�ber die magnetische Ablenkung von Wasserstoffmolek�len und das magnetische Moment des Protons. I

Model independent extraction of the proton magnetic radius from electron scattering

“…In fact, since we can calculate G cut (0), if we assume r p M ≈ 0.87 fm and use a (0) 1 ≈ −2, we can calculate and find a (1) 1 ≈ −13 in the first case and a (1) 1 ≈ 3 in the second case. These are the values we obtained above…”

“…M (t) in the range 4m 2 π < t < 40m 2 π and as a result |a (1) 1 | must be larger to maintain the same size of r p M preferred by the data. In fact, since we can calculate G cut (0), if we assume r p M ≈ 0.87 fm and use a (0) 1 ≈ −2, we can calculate and find a (1) 1 ≈ −13 in the first case and a (1) 1 ≈ 3 in the second case.…”

“…The imaginary part of G (1) M close to the cut can be described by the pion form factor F π (t) (normalized to F π (0) = 1) and f 1 − (t), a partial ππ → NN amplitude [95,96,87]:…”

“…Are we facing also a magnetic radius puzzle? 1 The purpose of this study is to apply the methods established in [76], to the extraction of the magnetic radius of the proton from scattering data. As in [76] we will use proton, neutron, and ππ scattering data to determine the magnetic radius of the proton from the reported measurement of the magnetic form factors of the proton and neutron.…”

A Measurement of the neutron electric form factor at very large momentum transfer using polaried electrions scattering from a polarized helium-3 target

“…As early as 1933, measurements of the proton magnetic moment indicated that nucleons may have an internal structure [15]. However, as of this writing in 2009, no satisfactory complete description of the nucleon's internal structure exists.…”