Color-Octet Charmonium Production in Top Quark Decays
نویسندگان
چکیده
We calculate the direct production rate of J/ψ in top quark decays. The color-octet J/ψ production via t → WbJ/ψ is shown to have a large branching ratio of order 1.5× 10−4, which is over an order of magnitude higher than that of the color-singlet J/ψ production via t → WbJ/ψ g g or t → Wb χcJ g followed by χcJ → 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. PACS number(s):14.40.Lb 14.65.Ha
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