Fragmentation Of Cdf Jets
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| Release | : 1999 |
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Presented are the most recent jet fragmentation results from CDF: inclusive distributions of charged particle momenta and their k{sub T} in jets; average track multiplicities, as well as angular distributions of multiplicity flow, for a wide range of jet energies with E{sub T} from 40 to 300 GeV. The results are compared with Monte-Carlo and, when possible, analytical calculations performed in resumed perturbative QCD approximations (MLLA).
| Author | : Sergo Jindariani |
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| Total Pages | : 3 |
| Release | : 2006 |
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Presented are the latest results of jet fragmentation studies at the Tevatron using the CDF Run II detector. Studies include the distribution of transverse momenta (Kt) of particles jets, two-particle momentum correlations, and indirectly global event shapes in p{bar p} collisions. Results are discussed within the context of recent Next-to-Leading Log calculations as well as earlier experimental results from the Tevatron and e{sup +}e{sup -} colliders.
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| Release | : 2002 |
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In this paper, the most recent results on jet fragmentation obtained at the Collider Detector at Fermilab Tevatron are presented. The multiplicity and momentum distribution of charged particles inside jets in dijet events are compared to the predictions of the Modified Leading Log Approximation complemented with the hypothesis of Local Parton-Hadron Duality. Values for the two parameters of the model are extracted, the cut-off scale Q[sub eff]= 230[+-] 40 MeV and the rate of parton-to-hadron conversions K[sub LPHD][sup charged]= 0.56[+-] 0.10. A fit of the data for the ratio of multiplicities in gluon and quark jets r, where r is treated as a free parameter, results in r= 1.9[+-] 0.5. Also, we compare the charged particle multiplicities in dijet and[gamma]-jet events. The comparison allows for an extraction of a model-independent ratio of multiplicities in gluon and quark jets. We report r= N[sub g]/N[sub q]= 1.61[+-] 0.11(stat)[+-] 0.28(syst) for E[sub jet]= 40 GeV.
| Author | : Bradley Hubbard |
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| Total Pages | : 246 |
| Release | : 1989 |
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| Release | : 1576 |
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| Total Pages | : 112 |
| Release | : 1989 |
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Jet fragmentation properties have been studied in collisions of protons and antiprotons at a center-of-mass energy of 1.8 TeV, using the Collider Detector at Fermilab (CDF). The fractional momentum distribution of charged particles within jets is presented and compared with Monte-Carlo predictions. With increasing di-jet invariant mass from 60 to 200 GeV/c2 the fragmentation is observed to soften as predicted by scale breaking effects in Quantum Chromodynamics (QCD). The charged multiplicity in the jet core is observed to rise with di-jet invariant mass. 57 refs.
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| Release | : 1995 |
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| Author | : A. Safonov |
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| Total Pages | : 4 |
| Release | : 2004 |
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The latest results on jet physics at CDF are presented and discussed. Particular attention is paid to studies of the inclusive jet cross section using 177 pb{sup -1} of Run II data. Also discussed is a study of gluon and quark jet fragmentation.
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| Release | : 1986 |
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Data from three experiments at the SLAC ee− storage ring (PEP) on fragmentation of quark and gluon jets are presented. Results on particle production, particle flow, and multiplicities are given and comparisons with models and data from hadronic initial states are made. 10 refs., 14 figs., 1 tab.
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| Total Pages | : 8 |
| Release | : 1997 |
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Preliminary CDF results on inclusive momentum distributions of charged particles in high transverse momentum jets produced in {anti p}p collisions at (square root)s=1.8 TeV at the Tevatron are presented and compared with QCD predictions based on the Modified Leading Log Approximation.
