[PDF] Magnitudes of $q\bar q$ jet and $q\bar qg$-jet at Z$^0$-pole in OPAL BEC -- Application of the second conventional formula with two-component (CF$_{\rm II}$) --- | Semantic Scholar

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Corpus ID: 238531255

Magnitudes of $q\bar q$ jet and $q\bar qg$-jet at Z$^0$-pole in OPAL BEC -- Application of the second conventional formula with two-component (CF$_{\rm II}$) ---

@inproceedings{Mizoguchi2021MagnitudesO,
title={Magnitudes of \$q\bar q\$ jet and \$q\bar qg\$-jet at Z\$^0\$-pole in OPAL BEC -- Application of the second conventional formula with two-component (CF\$\_\{\rm II\}\$) ---},
author={Takuya Mizoguchi and Seiji Matsumoto and Minoru Biyajima},
year={2021}
}

We investigate the contribution of 2-jet and 3-jet at Z-pole in OPAL Bose-Einstein correlation (BEC) by using the second conventional formula with two-component, as well as introducing random variables for the MINUIT method. It is found that the magnitude of the 3-jet is 1.29± 0.27 fm, which is about 34% higher than that of the 2-jet (0.96±0.01) fm. The fraction of 3-jet to all-jet is 0.18±0.03, which is consistent with an empirical value by the OPAL collaboration.

Abstract This article gives an overview of the main experimental tests of perturbative QCD performed at LEP. It covers the following topics: determination of α s from event shapes, tests of flavour… Expand