The Hadronic Physics Group

at the   Physics Department   of the   College of William and Mary.

We conduct research in experimental nuclear and particle physics, with a focus on the structure and interactions of strongly interacting particles (hadrons). The group consists of four faculty members, two affiliated faculty who are staff scientists at Jefferson Lab, two post-doctoral fellows, ten graduate students, and several undergraduate students.

We are funded by the National Science Foundation, the Department of Energy, and the Jeffress Memorial Trust.

Many of our experiments use the intense 6 GeV electron beam at Jefferson Lab in nearby Newport News; we also do experiments at SLAC, MIT-Bates, and TRIUMF. Members of our group are spokespersons on many of these experiments. An overview of our research program can be found below, including links to more detailed information.


Mailing Address

Department of Physics
P.O. Box 8795
College of William and Mary
Williamsburg, VA 23187-8795

Phone - Area Code
(757)
Fax
(757)221-3540

David S. Armstrong

Professor

221-3489

e-mail

  WWW

Todd D. Averett

Associate Professor

221-3534

e-mail

  WWW

J. Michael Finn

Professor

221-3514

e-mail

  WWW

Keith A. Griffioen

Professor

269-3537

e-mail

  WWW

Roger D. Carlini

CEBAF Associate Professor

269-7123

e-mail

Allison F. Lung

Adjunct Professor

269-7446

e-mail

  WWW

Robert Feuerbach

Research Scientist

269-7254

e-mail

Sabine Fuchs

Laboratory Technician

221-3551

e-mail

  WWW

Klaus Grimm

Research Scientist

221-5522

e-mail

  WWW

Nathan Baillie

Graduate Student

221-3547

e-mail

Carissa Capuano

Graduate Student

221-3554

e-mail

Rob Fersch

Graduate Student

269-3558

e-mail

Brian Hahn

Graduate Student

269-3542

e-mail

Joe Katich

Graduate Student

221-3427

e-mail

  WWW

Aidan Kelleher

Graduate Student

221-3549

e-mail

 

Sarah Phillips

Graduate Student

221-1986

e-mail

  WWW

Allison Lung is also associate director, 12 GeV project, at Jefferson Lab



Research Program

Our core research program centers on four areas: studies of strange quark form-factors in the nucleon via parity violation, nucleon spin-structure experiments using polarized targets, real photon fixed-target experiments at SLAC, and Qweak, a search for physics beyond the standard model via the weak charge of the proton. Click on the links above to get information on each of these areas.

Additional areas of current research are outlined below.


Selected Additional Areas of Research

GnE
JLab E93-038

Measurement of the neutron's electric form factor using polarization transfer in electron scattering from the deuteron (Hall C at JLab)

Carlini, Finn, Lung, Crouse, Roche

Details

SAMPLE MIT/Bates

Measurement of the strange magnetic moment of the proton using parity-violating electron scatttering at backward angles. Complementary to JLab parity program.

Averett, Roche, Kramer

Details

TRIUMF program

Muon and pion capture experiments, focussing on weak axial structure of the nucleon.

Armstrong, Clark

Details

RadPhi
JLab E94-016

Meson spectroscopy using rare radiative decays of the phi meson (in Hall B at JLab).

Armstrong, Roche, Steiner

Details

CLAS

Nucleon structure and color transparency studies using the CLAS in Hall B at JLab.

Griffioen, Butuceanu

Details


Undergraduate Student Projects

We have a strong record of involving undergraduate students in our research. Faculty members have mentored a large number of undergraduate students, including dozens of senior and honors thesis students, NSF REU students, and other summer students over the last few years.

A partial list of some recent students and projects can be found here.

If you are a student, and are interested in participating in our research, please drop by and talk to one of us!


Selected Recent Publications

Here are a few recent publications from group members, with links to electronic versions. This is far from an exhaustive list, but it should provide an idea of our work.
K.A. Aniol et al.,   (HAPPEX collaboration)
``Parity-Violating Electron Scattering from 4He and the Strange Electric Form Factor of the Nucleon''
Phys. Rev. Lett 96 (2006) 022003 (preprint)

D.S. Armstrong et al., (G0 collaboration)
`` Strange-Quark Contributions to Parity-Violating Asymmetries in the Forward G0 Electron-Proton Scattering Experiment''
Phys. Rev. Lett. 95 (2005)092001    (preprint)

X. Zheng, et al.,
``Precision measurement of the neutron spin asymmetries and spin-dependent structure functions in the valence quark region''
Phys. Rev. C 70 (2004)065207    (preprint)

K. Aniol, et al. (HAPPEX Collaboration),
``Parity-violating electroweak asymmetry in e p scattering''
Phys. Rev. C 69 (2004)065501    (preprint)

X. Zheng, et al. (Hall A Collaboration),
``Precision measurement of the neutron spin asymmetry A1n and spin-flavor decomposition in the valence quark region''
Phys. Rev. Lett. 92 (2004)012004    (preprint)

M. Battaglieri, et al., (CLAS collaboration)
`` Photoproduction of the Omega Meson on the Proton at Large Momentum Transfer''
Phys.Rev.Lett. 90 (2003)022002    (preprint)

A more comprehensive list of recent publications from group members can be found here.

Recent Graduates

Here are some graduate students who completed their dissertations recently working with our group:
VINCENT A. SULKOSKY "The Spin Structure of 3He and the neutron at low Q2: A Measurement of the Generalized GDH Integrand"
           (Advisor: T.D. Averett),
now Hall A postdoctoral fellow at Jefferson Lab

STEPHANIE LOUISE BAILEY, "Parity Violation in Elastic Electron Scattering: A First Measurement of the Parity-Violating Asymmetry at Q2 = 0.631 GeV/c2 at Backward Angle"
           (Advisor: D.S. Armstrong),
now postdoctoral research fellow in Advanced Techniques for Cancer Imaging, Dept. of Radiology, Stanford U. School of Medicine.

BRYAN J. MOFFIT, "Elastic Scattering of Longitudinally Polarized Electrons from 4He: A Measurement of GsE at Q2 = 0.1 (GeV)2"
           (Advisor: D.S. Armstrong),
now postdoctoral fellow with MIT, working at Jefferson Lab

CORNEL BUTUCEANU, Quasi-Elastic Electron Scattering from a High-Momentum Nucleon in Deuterium
           (Advisor: K.A. Griffioen),
now postdoctoral fellow, U. of Regina

JEFFREY A SECREST, Measurement of Parity-Violating Electroweak Asymmetries in ep Scattering at 0.1 < Q2 < 0.4 (GeV/c)2
           (Advisor: A.F. Lung )
now postdoctoral fellow, U. Pennsylvania (SNO group)

KEVIN M KRAMER, The Search for Higher Twist Effects in the Neutron Spin-Structure Function g2n(x,Q2)
           (Advisor: T.D. Averett)
now postdoctoral fellow, Duke U.

PIBERO DJAWOTHO Measurement of the Neutron (3He) Spin Structure Functions at low Q2: A Connection between the Bjorken and Gerasimov-Drell-Hearn Sum Rule
           (Advisor: J.M. Finn)
now postdoctoral fellow, Indiana Univ. Cyclotron Facility (IUCF)

JESSICA H.D. CLARK The Ortho-Para Transition in Muonic Molecular Hydrogen
           (Advisor: D.S. Armstrong)
Head of Public Outreach, American Physical Society

HOVANES EGIYAN, Single pi+ Electroproduction in the First and Second Resonance Regions Using CLAS
           (Advisor: K.A. Griffioen)
now Postdoctoral Fellow, Jefferson Lab

GARY A. RUTLEDGE, Measurement of the Strange Sea of the Proton
           (Advisors: D.S. Armstrong and J.M. Finn)
now Postdoctoral Fellow, TRIUMF and U. Manitoba

PAUL M. KING, Precision Measurements of the Proton and Deuteron Polarized Structure Functions
           (Advisor: K.A. Griffioen)
now Postdoctoral Fellow, U. Illinois

KRISHNI WIJESOORIYA, First (e,e'p) Measurement of Polarization Transfer in a Complex Nucleus: 16O.
           (Advisor: J.M. Finn)
now Postdoctoral Research Associate, Duke U.


Physics Department
Graduate Studies in Physics at William and Mary
Jefferson Lab


armd@physics.wm.edu
last updated: November 2006