Abstract
The Sterman-Weinberg 2-jet cross section is measured from the hadron energy flow using the thrust axis to define the axis of the jet cone. The results are compared with first order QCD predictions. Deviations due to fragmentation are observed which decrease with increasing center of mass energy. We obtain an upper limit of Λmax≈523 MeV for the QCD scale parameter using a method which is insensitive to the details of the fragmentation. Moments of energy flow are also studied.
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Deceased
Supported by the BMFT, FRG
Partially supported by Norwegian Council for Science and Humanities
Rome University, partially supported by I.N.F.N., Sezione di Roma, Italy
Supported by the U.K. Science and Engineering Research Council
Partially supported by the Department of Energy, USA
Supported by a Research Grant of the Ministry of Science and Research of Northrhine-Westphalia
Partially supported by the Israeli Academy of Sciences and Humanities-Basic Research Foundation
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PLUTO Collaboration., Berger, C., Deuter, A. et al. Sterman-Weinberg jets and energy flow ine + e − annihilation at CM energies between 9.4 and 35 GeV. Z. Phys. C - Particles and Fields 27, 167–175 (1985). https://doi.org/10.1007/BF01556606
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DOI: https://doi.org/10.1007/BF01556606