Measurements of the neutron electric to magnetic form factor ratio GEn/GMn via the 2H((e)over-right-arrow,e' (n)over-right-arrow)1H reaction to Q2=1.45 (GeV/c)2 -: art. no. 025205

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