Charge Densities of the Neutron and Proton

Gerald A. Miller
Phys. Rev. Lett. 99, 112001 – Published 13 September 2007

Abstract

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 d quark charge density is larger than that of the u quark by about 30%. The proton (neutron) charge density has a long range positively (negatively) charged component.

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  • Received 18 May 2007

DOI:https://doi.org/10.1103/PhysRevLett.99.112001

©2007 American Physical Society

Authors & Affiliations

Gerald A. Miller

  • Department of Physics, University of Washington, Seattle, Washington 98195-1560, USA

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Issue

Vol. 99, Iss. 11 — 14 September 2007

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