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Affolder, T; Azfar, F; Bachacou, H; de Barbaro, P; Barbaro-Galtieri, A; Baroiant, S; Beretvas, A; Berge, J P; Bhatti, A; Bloom, K; Bodek, A; Brandl, A; Bromberg, C; Bruner, N; Cabrera, S; Carlson, J; Carlsmith, D; Chan, A W; Chertok, M; Conway, J; Cranshaw, J; Dell'Agnello, S; Dell'Orso, M; Demortier, L; Erbacher, R; Fiori, I; Gallas, A; Gao, T; Gerdes, D W; Glenzinski, D; Haber, C; Hara, K; Harris, R M; Hatakeyama, K; Herndon, M; Holck, C; Huth, J; Introzzi, G; Iwai, J; Iwata, Y; James, E; Kambara, H; Kamon, T; Kaneko, T; Kasha, H; Keaffaber, T A; Kim, M J; Kim, S H; Kuwabara, T; Liu, Y C; Loken, J; Lukens, P; Madrak, R; Mazzanti, P; Miller, J S; Moore, E; Moulik, T; Murat, P; Nelson, C; Ngan, C Y; Nodulman, L; Oh, Y D; Ohmoto, T; Orejudos, W; Palmonari, F; Papadimitriou, V; Paulini, M; Pescara, L; Piacentino, G; Pitts, K T; Pukhov, O; Ratnikov, F; Reher, D; Safonov, A; Saltzberg, D; Sato, H; Schmidt, M P; Scribano, A; Semenov, A; Shochet, M; Sidoti, A; Snider, F D; Strologas, J; Sumorok, K; Tanaka, M; Teng, P K; Terashi, K; Tkaczyk, S; Toback, D; Toyoda, H; Ukegawa, F; Vejcik, 3rd, S; Wagner, R G; Wan, Z; Waters, D; Wolbers, S; Wolinski, S; Yao, W; Yoshida, T; Zanetti, A
Physical review letters, 2001-Nov-19, 20011119, Letnik: 87, Številka: 21Journal Article
We report on a measurement of the mean charged-particle multiplicity of jets in dijet events with dijet masses in the range 80-630 GeV/c(2), produced at the Tevatron in pp collisions with square root (s) = 1.8 TeV and recorded by the Collider Detector at Fermilab. The data are fit to perturbative-QCD calculations carried out in the framework of the modified leading log approximation and the hypothesis of local parton-hadron duality. The fit yields values for two parameters in that framework: the ratio of parton multiplicities in gluon and quark jets, r identical withN(g-jet)(partons)/N(q-jet)(partons) = 1.7+/-0.3, and the ratio of the number of charged hadrons to the number of partons in a jet, K(charged)(LPHD) identical with N(charged)(hadrons)/N(partons) = 0.57+/-0.11.
