The electric radius,rE,and the magnetic radius,rM,of the proton are fundamental quantities of low-energy QCD,as they are a measure of the probe-dependent size of the proton.
The proton charge radius rP is a fundamental quantity in particle physics,as it challenges our understanding of the so successful Standard Model in the non-perturbative regime of the strong interactions.It is defined ...The proton charge radius rP is a fundamental quantity in particle physics,as it challenges our understanding of the so successful Standard Model in the non-perturbative regime of the strong interactions.It is defined by the slope of the proton charge form factor GE p etT at zero momentum transfer,with t the invariant four-momentum transfer squared.The proton charge radius was first indirectly measured in the Nobel prize winning electron scattering experiments by Hofstadter et al.[1,2],who fitted the form factor data with a dipole form and extracted the radius from the slope of the dipole.展开更多
基金supported in part by the Deutsche Forschungsgemeinschaft(DFG,German Research Foundation)(279384907-CRC 1245)the DFG(196253076-TRR 110)+4 种基金the National Natural Science Foundation of China(12070131001)within the framework of the Sino-German CRC 110“Symmetries and the Emergence of Structure in QCD”supported by the Chinese Academy of Sciences(CAS)President’s International Fellowship Initiative(PIFI)(2018DM0034)the VolkswagenStiftung(93562)the EU Horizon 2020 research and innovation programme,STRONG-2020 project(824093).
文摘The electric radius,rE,and the magnetic radius,rM,of the proton are fundamental quantities of low-energy QCD,as they are a measure of the probe-dependent size of the proton.
基金supported in part by the Deutsche Forschungsgemeinschaft(DFG,German Research Foundation)-Projektnummer 279384907-CRC 1245the DFG and the NSFC through funds provided to the Sino-German CRC 110“Symmetries and the Emergence of Structure in QCD”+2 种基金supported by the Chinese Academy of Sciences(CAS)President’s International Fellowship Initiative(PIFI)(2018DM0034)by Volkswagen Stiftung(93562)supported by the German Federal Ministry of Education and Research(BMBF)(05P18RDFN1).
文摘The proton charge radius rP is a fundamental quantity in particle physics,as it challenges our understanding of the so successful Standard Model in the non-perturbative regime of the strong interactions.It is defined by the slope of the proton charge form factor GE p etT at zero momentum transfer,with t the invariant four-momentum transfer squared.The proton charge radius was first indirectly measured in the Nobel prize winning electron scattering experiments by Hofstadter et al.[1,2],who fitted the form factor data with a dipole form and extracted the radius from the slope of the dipole.
