PARITY EXPERIMENTS IN HALL A

maintained by Robert Michaels rom@jlab.org last updated 17-Nov-2020

This file: hallaweb.jlab.org/parity

First results of PREX-II Ciprians DNP talk 2020.

JLab seminar results of PREX-II Kents JLab seminar 2020

The parity-violation physics program in Hall A at Jefferson Lab includes the following

C-REX PV Neutron Density of ⁴⁸Ca. (Status: Ran from Nov 2019 until Septempber 2020, it was approved by PAC40 fro 45 days with an A- rating)
PREX II PREX ran again with everything fixed. (Status: Ran in the summer of 2019, about to published. It had been approved by PAC38, 35 days, A rating.)
PREX-I : ²⁰⁸Pb Radius Experiment [e06002] (Status: Ran in Spring 2010. Published: Phys. Rev. Lett. 108 (2012) 112502.)
HAPPEX III [e05109] the high Q² HAPPEX point (Status: Ran in Fall 2009. Published: Phys. Rev. Lett. 108 (2012) 102001.)
HAPPEX II [e99115] (proposal in postscript) (Status: Ran 2004-2005, completed, published)
HAPPEX-I Strangeness in the proton (Status: Ran 1998-1999, published, see e.g. K.A. Aniol et al., Phys. Rev. C 69, 065501 (2004).)
The low Q² ⁴He Parity [e00114] (Status: Ran 2004-2005, completed, published)
The PVDIS (E05-007 / E08-011) experiment for deep inelastic scattering at 6 GeV. Ran in Fall 2009. Published: Main article & methods in Nature 506 (2014) 7486 67
Parity-violation for the 12 GeV upgrade.
- MOLLER Project (Status: Approved in PAC34, A rating)
  - DocDB for MOLLER Use JLAB CUE acct.
  - 12-GeV Moller Proposal and Moller web page
- Deep Inelastic Scattering Parity (SoLID) Proposal and SoLID web page (Status: Approved in PAC35, A rating.).
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:

Experiment Readiness Review May 17, 2017.
C-REX workshop March 2013
PREX web site
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. and a portal to subscribe.
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