Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Measurements of Hadron Form Factors at BESIII   BEPCII is a symmetric $e^+e^-$-collider located in Beijing running at
center-of-mass energies between 2.0 and 4.6 GeV. This energy range allows the
BESIII-experiment to measure hadron form factors both from direct
$e^+e^-$-annihilation and from initial state radiation processes. In this
paper, results on $e^+e^-\rightarrow p\bar{p}$ based on data collected by
BESIII in 2011 and 2012 are presented. We also present preliminary results on
$e^+e^-\rightarrow \Lambda \bar{\Lambda}$ based on the same data samples at 4
center-of-mass energies. BESIII results obtained from $e^+e^-\rightarrow
\pi^+\pi^-$ using the initial state radiation technique at the center-of-mass
energy of 3.773 GeV are also summarized. Finally, expectations on the
measurement of baryon electromagnetic form factors from the BESIII high
luminosity energy scan in 2015 and from initial state radiation processes at
different center-of-mass energies are also reported.

15
The categories of this paper are: nucl-ex
23
The categories of this paper are: solv-int
14
The categories of this paper are: math-ph
12
The categories of this paper are: nucl-th
11
The categories of this paper are: hep-lat
22
The categories of this paper are: chao-dyn
6
The categories of this paper are: astro-ph
34
The categories of this paper are: chem-ph
19
The categories of this paper are: eess
35
The categories of this paper are: mtrl-th
26
The categories of this paper are: bayes-an
20
The categories of this paper are: acc-phys
2
The categories of this paper are: math
29
The categories of this paper are: funct-an
37
The categories of this paper are: supr-con
9
The categories of this paper are: nlin