期刊
CHINESE PHYSICS C
卷 46, 期 1, 页码 -出版社
IOP Publishing Ltd
DOI: 10.1088/1674-1137/ac3071
关键词
continuum Schwinger function methods; emergence of hadron mass; Nambu-Goldstone modes - pions and kaons; nonperturbative quantum field theory; parton distributions; strong interactions
资金
- National Natural Science Foundation of China [12135007, 11805097]
- Jiangsu Provincial Natural Science Foundation of China [BK20180323]
- Spanish Ministry of Science and Innovation (MICINN) [PID2019-107844GB-C22]
- Junta de Andalucia [P18-FR-5057, UHU-1264517]
- University of Huelva [EPIT-2019]
Observable measures provide clear windows into emergent hadron mass and its modulations by Higgs boson interactions, which can be accessed through generalised parton distributions (GPDs). Analysis reveals various properties and predictions, such as stiffness differences between gravitational and electromagnetic form factors, tightness of K pressure profiles compared to pi profiles, and similar fraction of meson mass-squared carried by glue and sea combined as with the valence degrees-of-freedom.
Clear windows onto emergent hadron mass (EHM) and modulations thereof by Higgs boson interactions are provided by observable measures of pion and kaon structure, many of which are accessible via generalised parton distributions (GPDs). Beginning with algebraic GPD Ansatze, constrained entirely by hadron-scale pi and K valence-parton distribution functions (DFs), in whose forms both EHM and Higgs boson influences are manifest, numerous illustrations are provided. They include the properties of electromagnetic form factors, impact parameter space GPDs, gravitational form factors and associated pressure profiles, and the character and consequences of all-orders evolution. The analyses predict that mass-squared gravitational form factors are stiffer than electromagnetic form factors; reveal that K pressure profiles are tighter than pi profiles, with both mesons sustaining near-core pressures at magnitudes similar to that expected at the core of neutron stars; deliver parameter-free predictions for pi and K valence, glue, and sea GPDs at the resolving scale zeta = 2 GeV; and predict that at this scale the fraction of meson mass-squared carried by glue and sea combined matches that lodged with the valence degrees-of-freedom, with a similar statement holding for mass-squared radii.
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