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We present the first measurement of two-particle momentum correlations injets produced in $p\bar p$ collisions at $\sqrt{s}=1.96$ TeV. Results areobtained for charged particles within a restricted cone with an opening angleof 0.5 radians around the jet axis and for events with dijet masses between 66and 563 GeV/c$^{2}$. A comparison of the experimental data to theoreticalpredictions obtained for partons within the framework of resummed perturbativeQCD in the next-to-leading log approximation (NLLA) shows that the partonmomentum correlations survive the hadronization stage of jet fragmentation,giving further support to the hypothesis of local parton-hadron duality. Theextracted value of the NLLA parton shower cutoff scale $Q_\mathit{eff}$ setequal to $\Lambda_\mathit{QCD}$ is found to be $(1.4^{+0.9}_{-0.7})\times 100$MeV.

Two-Particle Momentum Correlations in Jets Produced in ppbar Collisions at s**(1/2) = 1.96-TeV