Measurement of the Neutron Radius of [superscript 208]Pb through Parity Violation in Electron Scattering
Name
Abrahamyan-2012-Measurement of the Neutron Radius.pdf
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Author(s)
Deconinck, Wouter
Huang, J.
Kelleher, Aidan Michael
Kowalski, Stanley B.
Muangma, Navaphon
Sulkosky, Vincent
Alternative Title
Measurement of the Neutron Radius of 208Pb through Parity Violation in Electron Scattering
Date Issued
March 2012
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Abrahamyan, S. et al. “Measurement of the Neutron Radius of ^{208}Pb Through Parity Violation in Electron Scattering.” Physical Review Letters 108.11 (2012): Web. 4 May 2012. © 2011 American Physical Society
Version
Final published version
Abstract
We report the first measurement of the parity-violating asymmetry A[subscript PV] in the elastic scattering of polarized electrons from [superscript 208]Pb. A[subscript PV] is sensitive to the radius of the neutron distribution (R[subscript n]). The result A[subscript PV]=0.656±0.060(stat)±0.014(syst) ppm corresponds to a difference between the radii of the neutron and proton distributions R[subscript n]-R[subscript p]=0.33[subscript -0.18][superscript +0.16] fm and provides the first electroweak observation of the neutron skin which is expected in a heavy, neutron-rich nucleus.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1103/PhysRevLett.108.112502
