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Gregg B. Franklin
Professor and Head of the Department of Physics
Ph.D., Massachusetts Institute of Technology
Email: franklin@ernest.phys.cmu.edu
Phone: (412)
268-2743
FAX: (412) 681-0648
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Research in medium energy physics
explores the boundary between nuclear and particle physics.
As part of the Carnegie Mellon University Medium Energy Group, Professor
Franklin is involved in an experimental program which includes searches for new
hadronic structures such as the six-quark H-Dibaryon and the study of nuclear
systems containing s-quarks in addition to the u- and d-quarks found in ordinary
matter. Many
of these experiments are carried out at Brookhaven National Laboratory using equipment
and techniques developed at CMU.
He is also involved in the "G0 experiment" at Thomas Jefferson
Laboratory in Virginia.
This ultra-high precision measurement will use the parity-violating
asymmetry of the weak force to study the strange (s-quark) content of the
proton. The
Medium Energy Group is currently building electronics and detector subsystems
which will be used in this experiment.
Selected Publications
D.S. Armstrong, et al., (The G0 Collaboration),
“Transverse Beam Spin Asymmetries in Forward-Angle Elastic Electron-Proton
Scattering”, Phys. Rev Lett. 99:092301 (2007).
J.D. Parker, et al., (The E788
Collaboration), “Weak Decay of 4‑LHe”,
Phys. Rev C 76:035501 (2007).
K.D. Paschke, et al., (The
PS185 Collaboration), “Experimental determination of the complete spin
structure for  at  =1.637 GeV/c”, Phys. Rev. C (2006) 015206.
Ukai, M.
et al., “Cascade g decay in the
L7L hypernucleus”,
Phys. Rev. C, (Jan 2006): 12501/1-5
D.S.
Armstrong, et al., “Strange-quark contributions to parity-violating asymmetries
in the forward G0 electron-proton scattering experiment”. Phys. Rev. Let. V95
(Aug 2005) p 092001/1-5
Suzuki, T.
et al., “Discovery of a strange tribaryon S0(3115) in 4He(stopped
K-,p) reaction”, Phys. Lett. B 597, (Sept. 2004) 263-9.
Ukai, M.et
al., “Hypernuclear fine structure in  and the Lambda N tensor interaction” Phys.
Rev. Lett 93, (Dec. 2004) : 232501/1-5
Barnes,
P.D. et al., “Measurement of Spin Transfer Observables in
 at 1.637 GeV/c” Phys. Rev. Lett.. 89, (2003) 212302.
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