Publications
Publication Information
| Title | Measurement of the Parity Violating Asymmetry inElastic Electron Scattering off 208Pb |
| Authors | Jonathan Wexler |
| JLAB number | JLAB-PHY-14-2025 |
| LANL number | (None) |
| Other number | DOE/OR/23177-4099 |
| Document Type(s) | (Thesis) |
| Supported by U.S. Naval Research: | No |
| Supported by Jefferson Lab LDRD Funding: | No |
| Funding Source: | Nuclear Physics (NP) |
|
Thesis A PHD thesis Advisor(s) : Robert Michaels (JLab) | |
| Publication Abstract: | The Lead Radius Experiment (PREX) was carried out in order to provide a model-independent measurement of the RMS radius sqrt(r-2/n) of the neutron distribution in the 208Pb nucleus. The parity-violating scattering asymmetry for longitudinally polarized 1.06 GeV electrons from an unpolarized 208Pb target was measured at Q2 = 0.00880 GeV2. This measurement was performed by the PREX collaboration in Hall A at Jefferson Laboratory in Newport News, VA, between March and June, 2010. The electron detectors used in this measurement were designed and fabricated by University of Massachusetts-Amherst and Smith College. The resulting parity-violating asymmetry was measured as APV = 656±60(stat.)±14(sys.) ppb. This asymmetry extrapolates to a difference in radii between the nuclear neutron and proton distributions of sqrt(r-2/n)-sqrt(r-2/p)=0.33^+0.16/?0.18 fm. |
| Experiment Numbers: | E06-002 |
| Group: | Hall A |
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| DOI: | |
| Accepted Manuscript: | |
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