  We analyze the time-like processes gamma gamma -> B Bbar and p p-bar -> gamma
M at large Mandelstam variables within the handbag approach for which the
process amplitudes factorize in hard partonic subprocesses and annihilation
form factor. The latter represent moments of baryon-antibaryon generalized
parton distributions. Symmetry relations restrict the number of independent
annihilation form factors for the ground state baryons drastically. We
determine these form factors from the present BELLE data on gamma gamma -> B
Bbar with the help of simplifying assumptions. The knowledge of these form
factors allow for predictions of p pbar -> gamma M for various mesons which may
be probed at FAIR.
