Color-octet heavy quarkonium productions in Z0 decays at LEP
Seungwon Baek, P. Ko, Jungil Lee, H. S. Song
Abstract
We consider the energy and the polar angle distributions of J/ψ's produced via the color-singlet and the color-octet (3S1(8)) mechanisms in Z0 J/ψ+X at LEP. Since both distributions of the J/ψproduced via color-octet mechanism are significantly different from those via color-singlet mechanism, these observables can be used as tests of color-octet production mechanism for heavy quarkonia. We also discuss Z0 → Υ+ X and W J/ψ( or Υ) + X in brief.
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