• Physicist, Argonne National Laboratory
• Research group: Medium Energy Physics
• Research home page: www.jlab.org/~johna
• phone: (630)252-3619
• fax: (630)252-3903
• e-mail: johna@anl.gov

Research interests

Nucleon structure: Involved in a series of measurements of nucleon structure via elastic and inelastic electron scattering to measure the nucleon structure functions and study quark-hadron duality. Performed detailed analysis of the discrepancy between Rosenbluth and Polarization transfer measurements of the proton form factor, as well as the effects of higher-order radiative corrections (two-photon exchange and Coulomb distortion). Performed "Super-Rosenbluth" measurement to more precisely understand the discrepancy. Have follow-up measurements approved at Jefferson Lab and Novosibirsk to study the effect of two-photon exchange corrections to the form factors.

Nuclear structure functions: Measured high-x scattering from nuclei, aimed at isolating the short-range structure of the nucleus and understanding modification to nucleon structure within the nuclear medium. Performed duality studies with high-precision nucleon and nuclear structure function measurements.  Recently compleated experiment to measure the EMC effect at large x, especially for light nuclei.

Color Transparency: Involved in SLAC and JLab studies of color transparency in A(e,e'p) reactions, the recent JLab Hall B measurement of color transparency in rho electroproduction, and JLab Hall C measurement of transparency in pion electroproduction.

The majority of my work is performed in Hall C and Hall A at Jefferson lab, though I am (or have been) involved in Hall B experiments as well as experiments at MIT-Bates, SLAC, HERMES at DESY, Fermilab, and Novosibirsk.

Biographical sketch

• 2005-present    Physicist, Argonne National Laboratory, Argonne, IL
• 2001-2005        Assistant Physicist, Argonne National Laboratory, Argonne, IL
• 1998-2000        Postdoctoral appointee, Argonne National Laboratory, Argonne, IL
• 1998                 Ph.D., Physics, California Institute of Technology, Pasadena, CA
• 1990                 B.S., with distinction, Applied Mathematics, Engineering, and Physics, University of Wisconsin-Madison.

Awards

• 2005                 Presidential Early Career Award for Science and Engineering (PECASE)
• 2005                 U. S. DOE Office of Science Early Career Scientist and Engineer Award
• 2000                 APS/DNP Dissertation Award in Nuclear Physics
• 1991                 NSF Graduate Research Fellowship

Professional Activities

Member of the American Physical Society
• 2008                 Member, Hall C 12 GeV committee/SHMS collaboration committee
• 2008                 Organizer for ECT* workshop on Hadron Electromagnetic Form Factors
• 2007-present    Member, Jefferson Lab 12 GeV Steering Committee
• 2006-2008        Chair, Jefferson Lab Hall A Coordinating Committee
• 2005-2008        Argonne National Laboratory Outreach Initiative
• 2004-2006        Board of Directors, Jefferson Lab Users' Group
• 2004                 Local organizing committee, 2004 October DNP meeting
• 2003-2004        Steering Committee, Hall C at Jefferson Lab
• 2002-2004        Editorial board for preliminary and final JLab 12 GeV Conceptual Design Report
• 2001                 Non-oscillation physics working group for the Fermilab proton driver study

Selected Publications (Full list from SPIRES)

• "Neutron negative central charge density: An inclusive-exclusive connection",
  G. A. Miller and J. Arrington, Phys. Rev. C 032201(R) (2008)
  Phys. Rev. Focus article
   
• "Probing Cold Dense Nuclear Matter",
  R. Subedi, et al., Science 320, 1476 (2008)
   
• "The Proton Elastic Form Factor Ratio $\mu_p G^p_E/G^p_M$ at Low Momentum Transfer",
  G. Ron, et al., Phys. Rev. Lett. 99:202002 (2007)
   
• "Global analysis of proton elastic form factor data with two-photon exchange corrections",
  J. Arrington, W. Melnitchouk and J. Tjon, Phys. Rev. C. 76:035205 (2007)
   
• "Precise determination of low-Q nucleon electromagnetic form factors and their impact on parity-violating e-p elastic scattering",
  J. Arrington and I. Sick, Phys. Rev. C. 76:035201 (2007)
   
• "Nucleon and pion electromagnetic form factors",
  J. Arrington, C. D. Roberts, and J. M. Zanotti, J. Phys. G 34, S23 (2007)
   
• "Precision Measurements of the Nucleon Strange Form Factors at Q^2 ~ 0.1 GeV^2",
  A. Acha, et al., Phys. Rev. Lett. 98:032301 (2007)
   
• "Determination of the Charged Pion Form Factor at Q^2=1.60 and 2.45 (GeV/c)^2",
  T. Horn, et al., Phys. Rev. Lett. 97:192001 (2006)
   
• "Low-Q scaling, duality, and the EMC effect",
  J. Arrington, R. Ent, C. E. Keppel, J. Mammei, and I. Niculescu, Phys. Rev. C 73:035205 (2006)
   
• "Precision Rosenbluth measurement of the proton elastic form-factors",
  I. A. Qattan, et al., Phys. Rev. Lett. 94:142301 (2005)
   
• "Extraction of two-photon contributions to the proton form factors",
  J. Arrington, Phys. Rev. C 71:015202 (2005)
   
• "Coulomb distortion in high-Q^2 elastic e-p scattering",
  J. Arrington and I. Sick, Phys. Rev. C 70:028203 (2004)
   
• "Evidence for two-photon exchange contributions in electron-proton and positron-proton elastic scattering",
  J. Arrington, Phys. Rev. C 69:032201(R),  (2004)
   
• "Implications of the discrepancy between proton form factor measurements",
  J. Arrington, Phys. Rev. C 69:022201(R),  (2004)
   
• "How well do we know the electromagnetic form factors of the proton?",
  J. Arrington, Phys. Rev. C 68:034325, (2003)
   
• "Hadrons in the Nuclear Medium",
  M. M. Sargsian, et al., J. Phys. G 29:R1, (2003)
   
• "x- and xi-scaling of the Nuclear Structure Function at Large x",
  J. Arrington, et al., Phys. Rev. C 64:014602, (2001)
   
• "Inclusive Electron-Nucleus Scattering at Large Momentum Transfer",
  J. Arrington, et al., Phys. Rev. Lett. 82:2056, (1999)
   
• "Inclusive electron scattering from nuclei at x>1 and high Q^2",
  J. Arrington, Ph.D. Thesis (1998)
   
• "Inclusive electron scattering from Nuclei at x approximately 1",
  J. Arrington, et al., Phys. Rev. C 53:2248, (1996)
   

Approved Experiments

E01-001: "New Measurement of (G_E/G_M) for the Proton",
R. E. Segel and J. Arrington, spokespersons. Approved for 10 days in Hall A with an A- scientific rating.
view HTML version or download postscript version of E01-001 proposal.
Experiment ran May 2002. Results published in Physical Review Letters

E02-019: "Inclusive Scattering from Nuclei at x>1 and High Q^2 with a 6 GeV Beam",
J. Arrington, D. B. Day, B. W. Filippone, and A. F. Lung, spokespersons. Approved for 28 days in Hall C with an A- scientific rating
view HTML version or download postscript version of the E02-019 proposal.
Experiment ran June-November 2004

E03-103 (was E00-101): "A Precise Measurement of the Nuclear Dependence of Structure Functions in Light Nuclei",
J. Arrington, spokesperson. Approved for 10 days in Hall C with a B+ scientific rating.
view HTML version or download postscript version of original E00-101 proposal.
download postscript version of jeopardy resubmission (E03-103)
Experiment ran June-November 2004

VEPP-3 Proposal: "Two-photon exchange and elastic scattering of electrons/positrons on the proton",
J. Arrington and D. Nikolenko, spokespersons; Proposal for measurement at the VEPP-3 ring in Novosibirsk (2004).
download postscript or pdf version the proposal.
Engineering run, May-July 2007.

E04-116: "Beyond the Born approximation: A precise comparison of positron-proton and electron-proton elastic scattering in CLAS",
W. Brooks, J. Arrington, K. Joo, B. Raue, A. Afanasev, L. Weinstein, spokespersons.  Approved for 5 days in Hall B with an A- scientific rating.
download postscript or pdf version the proposal. files are large - 30MB and 16MB
Successful engineering run in Oct 2006 led to full proposal (E07-005)

E05-017: "A Measurement of two-photon effects in upolarized electron-proton scattering",
J. Arrington, spokesperson.  Approved for 13 days in Hall C with an A- scientific rating.
download postscript or pdf version of the proposal (or the older PAC 26 versions: postscript or pdf).
Experiment ran May-July 2007

E12-06-105: "Inclusive Scattering from Nuclei at x>1 in the quasielastic and deeply inelastic regimes",
J. Arrington, D. B. Day, spokespersons.   Approved by PAC30.
download postscript or pdf version the proposal.

E07-005: "Beyond the Born approximation: A precise comparison of positron-proton and electron-proton elastic scattering in CLAS",
W. Brooks, J. Arrington, K. Joo, B. Raue, A. Afanasev, L. Weinstein, spokespersons.  Approved by PAC31 with an A scientific rating.
download pdf version the proposal.

E12-07-107: "Precision Measurement of the Proton Elastic Cross Section at High Q^2",
B. Moffit, J. Arrington, S. Gilad, and B. Wojtsekhowski, spokespersons.   Approved by PAC32.
download postscript or pdf version the proposal.

E08-007: "Measurement of the Proton Elastic Form Factor Ratio at Low Q^2",
G. Ron, J. Arrington, R. Gilman, A. Sarty, D. W. Higinbotham, D. Day, spokespersons.  Approved by PAC33 with an A- scientific rating.
download pdf version the proposal. The first part of the experiment, using a recoil polarimeter, ran in Summer 2008.

E08-014: "Three-nucleon short range correlation studies in inclusive scattering for 0.8 < Q^2 < 2.8 GeV^2",
J. Arrington, D. B. Day, D. Higinbotham, and P. Solvignon, spokespersons.  Approved by PAC33 with an A- scientific rating.
download pdf version the proposal.

E09-006: "The Neutron Electric Form Factor at Q^2 up to 7 (GeV/c)^2 from the Reaction ^2H(\vec{e},e'\vec{n})^1H via Recoil Polarimetry",
A. Semenov, B. Anderson, J. Arrington, S. Kowalski, R. Madey, and B. Plaster spokespersons.  Approved by PAC34

PR09-010: "Precision measurement of the isospin dependence in the 2N and 3N short range correlation region",
J. Arrington, D. B. Day, and P. Solvignon, spokespersons.  Deferred with regret by PAC34

PhD Students

• Issam A. Qattan: Northwestern University, 2001-2005
  JLab E01-001: Precision Rosenbluth Measurements of the Proton Elastic Electromagnetic Form Factors and Their Ratio at Q^2=2.64,3.20, and 4.10 GeV^2


• James Johnson: Northwestern University, 2005-present
  JLab E05-017: Two-photon effects in unpolarized elastic electron-proton scattering

Hall C Software

The "OSCAR" document (how to run the Hall C Analysis Engine) - OSCAR_jan99.html

SIMC (the Hall C Monte Carlo) primer - View HTML (OLD VERSION!!)  Download PostScript (NEW VERSION!!)

Archive of SIMC releases - SIMC Sources

Additional SIMC documentaion - SIMC Stuff

JLab experiment E89-008 (my thesis)

My Caltech Home Page (x>1)

THESIS.HTML

THESIS.PS