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

A. Camsonne , A.T. Katramatou , M. Olson , A. Acha , K. Allada , B.D. Anderson , J. Arrington , A. Baldwin

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J.-P. Chen S. Choi E. Chudakov E. Cisbani B. Craver P. Decowski C. Dutta E. Folts S. Frullani F. Garibaldi R. Gilman J. Gomez B. Hahn J.-O. Hansen D. W. Higinbotham T. Holmstrom J. Huang M. Iodice X. Jiang A. Kelleher E. Khrosinkova A. Kievsky E. Kuchina G. Kumbartzki B. Lee J.J. LeRose R.A. Lindgren G. Lott H. Lu L.E. Marcucci D.J. Margaziotis P. Markowitz S. Marrone D. Meekins Z.-E. Meziani R. Michaels B. Moffit B. Norum G.G. Petratos A. Puckett X. Qian O. Rondon A. Saha B. Sawatzky J. Segal M. Shabestari A. Shahinyan P. Solvignon N. Sparveris R.R. Subedi R. Suleiman V. Sulkosky G.M. Urciuoli M. Viviani Y. Wang B.B. Wojtsekhowski X. Yan H. Yao W.-M. Zhang X. Zheng L. Zhu

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

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