Two-Particle Momentum Correlations in Jets Produced in $p\bar{p}$ Collisions at $\sqrt{s}$ = 1.96-TeV

Aaltonen, T.; Adelman, Jahred A.; Akimoto, T.; Albrow, M.G.; Alvarez Gonzalez, B.; Amerio, S.; Amidei, D.; Anastassov, A.; Annovi, A.; Antos, J.

doi:10.1103/PhysRevD.77.092001

Two-Particle Momentum Correlations in Jets Produced in $p\bar{p}$ Collisions at $\sqrt{s}$ = 1.96-TeV

CDF

Collaboration

Feb, 2008

39 pages

Published in:

Phys.Rev.D 77 (2008) 092001

e-Print:

0802.3182 [hep-ex]

DOI:

10.1103/PhysRevD.77.092001

Report number:

FERMILAB-PUB-08-037-E

Experiments:

FNAL-E-0830

View in:

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reference search18 citations

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Abstract: (arXiv)

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}

is found to be

(1.4^{+0.9}_{-0.7})\times 100

MeV.

Note:

Submitted to Phys.Rev.D

anti-p p: colliding beams
anti-p p: inclusive reaction
jet: hadroproduction
charged particle: multiple production
correlation: two-photon
momentum: correlation
mass spectrum: (2jet)
quantum chromodynamics: perturbation theory
showers: parton
parton: momentum

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