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

Abstract : 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/c$^{2}$. 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 (NLLA) 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 NLLA parton shower cutoff scale $Q_\mathit{eff}$ set equal to $\Lambda_\mathit{QCD}$ is found to be $(1.4^{+0.9}_{-0.7})\times 100$ MeV.
Document type :
Journal articles

http://hal.in2p3.fr/in2p3-00273902
Contributor : Swarna Bassava <>
Submitted on : Thursday, April 17, 2008 - 3:20:50 PM
Last modification on : Wednesday, September 15, 2021 - 2:56:02 PM

### Citation

T. Aaltonen, J. Adelman, T. Akimoto, M.G. Albrow, B. Alvarez Gonzalez, et al.. Two-Particle Momentum Correlations in Jets Produced in ppbar Collisions at s**(1/2) = 1.96-TeV. Physical Review D, American Physical Society, 2008, 77, pp.092001. ⟨10.1103/PhysRevD.77.092001⟩. ⟨in2p3-00273902⟩

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