Flavor decomposition of the nucleon electromagnetic form factors at low $Q^2$

Understand

The spatial distribution of charge and magnetization within the proton is encoded in the elastic form factors.

• These have been precisely measured in elastic electron scattering, and the combination of proton and neutron form factors allows for the separation of the up- and down-quark contributions.
• In this work, we extract the proton and neutron form factors from world's data with an emphasis on precise new data covering the low-momentum region, which is sensitive to the large-scale structure of the nucleon.
• From these, we separate the up- and down-quark contributions to the proton form factors.