Conformal or Walking? Monte Carlo renormalization group studies of SU(3) gauge models with fundamental fermions
• Behavior of the S Parameter in the Crossover Region Between Walking and QCD-Like Regimes of an SU(N) Gauge Theory
• S-parameter and pseudo-Nambu-Goldstone boson mass from lattice QCD
• The S Parameter in QCD from Domain Wall Fermions
• Anomaly induced QCD potential and Quark Decoupling
• Exploration of SU(N_c) gauge theory with many Wilson fermions at strong coupling

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