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arXiv · 0903.1312

Neutron Properties in the Medium

I. C. Cloët·Gerald A. Miller·E. Piasetzky·G. Ron
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Abstract

We demonstrate that for small values of momentum transfer, Q^2, the in-medium change of the G_E/G_M form factor ratio for a bound neutron is dominated by the change in the electric charge radius and predict in a model independent manner that the in-medium ratio will increase relative to the free result. This effect will act to increase the predicted cross-section for the neutron recoil polarization transfer process 4He(e,e'n)3He. This is in contrast to medium modification effects on the proton G_E/G_M from factor ratio, which act to decrease the predicted cross-section for the 4He(e,e'p)3H reaction. Experiments to measure the in-medium neutron form factors via neutron knockout reactions are currently feasible in the range 0.1 < Q^2 < 1 GeV^2.

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I. C. Cloët, Gerald A. Miller, E. Piasetzky, G. Ron. 2009-03-09. Neutron Properties in the Medium. https://doi.org/10.1103/physrevlett.103.082301

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