Nucleon Electromagnetic Form Factors Measurements at BESIII

被引：0

作者：

Lin, Dexu ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China

来源：

NUCLEAR AND PARTICLE PHYSICS PROCEEDINGS | 2022年 / 318卷

关键词：

Electromagnetic form factors; Nucleon; Direct annihilation; Initial-state-radiation; BESIII; ANNIHILATION;

D O I：

10.1016/j.nuclphysbps.2022.09.024

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

Electromagnetic form factors provide fundamental information to reveal the internal structure and dynamincs of nu-cleons. Using the energy scan data collected by BESIII experiment on BEPCII collider, the Born cross section of e+e--, pp over bar and e+e--, nn over bar , and the proton and neutron electromagnetic form factors are measured at center-of-mass energies between 2.0 and 3.08 GeV, through the e+e- direct annihilation process. Through the initial-state-radiation process, the proton electromagnetic form factors are also measured from the pp over bar threshold to 3.0 GeV with the large data sets collected at center-of-mass energy between 3.773 and 4.6 GeV, while the Born cross section of e+e--, pp over bar is measured up to 3.8 GeV.

引用

页码：117 / 121

页数：5

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