Baryon Electromagnetic Form Factors at BESIII

The BESIII experiment is running on the double-ring symmetric collider, BEPCII, at center-of-mass energies between 2.0 and 4.6 GeV. The collected data can be analyzed to measure the baryon electromagnetic form factors in direct e+e−-annihilation and in initial state radiation processes. In this paper, results on e+e−→pp‾ and preliminary results on e+e−→ΛΛ‾ based on the data collected by BESIII in 2011 and 2012 are presented. Preliminary results on the proton electromagnetic form factors measurement are also reported based on the analysis of e+e−→pp‾γ with 7 data samples at center-of-mass energies between 3.773 and 4.6 GeV.