Measurement of Leading Particle Effects in Decays ofZ0Bosons into Light Flavors

K. Abe, K. Abe, T. Akagi, N. J. Allen, W. W. Ash, D. Aston, K. G. Baird, C. Baltay, H. R. Band, M. B. Barakat, G. Baranko, O. Bardon (+215 others)
1997 Physical Review Letters  
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
more » ... mentum 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.
doi:10.1103/physrevlett.78.3442 fatcat:2kpnu5p4trft7mfyr33owgmlxu