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Measuring G(n/e) at High Momentum Transfers.

DE2003804052

Publication Date	2000
Personal Author	Reitz, B.
Page Count	10
Abstract	Experiment E02-013 at Thomas Jefferson National Accelerator Facility will extend the measured range of the neutron electric form factor G(sup n)(sub E) to Q(sup 2)=3.4 (GeV/c)(sup 2) through a measurement of the cross section asymmetry in the reaction(sup 3)(rvec H)e((rvec e), e(prime)n). Recent theoretical investigations, motivated by the results on the ratio of the proton electric and magnetic form factor, predict higher values of G(sup n)(sub E) compared to older predictions. The experiment utilizes a polarized (sup 3)He target and the polarized CEBAF electron beam. Scattered electrons will be detected in the BigBite spectrometer, recoiling neutrons in an array of scintillators. The experimental and theoretical developments needed to perform the measurement and the extract G(sup n)(sub E) from(sup 3)He will be described. Concepts of extending the measurement of G(sup n)(sub E) to even higher momentum transfers will be discussed.
Keywords	Accelerators Momentum transfer Neutrons Cross sections Electron beams Form factors Protons Spin Targets
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Thomas Jefferson National Accelerator Facility, Newport News, VA.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200316

Measuring G(n/e) at High Momentum Transfers.

Measuring G(n/e) at High Momentum Transfers.
DE2003804052

Publication Date	2000
Personal Author	Reitz, B.
Page Count	10
Abstract	Experiment E02-013 at Thomas Jefferson National Accelerator Facility will extend the measured range of the neutron electric form factor G(sup n)(sub E) to Q(sup 2)=3.4 (GeV/c)(sup 2) through a measurement of the cross section asymmetry in the reaction(sup 3)(rvec H)e((rvec e), e(prime)n). Recent theoretical investigations, motivated by the results on the ratio of the proton electric and magnetic form factor, predict higher values of G(sup n)(sub E) compared to older predictions. The experiment utilizes a polarized (sup 3)He target and the polarized CEBAF electron beam. Scattered electrons will be detected in the BigBite spectrometer, recoiling neutrons in an array of scintillators. The experimental and theoretical developments needed to perform the measurement and the extract G(sup n)(sub E) from(sup 3)He will be described. Concepts of extending the measurement of G(sup n)(sub E) to even higher momentum transfers will be discussed.
Keywords	Accelerators Momentum transfer Neutrons Cross sections Electron beams Form factors Protons Spin Targets
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Thomas Jefferson National Accelerator Facility, Newport News, VA.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200316