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Two-particle momentum correlations in jets produced in pp̄ collisions at s=1.96TeV

  • T. Aaltonen
  • , J. Adelman
  • , T. Akimoto
  • , M. G. Albrow
  • , B. Álvarez González
  • , S. Amerio
  • , D. Amidei
  • , A. Anastassov
  • , A. Annovi
  • , J. Antos
  • , M. Aoki
  • , G. Apollinari
  • , A. Apresyan
  • , T. Arisawa
  • , A. Artikov
  • , W. Ashmanskas
  • , A. Attal
  • , A. Aurisano
  • , F. Azfar
  • , P. Azzi-Bacchetta
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Research output: Contribution to journalArticlepeer-review

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Abstract

We present the first measurement of two-particle momentum correlations in jets produced in pp̄ collisions at s=1.96TeV. 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 563GeV/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 ΛQCD is found to be (1.4-0.7+0.9)×100MeV.

Original languageEnglish
Article number092001
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume77
Issue number9
DOIs
StatePublished - 16 May 2008

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