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Nucleon structure from basis light-front quantization

文献类型：期刊论文

作者Xu, Siqi1,3,4; Mondal, Chandan1,3,4; Lan, Jiangshan1,2,3,4; Zhao, Xingbo1,3,4; Li, Yang5,6; Vary, James P.5
刊名PHYSICAL REVIEW D
出版日期2021-11-24
卷号104期号:9页码:24
ISSN号2470-0010
DOI10.1103/PhysRevD.104.094036
通讯作者Xu, Siqi(xsq234@impcas.ac.cn) ; Mondal, Chandan(mondal@impcas.ac.cn) ; Lan, Jiangshan(jiangshanlan@impcas.ac.cn) ; Zhao, Xingbo(xbzhao@impcas.ac.cn) ; Li, Yang(leeyoung1987@ustc.edu.cn) ; Vary, James P.(jvary@iastate.edu)
英文摘要We produce the light-front wave functions (LFWFs) of the nucleon from a basis light-front approach in the leading Fock-sector representation. We solve for the mass eigenstates from a light-front effective Hamiltonian, which includes a confining potential adopted from light-front holography in the transverse direction, a longitudinal confinement, and a one-gluon exchange interaction with fixed coupling. We then employ the LFWFs to obtain the electromagnetic and axial form factors, the parton distribution functions (PDFs), and the generalized parton distribution functions for the nucleon. The electromagnetic and axial form factors of the proton agree with the experimental data, whereas the neutron form factors deviate somewhat from the experiments in the low-momentum transfer region. The unpolarized, the helicity, and the transversity valence quark PDFs, after QCD scale evolution, are fairly consistent with the global fits to the data at the relevant experimental scales. The helicity asymmetry for the down quark also agrees well with the measurements; however, the asymmetry for the up quark shows a deviation from the data, especially in the small x region. We also find that the tensor charge agrees well with the extracted data and the lattice QCD predictions, while the axial charge is somewhat outside the experimental error bar. The electromagnetic radii of the protons, the magnetic radius of the neutron, and the axial radius are in excellent agreement with the measurements, while the neutron charge radius deviates from the experiment.
WOS关键词GENERALIZED PARTON DISTRIBUTIONS ; ELECTROMAGNETIC FORM-FACTORS ; VIRTUAL COMPTON-SCATTERING ; SQUARED 4-MOMENTUM TRANSFERS ; SPIN ASYMMETRIES ; POLARIZATION TRANSFER ; ELECTRON-SCATTERING ; HADRON STRUCTURE ; PROTON ; NEUTRON
资助项目Institute of Modern Physics, Chinese Academy of Sciences[E129952YR0] ; Chinese Academy of Sciences Presidents International Fellowship Initiative[2021PM0023] ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences[ZDB-SLY-7020] ; Natural Science Foundation of Gansu Province, China[20JR10RA067] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB34000000] ; Department of Energy[DE-FG02-87ER40371] ; Department of Energy[DE-SC0018223] ; National Energy Research Scientific Computing Center (NERSC) , a U.S. Department of Energy Office of Science User Facility[DE-AC02-05CH11231] ; Institute of Modern Physics, Chinese Academy of Sciences
WOS研究方向Astronomy & Astrophysics ; Physics
语种英语
出版者AMER PHYSICAL SOC
WOS记录号WOS:000725005800002
资助机构Institute of Modern Physics, Chinese Academy of Sciences ; Chinese Academy of Sciences Presidents International Fellowship Initiative ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Natural Science Foundation of Gansu Province, China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Department of Energy ; National Energy Research Scientific Computing Center (NERSC) , a U.S. Department of Energy Office of Science User Facility ; Institute of Modern Physics, Chinese Academy of Sciences
源URL[http://119.78.100.186/handle/113462/140102]  
专题中国科学院近代物理研究所
通讯作者Xu, Siqi; Mondal, Chandan; Lan, Jiangshan; Zhao, Xingbo; Li, Yang; Vary, James P.
作者单位1.Univ Chinese Acad Sci, Sch Nucl Phys, Beijing 100049, Peoples R China
2.Lanzhou Univ, Lanzhou 730000, Peoples R China
3.Chinese Acad Sci, Inst Modern Phys, CAS Key Lab High Precis Nucl Spect, Lanzhou 730000, Peoples R China
4.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China
5.Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA
6.Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Peoples R China
推荐引用方式
GB/T 7714		 Xu, Siqi,Mondal, Chandan,Lan, Jiangshan,et al. Nucleon structure from basis light-front quantization[J]. PHYSICAL REVIEW D,2021,104(9):24.
APA Xu, Siqi,Mondal, Chandan,Lan, Jiangshan,Zhao, Xingbo,Li, Yang,&Vary, James P..(2021).Nucleon structure from basis light-front quantization.PHYSICAL REVIEW D,104(9),24.
MLA Xu, Siqi,et al."Nucleon structure from basis light-front quantization".PHYSICAL REVIEW D 104.9(2021):24.

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来源：近代物理研究所

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