"Measurements of the Electric Form Factor of the Neutron"Shigeyuki Tajima , Duke University [Host: Donal Day]
ABSTRACT:
Precise measurements of the electric form factor of the neutron, Gen, over a wide range of the square of the four-momentum transfer, Q^2, are important for understanding nucleon and nuclear
electromagnetic structure. The Jefferson Laboratory E93-038 collaboration recently reported the first measurements of Gen using
polarization techniques at Q^2 > 1 (GeV/c)^2. The collaboration measured the ratio of the electric form factor to magnetic form factors of the neutron, g = Gen/Gmn, at three Q^2 values (0.45, 1.13 and 1.45 (GeV/c)^2) using the quasi-elastic 2H(vec e,e'vec n)1H reaction. The value for g was determined from the measured ratio of
the sideways and longitudinal components of the neutron polarization vector. A polarimeter based on np scattering was used to analyze the
polarization of the recoil neutrons. In this talk, the data analyses and our results for g and Gen at Q^2=0.45 and 1.13 (GeV/c)^2 will be
given.
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Nuclear Physics Seminar Wednesday, June 23, 2004 3:30 PM Physics Building, Room 204 Note special date. Note special room. |
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