from the vector dominance model and the latest QCD sum rule result. Note that a larger value of $\chi$ can still be realized, if the full DA has a rather flat shape, this is the case e.g. in the instanton-model of the QCD vacuum [@Petrov:1998kg; @Praszalowicz:2001wy].

The magnetic moment of the neutron can, as already stated, be obtained from Eq. by exchanging $e_u \leftrightarrow e_d$. We plotted the results in Fig. \[NeutronGraph\]. As in [@Braun:1988qv], the sum rule prediction for $\mu_N$ is somewhat below the experimental value [@PDG] $\mu_N\approx-1.913$.

The experimental result for the neutron magnetic moment $\mu_N$ can be reproduced by using a $40\%$ larger value of $\phi(1/2)$ that can be achieved if the magnetic susceptibility $\chi$ is increased by the corresponding amount, or if the photon distribution amplitude is more peaked in the middle point as might be suggested by the model for the distribution amplitude for transversely polarized mesons in [@Bakulev:2000er]. The stability of the neutron sum rule becomes, however, somewhat worse in this case. Also also the agreement of the sum rule prediction for the proton magnetic moment is spoiled. Also $\mu_N$ turns out to be more sensitive than $\mu_p$ to those higher twist corrections that 