O(αsv2) correction to J/ψ plus ηc production in e+e- annihilation at s=10.6 Gev

  • Based on the nonrelativistic QCD factorization approach, O(αsv2) corrections to J/ψ plus ηc production in m e+e- annihilation at √s=10.6 ≥v are calculated in this work. The numerical results show that the correction at αsv2 order is only about a few percent of the total theoretical result. This indicates that the perturbative expansions become convergent and that a higher order correction will be smaller. The uncertainties from the long-distance matrix elements, renormalization scale and the measurement in the experiment are also discussed. Our result is in agreement with the previous result by Jia.
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LI Xi-Huai and WANG Jian-Xiong. O(αsv2) correction to J/ψ plus ηc production in e+e- annihilation at s=10.6 Gev[J]. Chinese Physics C, 2014, 38(4): 043101. doi: 10.1088/1674-1137/38/4/043101
LI Xi-Huai and WANG Jian-Xiong. O(αsv2) correction to J/ψ plus ηc production in e+e- annihilation at s=10.6 Gev[J]. Chinese Physics C, 2014, 38(4): 043101.  doi: 10.1088/1674-1137/38/4/043101 shu
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Received: 2013-04-15
Revised: 2013-11-12
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O(αsv2) correction to J/ψ plus ηc production in e+e- annihilation at s=10.6 Gev

    Corresponding author: LI Xi-Huai,
    Corresponding author: WANG Jian-Xiong,

Abstract: Based on the nonrelativistic QCD factorization approach, O(αsv2) corrections to J/ψ plus ηc production in m e+e- annihilation at √s=10.6 ≥v are calculated in this work. The numerical results show that the correction at αsv2 order is only about a few percent of the total theoretical result. This indicates that the perturbative expansions become convergent and that a higher order correction will be smaller. The uncertainties from the long-distance matrix elements, renormalization scale and the measurement in the experiment are also discussed. Our result is in agreement with the previous result by Jia.

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