PARITY   EXPERIMENTS   IN   HALL   A

This file:   hallaweb.jlab.org/parity

• Now about to do the PREX experiment !   Please   SIGN   UP   FOR   SHIFTS
• We recently did the   HAPPEX     and PVDIS   experiments.

• HAPPEX  III   [e05109]   the high Q² HAPPEX point   (Status: Ran in Fall 2009).
• HAPPEX   II   [e99115]   (proposal in postscript)   -- a low Q² continuation of the Hall A Parity Experiment to study strangeness in the proton.   (Status: Completed, published.   Ran in 2004 and 2005)
• The low Q² He4 parity experiment [e00114]   proposal   (postscript) or the same in pdf format. (Status: Completed, A rating, published.   Ran in 2004 and 2005.
• ²⁰⁸Pb   Radius   Experiment   (PREX -- e06002). (Status: Re-approved after jeopardy, 2006, A rating.   Scheduled start: March 2010)
• The PVDIS (E05-007 / E08-011) experiment for deep inelastic scattering at 6 GeV. (Ran in Fall 2009.)
• Parity-violation for the 12 GeV upgrade.
  • 12-GeV Moller Experiment (Status: Approved in PAC34, A rating).
  • Deep Inelastic Scattering Parity (SOLID). (Status: Conditionally approved in PAC34, re-submitted with improvements for PAC35.).
• Older, deferred proposals
  • A high-Q² Parity proposal PR-06-002 at PAC29   (Deferred).
  • The high Q² He4 parity proposal   (postscript) or the same in pdf format.  (Status: Deferred in Jan 2001.)
  • Pion Photoproduction   which aims to measure the weak coupling hpinn.   (Status: Deferred in Jan 2001.)
  • Res-Parity :   Parity Violation in the Resonance Region. (Status: Deferred 3 times.)

Additional resources:

• Happex Collaboration meetings notes :
  • (New, Jan 2010)   Run-related meetings for PREX
  • Older meetings

• HAPPEX archival paper   K.A. Aniol et al., Phys. Rev. C 69, 065501 (2004).   postscript   and   PDF format.
• HAPPEX Collaboration Web Page.
• Announcements of general interest for Hall A parity should be sent to e-mail list   halla_parity@jlab.org   whose messages are archived here.. Here are instructions on how to subscribe to the list.
• Some links for experiments related to Hall A program.
• Our ROOT/C++ analysis package ``Pan'' (Parity Analyzer).
• Writeup about HAPPEX   Q² measurements in various years:

   2005   ;   2004   ;   1999