Charge Density of the Neutron

Details Charge Density of the Neutron Charge Density of the Neutron

2007-05-16

arxiv.org/abs/0705.2409v3

Phys.Rev.Lett.99:112001,2007

Physics

Nuclear Physics

Nuclear Theory

7 pages, three figures The replacement mainly concerns correcting an error made in computing the proton up and down quark dens

Scientific paper

10.1103/PhysRevLett.99.112001

A model-independent analysis of the infinite-momentum-frame charge density of partons in the transverse plane is presented for the nucleon. We find that the neutron parton charge density is negative at the center, so that the square of the transverse charge radius is positive, in contrast with many expectations. Additionally, the proton's central u quark charge density is larger than that of the d quark by about 70 %. The proton (neutron) charge density has a long range positively (negatively) charged component.

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