Dirac and Pauli form factors of nucleons using nonlocal chiral effective Lagrangian

Fangcheng He; Ping Wang

doi:10.1088/1674-1137/41/11/114106

Chinese Physics C> 2017, Vol. 41> Issue(11) : 114106 DOI: 10.1088/1674-1137/41/11/114106

Dirac and Pauli form factors of nucleons using nonlocal chiral effective Lagrangian

Fangcheng He ^1,2,, ,
Ping Wang ^1,3,,

1.
Institute of High Energy Physics, Beijing 100049, China
2.
University of Chinese Academy of Sciences, Beijing 100049, China
3.
Theoretical Physics Center for Science Facilities(TPCSF), Chinese Academy of Sciences, Beijing 100049, China

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Abstract：
Dirac and Pauli form factors are investigated in the relativistic chiral effective Lagrangian. The octet and decuplet intermediate states are included in the one-loop calculation. The 4-dimensional regulator is introduced to deal with the divergence. Different from the non-relativistic case, this 4-dimensional regulator is generated from the nonlocal Lagrangian with the gauge link, which guarantees local gauge invariance. As a result, additional diagrams appear which ensure electric charge 1 and 0 for proton and neutron respectively. The obtained Dirac and Pauli form factors of the nucleons are all reasonable up to relatively large Q².
- chiral effective lagrangian ,
- nonlocal lagrangian ,
- form factors

References

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Fangcheng He and Ping Wang. Dirac and Pauli form factors of nucleons using nonlocal chiral effective Lagrangian[J]. Chinese Physics C, 2017, 41(11): 114106. doi: 10.1088/1674-1137/41/11/114106

Fangcheng He and Ping Wang. Dirac and Pauli form factors of nucleons using nonlocal chiral effective Lagrangian[J]. Chinese Physics C, 2017, 41(11): 114106. doi: 10.1088/1674-1137/41/11/114106 shu

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Received: 2017-05-15
Revised: 2017-08-21

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Supported by National Natural Science Foundation of China (11475186) and Sino-German CRC 110 (NSFC 11621131001)

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沈阳化工大学材料科学与工程学院沈阳 110142

Dirac and Pauli form factors of nucleons using nonlocal chiral effective Lagrangian

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Dirac and Pauli form factors of nucleons using nonlocal chiral effective Lagrangian

Corresponding author: Fangcheng He,

Corresponding author: Ping Wang,

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