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JLab Measurements of the 3He Form Factors at Large Momentum Transfers

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arxiv 1610.07456 v1 pith:3PHBNOND submitted 2016-10-24 nucl-ex

JLab Measurements of the 3He Form Factors at Large Momentum Transfers

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keywords formchargefactorfactorsfm-2magneticmeasurementsrange
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The charge and magnetic form factors, FC and FM, of 3He have been extracted in the kinematic range 25 fm-2 < Q2 < 61 fm-2 from elastic electron scattering by detecting 3He recoil nuclei and electrons in coincidence with the High Resolution Spectrometers of the Hall A Facility at Jefferson Lab. The measurements are indicative of a second diffraction minimum for the magnetic form factor, which was predicted in the Q2 range of this experiment, and of a continuing diffractive structure for the charge form factor. The data are in qualitative agreement with theoretical calculations based on realistic interactions and accurate methods to solve the three-body nuclear problem.

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