A Light Dilaton in Walking Gauge Theories

Abstract

We analyze the existence of a dilaton in gauge theories with approximate infrared conformal symmetry. To the extent that these theories are governed in the infrared by an approximate fixed point (walking), the explicit breaking of the conformal symmetry at these scales is vanishingly small. If confinement and spontaneous chiral-symmetry breaking set in at some infrared scale, the resultant breaking of the approximate conformal symmetry can lead to the existence of a dilaton with mass parametrically small compared to the confinement scale, and potentially observable at the LHC.

5 pages, references added, final version in PRD

References in corpus (12)

• Light scalar at LHC: the Higgs or the dilaton?
• Conformality Lost
• Lattice Study of the Conformal Window in QCD-like Theories
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• Mass anomalous dimension in SU(2) with two adjoint fermions
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• A light scalar from walking solutions in gauge-string duality
• Postmodern Technicolor
• Phases of Chiral Gauge Theories
• Standard Model couplings and collider signatures of a light scalar
• Holographic Techni-dilaton
• Dilaton-assisted Dark Matter

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• Multiscale confining dynamics from holographic RG flows
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• Holographic Modelling of a Light Techni-Dilaton
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