• 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.

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