Observation of the narrow state X(3872) {r-arrow} J/{psi}{pi}{sup +} {pi}{sup -} in {ovr p}p collisions at {radical}{ovr s} = 1.96 TeV.

Acosta, D; Affolder, T; Ahn, M; Akimoto, T; Albrow, M; Ashmanskas, William; Blair, Robert; Byrum, Karen; Kuhlmann, Stephen; LeCompte, Thomas; Nodulman, Lawrence; Proudfoot, James; Tanaka, Masashi; Thurman-Keup, Randy; Wagner, Robert; Wicklund, Arthur