Measurement of the fraction of t(t)over-bar production via gluon-gluon fusion in p(p)over-bar collisions at root s=1.96 Tev Dahkki Aaltonen, T, Adelman, J, Akimoto, T, Albrow, MG, Alvarez Gonzaelez, B, Amerio, S, Amidei, D, Anastassov, A, Annovi, A, Antos, J, Apollinari, G, Apresyan, A, Arisawa, T, Artikov, A, Ashmanskas, W, Attal, A, Aurisano, A, Azfar, F, Azzurri, P, Badgett, W, Barbaro-Galtieri, A, Barnes, V, Barnett, B, Bartsch, V, Bauer, G