Abstract
We introduce a new approach to the Higgs naturalness problem. The Higgs mixes with the dilaton of a conformal field theory (CFT) sector whose true ground state has a large negative vacuum energy. If the Higgs vacuum expectation value is nonzero and below O(TeV), the CFT admits a second metastable vacuum, where the expansion history of the Universe is conventional. As a result, only Hubble patches with unnaturally small values of the Higgs mass do not immediately crunch. The main experimental prediction of this mechanism is a dilaton in the 0.1-10GeV range that mixes with the Higgs and can be detected at future colliders and experiments searching for weakly coupled particles.
Highlights
Introduction.—While the discovery of the Higgs boson at the Large Hadron Collider [1,2] marked a triumph for the standard model of particle physics, the measured values of its mass and vacuum expectation value (VEV) remain unexplained
The most extreme break with standard beyond the standard model (BSM) lore is to rely on a fully anthropic reasoning for the existence of a light Higgs in the context of a multiverse with several patches, each corresponding to a different Higgs VEV
We introduce dynamics that can support the expansion of the Universe only when the Higgs VEV, h ≡ hH0i, is in a finite range
Summary
Introduction.—While the discovery of the Higgs boson at the Large Hadron Collider [1,2] marked a triumph for the standard model of particle physics, the measured values of its mass and vacuum expectation value (VEV) remain unexplained. The Higgs mixes with the dilaton of a conformal field theory (CFT) sector whose true ground state has a large negative vacuum energy.
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