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arXiv · hep-ph/9509308

Color-Octet Quarkonium Production at the $Z$ Pole

Kingman Cheung·Wai-Yee Keung·Tzu Chiang Yuan
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Abstract

The direct production rate of $J/ψ$ via the color-octet mechanism is calculated at the $Z$ resonance. The color-octet production process $Z\to J/ψq \bar q$ 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 $J/ψ$.

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Kingman Cheung, Wai-Yee Keung, Tzu Chiang Yuan. 1995-11-29. Color-Octet Quarkonium Production at the $Z$ Pole. https://doi.org/10.1103/physrevlett.76.877

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