Condensate Enhancement and D-Meson Mixing in Technicolor Theories

Abstract

Since the pioneering work of Eichten and Lane it has been known that the scale of the interactions responsible for the generation of the strange-quark mass in extended technicolor theories must, absent any "GIM-like" mechanism for suppressing flavor-changing neutral currents, be greater than of order 1000 TeV. In this note we point out that the constraint from the neutral D-meson system is now equally strong, implying that the charm quark mass must also arise from flavor dynamics at a scale this high. We then quantify the degree to which the technicolor condensate must be enhanced in order to yield the observed quark masses, if the extended technicolor scale is of order 1000 TeV. Our results are intended to provide a framework in which to interpret and apply the results of lattice studies of conformal strongly interacting gauge theories, and the corresponding numerical measurements of the anomalous dimension of the mass operator in candidate theories of "walking" technicolor.

6 pages, references added and re-ordered

References in corpus (7)

• Nearly conformal gauge theories in finite volume
• The infrared dynamics of Minimal Walking Technicolor
• Mass anomalous dimension in SU(2) with two adjoint fermions
• Finite-size scaling tests for SU(3) lattice gauge theory with color sextet fermions
• Toward TeV Conformality
• Conformal or Walking? Monte Carlo renormalization group studies of SU(3) gauge models with fundamental fermions
• Exploration of SU(N_c) gauge theory with many Wilson fermions at strong coupling

Cited by in corpus (15)

• Running coupling and mass anomalous dimension of SU(3) gauge theory with two flavors of symmetric-representation fermions
• Scaling relations for the entire spectrum in mass-deformed conformal gauge theories
• Mixed dark matter from technicolor
• The infrared regime of SU(2) with one adjoint Dirac flavour
• Running coupling constant of ten-flavor QCD with the Schrödinger functional method
• MCRG Minimal Walking Technicolor
• Mass anomalous dimension in sextet QCD
• An Ultraviolet Chiral Theory of the Top for the Fundamental Composite (Goldstone) Higgs
• Anomalous dimensions on the lattice
• Dispersive analysis of neutral meson mixing
• Running coupling constant and mass anomalous dimension of six-flavor SU(2) gauge theory
• Lattice studies of QCD-like theories with many fermionic degrees of freedom
• Walking Technipions in a Holographic Model
• Finite isospin density probe for conformality
• Beyond the Standard Model: Charting Fundamental Interactions via Lattice Simulations