Context : Numerical simulations predict that minor mergers are an important channel for the mass assembly of galaxies .
However , minor mergers are relatively difficult to detect using imaging , especially at high redshift .
While such events are much less violent than major mergers , they can nevertheless leave several features on the kinematical structures of remnant galaxies which could be detected using 3D spectroscopy .

Aims : We present the first direct detection of a minor merger in a z \sim 0.6 galaxy .
Such events could indeed be good candidates to explain the kinematics of perturbed rotating disks observed with GIRAFFE at z \sim 0.6 .

Methods : We present photometric and kinematical evidence of such an event in a combined analysis of three-band HST/ACS imaging and VLT/GIRAFFE 2D-kinematics .

Results : Using these data , we are able to demonstrate that a minor merger of a relatively small satellite ( mass ratio \sim 1:18 ) is occurring in this galaxy .
We also derive a total SFR of \sim 21 M _ { \odot } / yr .

Conclusions : Minor mergers could be one of the physical processes explaining the kinematics of perturbed rotating disks , which represent \sim 25 % of emission line intermediate mass galaxies at z \sim 0.6 .
3D spectroscopy appears to be a very good tool to identify minor mergers in distant ( and local ) galaxies .