Unbiased gluon jet multiplicity from e$^+$e$^-$ three-jet events

Physics – High Energy Physics – High Energy Physics - Phenomenology

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

comments: 5 pages, 3 figures in eps, talk given at XXXI International Symposium on Multiparticle Dynamics, Sept 1-7, 2001, Dat

Scientific paper

The charged particle multiplicities of two- and three-jet events from the reaction e$^+$e$^-$,\to $Z$^0 \to hadrons$ are measured for Z$^0$ decays to light quark (uds) flavors, using the data sample of the OPAL Collaboration at LEP. Using recent theoretical expressions to account for biases from event selection, results corresponding to unbiased gluon jets are extracted. The unbiased gluon jet data are compared to corresponding results for quark jets. We determine the ratio $r \equiv \ngluon/\nq$ of multiplicities between gluon and quark jets as a function of energy scale. We also determine the ratio of slopes, $r^{(1)} \equiv ({\mathrm{d}}\ngluon /{\mathrm{d}}y) /({\mathrm{d}}\nq / {\mathrm{d}}y)$, and of curvatures, $r^{(2)} \equiv ({\mathrm{d}}^2\ngluon /{\mathrm{d}}y^2) /({\mathrm{d}}^2\nq / {\mathrm{d}}y^2)$, where $y$ specifies the energy scale. At 30 GeV, we find $r = 1.422\pm0.051$, $r^{(1)} = 1.761\pm0.071$ and $r^{(2)} = 1.98\pm0.13$, where the uncertainties are the statistical and systematic terms added in quadrature. These results are in general agreement with theoretical predictions.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Unbiased gluon jet multiplicity from e$^+$e$^-$ three-jet events does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Unbiased gluon jet multiplicity from e$^+$e$^-$ three-jet events, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Unbiased gluon jet multiplicity from e$^+$e$^-$ three-jet events will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-577665

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.