Recent results on jet fragmentation from CDF
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.
- Research Organization:
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- Sponsoring Organization:
- USDOE Office of Energy Research (ER) (US)
- DOE Contract Number:
- AC02-76CH03000
- OSTI ID:
- 795101
- Report Number(s):
- FERMILAB-Conf-02/082-E; TRN: US0201207
- Resource Relation:
- Conference: Lake Louise Winter Institute on Fundamental Interactions (LLWI 02), Lake Louise, Alberta (CA), 02/17/2002--02/23/2002; Other Information: PBD: 4 Jun 2002
- Country of Publication:
- United States
- Language:
- English
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