Emergence of Hadron Mass and Structure

Particles

article

Minghui Ding¹  Craig D. Roberts²  Sebastian M. Schmidt¹ 

[1] Helmholtz-Zentrum Dresden-Rossendorf;School of Physics, Nanjing University;Institute for Nonperturbative Physics, Nanjing University;III. Physikalisches Institut B, RWTH Aachen University

关键词: confinement of gluons and quarks;    continuum Schwinger function methods;    Dyson–Schwinger equations;    emergence of hadron mass;    parton distribution functions;    hadron form factors;    hadron spectra;    hadron structure and interactions;    nonperturbative quantum field theory;    quantum chromodynamics;   

DOI  :  10.3390/particles6010004

学科分类：社会科学、人文和艺术（综合）

来源: mdpi

【 摘 要 】

Visible matter is characterised by a single mass scale; namely, the proton mass. The proton’s existence and structure are supposed to be described by quantum chromodynamics (QCD); yet, absent Higgs boson couplings, chromodynamics is scale-invariant. Thus, if the Standard Model is truly a part of the theory of Nature, then the proton mass is an emergent feature of QCD; and emergent hadron mass (EHM) must provide the basic link between theory and observation. Nonperturbative tools are necessary if such connections are to be made; and in this context, we sketch recent progress in the application of continuum Schwinger function methods to an array of related problems in hadron and particle physics. Special emphasis is given to the three pillars of EHM—namely, the running gluon mass, process-independent effective charge, and running quark mass; their role in stabilising QCD; and their measurable expressions in a diverse array of observables.

【 授权许可】

CC BY