Revealing pion and kaon structure via generalised parton distributions
Autor: | Khépani Raya, Craig D. Roberts, Lei Chang, Zhu-Fang Cui, Jose Rodríguez-Quintero, Jose-Manuel Morgado |
---|---|
Jazyk: | angličtina |
Rok vydání: | 2022 |
Předmět: |
Nuclear and High Energy Physics
Particle physics Continuum Schwinger function methods Nuclear Theory Meson Hadron FOS: Physical sciences Parton High Energy Physics - Experiment Nambu-Goldstone modes Nuclear Theory (nucl-th) High Energy Physics - Experiment (hep-ex) High Energy Physics - Lattice High Energy Physics - Phenomenology (hep-ph) Pion Pions and kaons Nambu-Goldstone modes-pions and kaons 22 Física Nuclear Experiment (nucl-ex) Nuclear Experiment Instrumentation Physics Parton distributions High Energy Physics::Phenomenology High Energy Physics - Lattice (hep-lat) Astronomy and Astrophysics Observable Strong interactions High Energy Physics - Phenomenology Distribution function Nonperturbative quantum field theory Higgs boson High Energy Physics::Experiment Impact parameter Emergence of hadron mass |
Zdroj: | Chinese Physics Arias Montano. Repositorio Institucional de la Universidad de Huelva Institut de Recerca i Tecnologia Agroalimentàries (IRTA) Digibug. Repositorio Institucional de la Universidad de Granada instname |
Popis: | Supported by 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); and University of Huelva (EPIT-2019) 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. National Natural Science Foundation of China (NSFC) 12135007 11805097 Natural Science Foundation of Jiangsu Province BK20180323 Spanish Government European Commission PID2019-107844GB-C22 Junta de Andalucia P18-FR-5057 UHU-1264517 University of Huelva EPIT-2019 |
Databáze: | OpenAIRE |
Externí odkaz: |