negative parity with the $\Delta$ interpolating field $\eta^{\mu}$ can be separated from those of spin $3/2$ states with positive parity.

For the calculation we will use a technique based on the background field method, that was first used in [@Balitsky:1989ry] and [@Braun:1988qv] to calculate the radiative $\Sigma \to p\gamma$ transition and the nucleon magnetic moments. In this work we will also give an update on the LCSR results for the magnetic moments. Our results for $\gamma p \to \Delta^+$ can easily be conferred to $\gamma n \to \Delta^{0}$ by exchanging $e_u \leftrightarrow e_d$ in the final formulae.

The present analysis is also fuelled by the results of Refs.[@Belyaev:1995ya; @Peters], where nucleon-$\Delta$-transition form factors were calculated for virtual photons. In the both calculations that use different (local duality and LCSR, using nucleon distribution amplitudes [@Braun:2000kw]) techniques, the magnetic transition form factor comes out to be below the data for the momentum transfers below $2 \;\!{\rm GeV}^2$, and the reason for this discrepancy is not understood. In order to understand the origin of this problem it is imperative to have an alternative calculation for the low $Q^2$ region. Our calculation for $Q^2=0$ provides a step in this direction.

The presentation is organised 