Measurements of the neutron electric to magnetic form-factor ratio G(En) / G(Mn) via the H-2(polarized-e, e-prime,polarized-n)H-1 reaction to Q**2 = 1.45-(GeV/c)**2
2005
We report values for the neutron electric to magnetic form factor ratio, G{sub En}/G{sub Mn}, deduced from measurements of the neutron's recoil polarization in the quasielastic {sup 2}H(e{yields},e{sup '}n{yields}){sup 1}H reaction, at three Q{sup 2} values of 0.45, 1.13, and 1.45 (GeV/c){sup 2}. The data at Q{sup 2}=1.13 and 1.45 (GeV/c){sup 2} are the first direct experimental measurements of G{sub En} employing polarization degrees of freedom in the Q{sup 2}>1 (GeV/c){sup 2} region and stand as the most precise determinations of G{sub En} for all values of Q{sup 2}.
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