Large scale separation and hadronic resonances from a new strongly interacting sector

Abstract

A large separation of scales is frequently required by theories describing physics beyond the Standard Model. In mass-split models with some massless (light) and some heavy flavors, large scale separation arises by construction if the system is conformal in the ultraviolet but chirally broken in the infrared. Due to the presence of a conformal fixed point, such chirally broken systems show hyperscaling and have a highly constrained resonance spectrum that is significantly different from the QCD spectrum. We present numerical evidence for hyperscaling of both light-light and heavy-heavy meson resonances and show that they only depend on the ratio of the light and heavy flavor masses. The heavy-heavy spectrum is qualitatively different from QCD. The mass of heavy-heavy quarkonia e.g. is not proportional to the constituent quark mass.

arXiv commentTalk presented at The European Physical Society Conference on High Energy Physics, 5-12 July, 2017, Venice; 6 pages, 3 figures

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• Nonperturbative investigations of SU(3) gauge theory with eight dynamical flavors
• Nonperturbative beta function of twelve-flavor SU(3) gauge theory
• Nonperturbative beta function of eight-flavor SU(3) gauge theory
• Large scale separation and resonances within LHC range from a prototype BSM model
• Large scale separation and hadronic resonances from a new strongly interacting sector
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• Emergent strongly coupled ultraviolet fixed point in four dimensions with 8 Kähler-Dirac fermions
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• The Techni-Pati-Salam Composite Higgs
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• Composite Higgs from mass-split models
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• Mass splittings in a linear sigma model for multiflavor gauge theories
• Examining the Low Energy Dynamics of Walking Gauge Theory
• Investigating BSM Models with Large Scale Separation