Probing the internal structure of baryons

Guangshun Huang; Rinaldo Baldini Ferroli; BESIII Collaboration

doi:10.1093/nsr/nwab187

Probing the internal structure of baryons

Natl Sci Rev. 2021 Oct 14;8(11):nwab187. doi: 10.1093/nsr/nwab187. eCollection 2021 Nov.

Authors

Guangshun Huang¹, Rinaldo Baldini Ferroli²; BESIII Collaboration

Affiliations

¹ Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China.
² INFN Laboratori Nazionali di Frascati, I-00044 Frascati, Italy.

Abstract

Electromagnetic form factors are fundamental observables that describe the electric and magnetic structure of hadrons and provide keys to understand the strong interaction. At the Beijing Spectrometer (BESIII), form factors have been measured for different baryons in the time-like region for the first time or with the best precision. The results are presented with examples focused on but not limited to the proton/neutron, the Λ, with a strange quark, and the Λ _c , with a charm quark.

Keywords: abnormal production; baryon structure; form factor; threshold effect.