Search for prompt production of χc and X(3872) in e+e- annihilations - Aubert, B; Bona, M; Boutigny, D; Karyotakis, Y; Lees, JP; Poireau, V; Prudent, X; Tisserand, V; Zghiche, A; Tico, JG; Grauges, E; Lopez, L; et al. (PHYSICAL REVIEW D, 2007)