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Volume 363 - 37th International Symposium on Lattice Field Theory (LATTICE2019) - Main session
Constructing a composite Higgs model with built-in large separation of scales
O. Witzel,* A. Hasenfratz on behalf of the Lattice Strong Dynamics collaboration
*corresponding author
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Pre-published on: 2020 January 04
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Experimentally the existence of a light 125 GeV Higgs boson is well established but so far no other heavier resonances have been observed. Viable models to describe the Higgs boson as composite particle require hence to exhibit a large separation of scales. This occurs naturally in systems located near a conformal fixed point irrespective whether the system lies outside or inside the conformal window.
We demonstrate the latter case by investigating a mass-split model with four light and six heavy flavors. By construction mass-split models exhibit a large separation of scales and feature in addition a highly constrained hadron spectrum. We present results based on the low-lying connected meson spectrum. Although the light sector is chirally broken, we show that it exhibits hyperscaling which is typical for conformal systems.
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