Electromagnetic Production of J/ψ at e+e− colliders and the Signature for Color-Octet

نویسندگان

  • Chao-Hsi CHANG
  • Cong-Feng QIAO
  • Jian-Xiong WANG
چکیده

Electromagnetic production of J/ψ at ee colliders is investigated. It is expected to be as a further test of charmonium production of QED nature. We find that at the energies of CESR, BEPC, and TRISTAN (e.g. 4.0GeV ≤ √s ≤ 60GeV ), the contributions of the concerned electromagnetic processes to the J/ψ inclusive production are great, even dominant, thus they greatly effect the observation on the color-octet J/ψ production signature at ee colliders. The production of ψ, being very similar to the one of J/ψ, is roughly estimated and its influence on the observation on the color-octet J/ψ production signature at ee collision is also discussed

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تاریخ انتشار 1997