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The J/ψProduction Associated with a Hard Photon and the Color-Octet Singnature in e^+e^- Annihilation

Chao-Hsi Chang·Cong-Feng Qiao·Jian-Xiong Wang
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Abstract

J/ψproduction associated with a hard photon in e^+e^- annihilation, being of QED nature, is invastigated thoroughly in the paper. To show its influence on the observation of the color-octet singnature in the e^+e^- annihilation via J/ψinclusive production, the cross sections of the J/ψproductions through different mechanisms at various energies are compared quantatively by presenting them in figures together. The contribution from the production associated with a hard photon to the inclusive production of J/ψis pointed out to be significant at the concerned energies, thus the influence from it on the observation of the color-octet signature should be dealt with carefully.

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Chao-Hsi Chang, Cong-Feng Qiao, Jian-Xiong Wang. 1997-06-15. The J/ψProduction Associated with a Hard Photon and the Color-Octet Singnature in e^+e^- Annihilation. https://doi.org/10.1103/physrevd.56.r1363

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