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arXiv · hep-ex/9702009

Measurement of Leading Particle Effects in Decays of Z0 Bosons into Light Flavors

The SLD Collaboration·K. Abe et al
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Abstract

We present evidence for leading particle production in hadronic decays of the Z0 boson to light-flavor jets. A polarized electron beam was used to tag quark and antiquark jets, and a vertex detector was employed to reject heavy-flavor events. Charged hadrons were identified with a Cherenkov ring imaging detector. In the quark jets, more high-momentum p, Lambda, K-, and anti-K*0 were observed than their antiparticles, and vice versa for antiquark jets, providing direct evidence that the higher-momentum particles in jets are more likely to carry the primary quark or antiquark from the Z0 decay, and that s-s(bar) production is suppressed in fragmentation.

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The SLD Collaboration, K. Abe et al. 1997-02-14. Measurement of Leading Particle Effects in Decays of Z0 Bosons into Light Flavors. https://doi.org/10.1103/physrevlett.78.3442

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