Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10726307 | Progress in Particle and Nuclear Physics | 2012 | 6 Pages |
Abstract
As a consequence of the peculiar shape of the charge density Ï(r)-which is close to an exponential one-the value of the proton charge rms-radius Rch determined from electron scattering data depends strongly on the density Ï(r) at large radii r. This density is poorly constrained by scattering data. Supplementing the (e, e) data with the large-rshape of Ï(r) resulting from the Fock components (n+Ï,â¦) which dominate the large-r behavior produces a more reliable value for Rch. The resulting radius agrees with the one we previously extracted from (e, e) and with the value determined from electronic Hydrogen, but disagrees with the one recently obtained from muonic Hydrogen. The origin of the discrepancy is not understood.
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Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
Ingo Sick,