The Thomas Jefferson National Accelerator Facility (Jefferson Lab) is a national physics user facility managed by the Southeastern Universities Research Association (SURA), Inc., for the U.S. Department of Energy (DOE) under contract DE-AC05-84ER40150.

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Report of the

Jefferson Laboratory

Program Advisory Committee

PAC 25

Meeting of January 12 – 16 2004

INSERT LETTER FROM LEEMANN

Letter from the PAC Chairman

Introduction

General Overview

Recommendations

Tables

Totals for PAC 4-25

	Experiments Recommended for Approval	Experiments Recommended for Conditional Approval	Totals
Experiments	143	8	151
Authors	1096	36	1132
Institutions	184	3	187
Countries	30		30

Approved Experiments Totals by Physics Topics

Topic	Number	Hall A	Hall B	Hall C
Nucleon and Meson Form Factors & Sum Rules	24	11	4	9
Few Body Nuclear Properties	29	18	6	5
Properties of Nuclei	28	7	11	10
N* and Meson Properties	44	6	30	8
Strange Quarks	18	4	12	2
TOTAL	143	46	63	34

Approved Days and Conditionally Approved Experiments

				Approved Experiments										Conditionally
	Hall		# Expts Completed (full/partial)				Days Run		No. Exps in Queue		Days to be Run		Approved Experiments
A		28			1x .15	502.60		21		356.3		3
B		35			/14´.5 3´.40 2´.76	418.50		28		270.9		2
C		18			/1´.5 1 ´.33 1 x 65	435.9		18		265.7		3
Total		81			/ 23.00	1357		67		892.9		8

APPENDICES

A. PAC 25 Membership

B. Charge to PAC 25

C. PAC 25 Recommendations

D. PAC 25 Individual Proposal Reports

E. PAC 25 Individual Letters-of-Intent Reports

F. Approved Experiments, PACs 4-25, Grouped by Physics Category

(To access Appendix F, go to http://www.JLab.org/exp_prog/PACpage/)

Appendix A

PAC 25 Membership

BERTHOLD SCHOCH (Chair) Universitaet Bonn, Physikalisches Institut Nussallee 12, Room 142 D 53115 Bonn, Germany Phone/Fax: 49 228 73 2344/7869 schoch@physik.uni-bonn.de	FRITZ KLEIN Physikalisches Institut Universität Bonn Nussallee 12, 53115 Bonn Germany Phone/Fax: 49 228 73 2341/7869 klein@physik.uni-bonn.de
NICOLA BIANCHI INFN LNF Via E. Fermi 40 00044-Frascati (Rome), Italy Phone/Fax: 39-06-94032320/2559 nicola.bianchi@lnf.infn.it	SERGE KOX Laboratoire de Physique Subatomique et De Cosmologie (IN2P3/CNRS-UJF) 53 Avenue Des Martyrs 38026 Grenoble-Cedex, France Phone/Fax: 33 4 76 28 41 55/4004
PETER BOSTED S.L.A.C. MS 44 2575 Sand Hill Road Menlo Park, CA 94025 Phone/Fax: (650) 926-2319/725-6544 bosted@slac.stanford.edu	PETER KROLL Fachbereich Physik Universitaet Wuppertal,Gaustrasse 20 D-42097 Wuppertal Phone/Fax: +49 202 439 2620/3860 kroll@physik.uni-wuppertal.de
ALEXANDER DONNACHIE The University of Manchester Theoretical Physics Group, Oxford Road The Shuster Laboratory Manchester, UK M13 9PL Phone/Fax: 44 161 275-4190/4218 Sandy.donnachie@man.ac.uk	JEN-CHIEN PENG 401B Loomis, Dept. of Physics University of Illinois at Urbana-Champaign 1110 W. Green St. Urbana, Il 61801-3080 Phone/Fax: (217) 244-6039/333-1215 jcpeng@uiuc.edu
T. WILLIAM DONNELLY Massachusetts Institute of Technology Center for Theoretical Physics, 60300 77 Massachusetts Avenue Cambridge, MA 02139 Phone/Fax: (617)253-4847/8674 Donnelly@lns.mit.edu	ANDREW SANDORFI Physics Dept. LEGS Group Brookhaven National Lab Bldg. 510A Upton, NY 11973-5000 Phone/Fax: (516) 344-7951/2049 sandorfi@bnl.gov
WILLIAM (BILL) DUNWOODIE SLAC 2575 Sand Hill Road Menlo Park, CA 94025 Phone/FAX: (650) 926-2729/926-4178 smd@slac.stanford.edu	PAUL STOLER Rensselear Polytechnic Institute Dept. of Physics Troy, NY 12180 Phone/Fax: (518) 2768388/6680
EDDY JANS NIKHEF P.O. Box 41882 1009 DB Amsterdam The Netherlands Phone/Fax: 31 20 5922085/5155 eddy@nikhef.nl

Appendix B

Charge to PAC 25

APPENDIX C

PAC 24 Recommendations

Class*/Grade/Days

A/B+/5	PR-04-001	Measurements of F2 and R on the Nuclear Targets in Resonance Region
A/B+/15	PR-004-002	Hadronization in Nuclei by Deep Inelastic Electron Scattering
D	PR-004-003	The Neutron Electric Form Factor at Higher Q^2 up to 4.0 (GeV/c)^2from the reaction ^2H(e,e'n)^1H via Recoil Polarimetry.
D	PR-04-004	Search for Exotic Pentaquark Θ^++, Θ*^++ and Θ^+ in Hall C.
A/A/42	PR-04-005	Search for New Forms of Hadronic Matter in Photoproduction
	PR-04-006	WITHDRAWN
A/B+/16	PR-004-007	Precision Measurement of the Electroproduction of pi0 Near Threshold: A Test of Chiral QCD Dynamics
D	PR-004-008	Measurements of Target Single-Spin Asymmetry in Elastic ep^↑
D	PR-004-009	Measurement of the Born-Forbidden Recoil Proton Normal Polarization in Electron-Proton Scattering
A/A/20	PR-004-010	Search for Exotic Cascades with CLAS Using an Untagged Virtual Photon Beam
D	PR-04-011	Photoproduction of Θ^+ via the gamma plus deuteron → Θ^+ Λ reaction
A/A-/7	PR-04-012	High Resolution Study of the 1540 Exotic State
R	PR-04-013	Measurement of the Nuclear Dependence of the EMC Effect at Large x
D	PR-04-014	Measurement of GE^p/GM^p using elastic polarized up to Q^2 = 3.50 (GeV/c)^2
D	PR-04-015	Precision Measurement of Longitudinal and Transverse Response Functions of Quasi-Elastic Electron Scattering in the Momentum Transfer Range 0.55 GeV/c < q < 0.9 GeV/c
D	PR-04-016	Search for the Ξ pentaquark
A/A-/0	PR-04-017	Study of Pentaquark States in Photoproduction off Protons
A/A-/36	PR-04-018	Elastic Electron Scattering Off ^3He and ^4He at Large Momentum Transfers
A/B+/18	PR-04-019	Measurement of the Two-Photon Exchange Contribution in ep Elastic Scattering Using Recoil Polarization
D	PR-04-020	A Measurement of Two-Photon Effects in Unpolarized Electron-proton Scattering
A/A/25	PR-04-021	Spectroscopy of Exotic Baryons with CLAS: Search for Ground and Excited States

* A=Approve, C=Conditionally Approve, D=Defer, DR= Defer with Regret, R=Reject

Appendix D

Individual Proposal Report

Proposal: PR-04-001

Scientific Rating: B+

Title: Measurements of F₂ and R on the Nuclear Targets in Resonance Region

Spokespersons: C. Keppel

Recommendation:

Individual Proposal Report

Proposal: PR-04-002

Scientific Rating: B+

Title: Hadronization in Nuclei by Deep Inelastic Electron Scattering

Spokespersons: K. Wang

Motivation:

Recommendation:

Individual Proposal Report

Proposal: PR-04-003

Scientific Rating:

Title: The Neutron Electric Form Factor at Higher Q² up to 4.0 (GeV/c)²

Spokespersons: R. Madey

Motivation:

Recommendation:

Individual Proposal Report

Proposal: PR-04-004

Scientific Rating:

Title: Search for Exotic Pentaquark Θ⁺⁺, Θ*⁺⁺ and Θ⁺ in Hall C

Spokespersons: H. Gao

Motivation:

Recommendation:

Individual Proposal Report

Proposal: PR-04-005

Scientific Rating: A

Title: Search for New Forms of Hadronic Matter in Photoproduction

Spokespersons: P. Eugenio

Motivation:

Recommendations:

Individual Proposal Report

Proposal: PR-04-006

Scientific Rating: WITHDRAWN

Title:

Spokespersons:

Individual Proposal Report

Proposal: PR-04-007

Scientific Rating: B+

Title: Precision Measurement of the Electroproduction of Pi0 Near Threshold: A Test of Chiral QCD Dynamics

Spokespersons: R. Lindgren

Motivation:

Recommendation:

Individual Proposal Report

Proposal: PR-04-008

Scientific Rating:

Title: Measurements of Target Single-Spin Asymmetry in Elastic ep^↑ Scattering

Spokespersons: X. Jiang

Motivation:

Recommendation:

Individual Proposal Report

Proposal: PR-04-009

Scientific Rating:

Title: Measurement of the Born-Forbidden Recoil Proton Normal Polarization in Electron-Proton Elastic Scattering

Spokespersons: D. Mack

Motivation:

Recommendation:

Individual Proposal Report

Proposal: PR-04-010

Scientific Rating: A

Title: Search for Exotic Cascades with CLAS Using an Untagged Virtual Photon Beam

Spokespersons: E. Smith

Motivation:

Recommendation:

Individual Proposal Report

Proposal: PR-04-011

Scientific Rating:

Title: Photoproduction of Θ⁺ via the gamma plus deuteron → Θ⁺ Λ reaction

Spokespersons: S. Wood

Motivation:

Recommendation:

Individual Proposal Report

Proposal: PR-04-012

Scientific Rating: A-

Title: High Resolution Study of the 1540 Exotic State

Spokespersons: B. Wojtsekhowski

Motivation:

Recommendation:

Individual Proposal Report

Proposal: PR-04-013

Scientific Rating:

Title: Measurement of the Nuclear Dependence of the EMC Effect at Large x

Spokespersons: D. Gaskell

Motivation:

Recommendation:

Individual Proposal Report

Proposal: PR-04-014

Scientific Rating:

Title: Measurement of G_E^p/G_M^p using elastic polarized up to Q² = 3.50 (GeV/c)²

Spokespersons: X. Zheng

Motivation:

Recommendation:

Individual Proposal Report

Proposal: PR-04-015

Scientific Rating:

Title: Precision Measurement of Longitudinal and Transverse Response Functions of Quasi-Elastic Electron Scattering in the Momentum Transfer Range 0.55 GeV/c < q < 0.9 GeV/c

Spokespersons: S. Choi

Motivation:

Recommendation:

Individual Proposal Report

Proposal: PR-04-016

Scientific Rating:

Title: Search for the Ξ pentaquark

Spokespersons: J. Price

Motivation:

Recommendation:

Individual Proposal Report

Proposal: PR-04-017

Scientific Rating: S-

Title: Study of Pentaquark States in Photoproduction off Protons

Spokespersons: D. Weygand

Motivation:

Recommendation:

Individual Proposal Report

Proposal: PR-04-018

Scientific Rating: A-

Title: Elastic Electron Scattering Off ³He and ⁴He at Large Momentum Transfers

Spokespersons: G. Petratos

Motivation:

Recommendation:

Individual Proposal Report

Proposal: PR-04-019

Scientific Rating: B+

Title: Measurement of the Two-Photon Exchange Contribution in ep Elastic

Scattering Using Recoil Polarization

Spokespersons: R. Gilman

Motivation:

Recommendation:

Individual Proposal Report

Proposal: PR-04-020

Scientific Rating:

Title: A Measurement of Two-photon Effects in Unpolarized Electron- proton

Scattering

Spokespersons: J. Arrington

Motivation:

Recommendation:

Individual Proposal Report

Proposal: PR-04-021

Scientific Rating: A

Title: Spectroscopy of Exotic Baryons with CLAS: Search for Ground and Excited States

Spokespersons: M. Battaglieri

Motivation:

Recommendation:

Appendix E

Individual Letter of Intent Report

Letter of Intent:

Title:

Contact Person:

Individual Letter of Intent Report

Letter of Intent:

Title:

Contact Person:

Individual Letter of Intent Report

Letter of Intent:

Title:

Contact Person:

Individual Letter of Intent Report

Letter of Intent:

Title:

Contact Person:

Individual Letter of Intent Report

Letter of Intent:

Title:

Contact Person:

Individual Letter of Intent Report

Letter of Intent:

Title:

Contact Person:

Appendix F

Jefferson Lab Experiments, PAC 4-24, Grouped by Category

(To access Appendix F, go to http://www.JLab.org/exp_prog/PACpage/)