Pietro, A Di; Amorini, F; Figuera, P; Fisichella, M; Lattuada, M; Musumarra, A; Papa, M; Pellegriti, M G; Randisi, G; Rizzo, F; Santonocito, D; Scalia, G; Scuderi, V; Strano, E; Torresi, D; Acosta, L; Martel, I; Perez-Bernal, F; Borge, M J G; Vidal, A Maira; Tengblad, O; Fraile, L M; Jeppesen, H; Voulot, D; Wenander, F; Gomez-Camacho, J; Milin, Matko; Raabe, R; Zadro, Mile: Evidence of strong effects of the 11Be halo structure on reaction processes at energies around the Coulomb barrier