Document Type
Article
Department/Program
Physics
Journal Title
Physical Review Letters
Pub Date
2012
Volume
108
Issue
11
Abstract
We report the first measurement of the parity-violating asymmetry A(PV) in the elastic scattering of polarized electrons from Pb-208. APV is sensitive to the radius of the neutron distribution (R-n). The result A(PV) = 0.656 +/- 0.060(stat) +/- 0.014(syst) ppm corresponds to a difference between the radii of the neutron and proton distributions R-n - R-p = 0.33(-0.18)(+0.16) fm and provides the first electroweak observation of the neutron skin which is expected in a heavy, neutron-rich nucleus.
Recommended Citation
Abrahamyan, S.; Shahinyan, A.; Reimer, P. E.; Armstrong, D. S.; Averett, Todd; Deconinck, W.; Hoskins, J.; Jensen, E.; Leckey, J.; and Lee, J. H., Measurement of the Neutron Radius of Pb-208 through Parity Violation in Electron Scattering (2012). Physical Review Letters, 108(11).
10.1103/PhysRevLett.108.112502
DOI
10.1103/PhysRevLett.108.112502
