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arXiv · hep-ph/9606462

Color-Octet Charmonium Production in Top Quark Decays

Cong-feng Qiao·Kuang-Ta Chao
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Abstract

We calculate the direct production rate of $J/ψ$ in top quark decays. The color-octet $J/ψ$ production via $t\rightarrow W^+ b J/ψ$ is shown to have a large branching ratio of order $1.5\times 10^{-4}$, which is over an order of magnitude higher than that of the color-singlet $J/ψ$ production via $t\rightarrow W^+ b J/ψ~g~g $ or $t\rightarrow W^+ b~χ_{cJ}~g$ followed by $χ_{cJ}\rightarrow J/ψ~γ$. This result can be used as a powerful tool to test the importance of the color-octet mechanism in heavy quarkonium production.

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Cong-feng Qiao, Kuang-Ta Chao. 1996-06-28. Color-Octet Charmonium Production in Top Quark Decays. https://doi.org/10.1103/physrevd.55.2837

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