Neutral Naturalness from the Orbifold Higgs

Abstract

We present a general class of natural theories in which the Higgs is a pseudo-goldstone boson in an orbifolded gauge theory. The symmetry protecting the Higgs at low energies is an accidental global symmetry of the quadratic action, rather than a full continuous symmetry. The lightest degrees of freedom protecting the weak scale carry no Standard Model (SM) quantum numbers and interact with visible matter principally through the Higgs portal. We find that the twin Higgs is the simplest example of an orbifold Higgs. This opens the door to the systematic study of "neutral naturalness": natural theories with SM-neutral states that are as yet untested by the LHC.

5 pages, 1 figure

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• The Higgs Portal Above Threshold
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• Gegenbauer's Twin
• The Left-Right Symmetric Composite Higgs
• The RG-improved Twin Higgs effective potential at NNLL
• Holographic Completion of Minimal Neutral Naturalness Model and Deconstruction
• A Tale of Two Twin Higgses: Addressing Little Hierarchy in Natural 2HDM Framework
• Signatures of an $S_3$-Orbifold Higgs Model