Color-Octet Quarkonium Production at the $Z$ Pole

Details Color-Octet Quarkonium Production at the $Z$ Pole Color-Octet Quarkonium Production at the $Z$ Pole

1995-09-15

arxiv.org/abs/hep-ph/9509308v2

Phys.Rev.Lett.76:877-880,1996

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages in LaTeX and 2 figures. Some minor changes and also include the comparison with present data. It is the published vers

Scientific paper

10.1103/PhysRevLett.76.877

The direct production rate of $J/\psi$ via the color-octet mechanism is
calculated at the $Z$ resonance. The color-octet production process $Z\to
J/\psi q \bar q$ is shown to have a substantial branching ratio as well as a
distinctive energy spectrum, which can be used as a powerful tool to
distinguish from the color-singlet direct production of the $J/\psi$.

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