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D-wave heavy quarkonium production in fixed target experiments

Feng Yuan·Cong-Feng Qiao·Kuang-Ta Chao
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Abstract

We calculate the $D$-wave heavy quarkonium production at fixed target experiments under the NRQCD factorization formalism. We find that the color octet contributions are two orders of magnitude larger than color-singlet contributions if color-octet matrix elements are taken according to the NRQCD velocity scaling rules. Within the theoretical uncertainties, the prediction for the production rate of $2^{--}$ $D$-wave charmonium state agrees with the preliminary result of E705 and other experiments. Searching for the $1^{--}$ $D$-wave state $ψ(3770)$ is further suggested.

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Feng Yuan, Cong-Feng Qiao, Kuang-Ta Chao. 1998-10-12. D-wave heavy quarkonium production in fixed target experiments. https://doi.org/10.1103/physrevd.59.014009

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