Color-octet heavy quarkonium productions in Z0 decays at LEP

Details Color-octet heavy quarkonium productions in Z0 decays at LEP Color-octet heavy quarkonium productions in Z0 decays at LEP

1996-07-04

arxiv.org/abs/hep-ph/9607236v2

Phys.Lett. B389 (1996) 609-615

Physics

High Energy Physics

High Energy Physics - Phenomenology

16 pages, LaTeX using revtex and epsfig. The version to appear in Phys. Lett. B. With more discussions on the angular distribu

Scientific paper

We consider the energy and the polar angle distributions of J/\psi's produced via the color-singlet and the color-octet (^3S_1^{(8)}) mechanisms in Z^0 \to J/\psi +X at LEP. Since both distributions of the J/\psi produced 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 Z^0 \rightarrow \Upsilon + X and W \to J/\psi ( or \Upsilon) + X in brief.

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