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The Lead Radius Experiment ("PREX") uses the parity violating weak neutral interaction to probe the neutron distribution in a heavy nucleus, namely 208Pb, thus measuring the RMS neutron radius to 1% accuracy, which has an important impact on nuclear theory.

Spokespersons: Krishna Kumar (U. Mass), Paul Souder (Syracuse), Robert Michaels (JLab), Guido Urciuoli (INFN).

Physics Info

• 2005 Latest Proposal Update (Postscript), and Same, PDF.
• 2002 Earlier Proposal Update
• Original Proposal (Dec 1999).
• PREX Official Web Site (has more physics info)

Status and Plans

• A shutdown work list   (updated Dec 2009)   Schedule is March 2010 !
• An index of Meeting Minutes and Talks
• more details on status

External Links

• PREX experiment web site
• Parity in Hall A
• Hall A
• Hall A Logbook
• 2008 PREX Workshop

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