# {Two-particle momentum correlations in jets produced in $p \bar{p}$ Collisions at $\sqrt{s}$ = 1.96-TeV}

We present the first measurement of two-particle momentum correlations in jets produced in $p\bar{p}$ collisions at $\sqrt{s}=1.96$ TeV. Results are obtained for charged particles within a restricted cone with an opening angle of 0.5 radians around the jet axis and for events with dijet masses between 66 and 563 GeV/c2. A comparison of the experimental data to theoretical predictions obtained for partons within the framework of resummed perturbative QCD in the next-to-leading log approximation shows that the parton momentum correlations survive the hadronization stage of jet fragmentation, giving further support to the hypothesis of local parton-hadron duality. The extracted value of the next-to-leading-log-approximation parton shower cutoff scale Qeff set equal to LambdaQCD is found to be (1.4-0.7+0.9)×100 MeV.

### Cited Authors

• Aaltonen, ; T, ; others,

• 2008

• Phys. Rev.

• D77 /

• 092001 -