Emergent Hadron Mass in Strong Dynamics

Abstract

Emergent Hadron Mass (EHM) is a mechanism capable of explaining both the unnaturally small (pion) and large (proton) masses of hadrons and if not the origin of confinement, then intimately connected with it. Even though the modern formulation of EHM has only recently been completed, it is rapidly becoming a fundamental focus for modern and future experimental efforts aimed at understanding the strong force within the Standard Model. Using Dyson-Schwinger equations for the gluon, ghost and quark propagators, I will introduce the main EHM concepts and illustrate how far this framework can take us in understanding strong interaction phenomenology.

arXiv comment34 pages, 16 figures; contribution to the 2021 School on the Physics of Baryons, Oct 18-22 2021, Sevilla; v2: improved discussion of the effective charge

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• Gauge Sector Dynamics in QCD
• QCD Running Couplings and Effective Charges
• Emergence of mass in the gauge sector of QCD
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• Lattice three-gluon vertex in extended kinematics: planar degeneracy
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• Strong Interaction Physics at the Luminosity Frontier with 22 GeV Electrons at Jefferson Lab
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• Origin of the Proton Mass
• Contact interaction analysis of octet baryon axialvector and pseudoscalar form factors
• Composition of low-lying $\mathbf{J}={\frac{3}{2}}^{\pm }\mathbf{\Delta }$-baryons
• Polarised parton distribution functions and proton spin
• Pion spectroscopy and dynamics using the holographic light-front Schrödinger equation and the 't Hooft equation
• Production and decay of polarized hyperon-antihyperon pairs
• New Physics Search at the CEPC: a General Perspective
• Gluon mass scale through the Schwinger mechanism
• Hadron Structure using Continuum Schwinger Function Methods
• $\Delta$-baryon axialvector and pseudoscalar form factors, and associated PCAC relations
• Three-gluon vertex in Landau-gauge from quenched-lattice QCD in general kinematics
• Proper constituent gluon mass as the final piece to construct hybrid mesons
• Investigating topped hadrons to probe the boundaries of the potential model