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Multi-phase critical Higgs boson at colliders

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arxiv 2201.00824 v1 pith:IOMGJLKR submitted 2022-01-03 hep-ph

Multi-phase critical Higgs boson at colliders

classification hep-ph
keywords bosonmulti-phasecolliderscriticalityhiggslightphysicsscale
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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The recently proposed multi-phase criticality principle in Coleman-Weinberg models can provide a new explanation for the hierarchy between the electroweak and new physics scales. When applied to the Standard Model, a Higgs boson as light as the pseudo-Goldstone boson of broken scale invariance occurs. The suppressed mixing between the two light fields still carries information about the large scale of symmetry breaking, albeit up to logarithmic corrections. In this work we probe this scenario with the present LHC data and assess the impact of future lepton and hadron colliders. Our results show that the multi-phase criticality can easily explain the apparent absence of new physics at the energy scales tested in current experiments.

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