Abstract
Data on jet masses, resulting from the decomposition ofe + e − hadronic final states into two hemispheres, are presented at centre of mass energies between 12 and 43.5 GeV. Comparisons are made with bareO(α 2 s ) QCD predictions as well as with QCD based fragmentation models. Values for α s and\(\Lambda _{\overline {MS} } \) are determined, both with and without hadronization effects included. Upper and lower limits for\(\Lambda _{\overline {MS} } \) independent of fragmentation models have been determined to be 0.480±0.025 GeV and 0.047±0.007 GeV respectively.
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Partially supported by DGICIT, Spain, and Kfz-Karlsruhe, FRG
Supported by Bundesministerium für Forschung und Technologie
Supported by UK Science and Engineering Research Council
Supported by CAICYT
Supported by the Minerva Gesellschaft für Forschung GmbH
Supported by US Dept. of Energy, contract DE-AC0276ER000881 and by US Nat. Sci. Foundation Grant no INT-8313994 for travel
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TASSO Collaboration., Braunschweig, W., Gerhards, R. et al. Experimental study of jet masses ine + e − annihilation at c.m. energies between 12 and 43.5 GeV. Z. Phys. C - Particles and Fields 45, 11–23 (1989). https://doi.org/10.1007/BF01556666
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DOI: https://doi.org/10.1007/BF01556666