*The summary is correct. Its a pity really because theory suggests that there should/could be such an interaction, which is why there have been many attempts to try and measure it. In all the examples that I have found the result comes out the same: no measureable coupling.*
The measurement of the interaction was not done with an anapole magnetic field. Such a field has only been found in spin ice and toroids. An anapole magnetic field can only have a toroidal moment. See http://en.wikipedia.org/wiki/Toroidal_moment <snip> All CPT self-conjugate particles, in particular the Majorana fermion, are forbidden from having any multipole moments other than toroidal moments. At tree level , an anapole-only particle interacts only with external currents, not with free-space electromagnetic fields, and the interaction cross section diminishes as the particle velocity slows. For this reason, heavy Majorana fermions have been suggested as plausible candidates for cold dark matter. <EndSnip> The SPP soliton will produce an anapole magnetic field and therefore should be a candidate for dark matter.
