Polarization and forward-backward asymmetry of ΛΛ baryons in hadronic Z0 decays

, OPAL Collaboration (1998) Polarization and forward-backward asymmetry of ΛΛ baryons in hadronic Z0 decays. European Physical Journal C: Particles and Fields, 2 (1). pp. 49-59. ISSN 1434-6044

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Abstract

The longitudinal polarization, the transverse polarization, and the forward-backward asymmetry of ΛΛ baryons, have been measured using a sample of 4.34 million hadronic Z0Z0 decays collected with the OPAL detector at LEP between 1990 and 1995. These results are important as an aid to the understanding of hadronization mechanisms. Significant longitudinal polarization has been observed at intermediate and high momentum. For xExE ( ≡2EΛ/s√)>≡2EΛ/s)> 0.3, the longitudinal polarization has been measured to be −32.9±5.5−32.9±5.5 (stat) ±± 5.2 (syst)%. We have observed no transverse polarization. A significant forward-backward asymmetry has been measured and can be described by a JETSET model.

Item Type:
Journal Article
Journal or Publication Title:
European Physical Journal C: Particles and Fields
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/2200/2201
Subjects:
ID Code:
82535
Deposited By:
Deposited On:
01 Nov 2016 12:12
Refereed?:
Yes
Published?:
Published
Last Modified:
01 Dec 2020 04:06