NLO QCD corrections to ηc+hc(1P)/ψ1,2(1D) production at B-factories

  • We calculate the next-to-leading order (NLO) quantum chromodynamics (QCD) corrections to double charmonium production processes e+e- → γ* →ηc+hc(1P)=ψ1,2(1D) within the non-relativistic QCD (NRQCD) factorization framework. We find that the corrections to ηc+hc(1P) production are positive, while those to ηc1,2(1D) are negative. Unlike the J/ψ+ηc case, all the corrections here are not large. Uncertainties in the renormalization scale, quark mass and running energy of center-of-mass are discussed, and the scale dependence of these processes is found to be greatly reduced with the NLO QCD corrections.
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CHEN Long-Bin, JIANG Jun and QIAO Cong-Feng. NLO QCD corrections to ηc+hc(1P)/ψ1,2(1D) production at B-factories[J]. Chinese Physics C, 2015, 39(10): 103101. doi: 10.1088/1674-1137/39/10/103101
CHEN Long-Bin, JIANG Jun and QIAO Cong-Feng. NLO QCD corrections to ηc+hc(1P)/ψ1,2(1D) production at B-factories[J]. Chinese Physics C, 2015, 39(10): 103101.  doi: 10.1088/1674-1137/39/10/103101 shu
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Received: 2015-10-21
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NLO QCD corrections to ηc+hc(1P)/ψ1,2(1D) production at B-factories

    Corresponding author: CHEN Long-Bin,
    Corresponding author: JIANG Jun,
    Corresponding author: QIAO Cong-Feng,

Abstract: We calculate the next-to-leading order (NLO) quantum chromodynamics (QCD) corrections to double charmonium production processes e+e- → γ* →ηc+hc(1P)=ψ1,2(1D) within the non-relativistic QCD (NRQCD) factorization framework. We find that the corrections to ηc+hc(1P) production are positive, while those to ηc1,2(1D) are negative. Unlike the J/ψ+ηc case, all the corrections here are not large. Uncertainties in the renormalization scale, quark mass and running energy of center-of-mass are discussed, and the scale dependence of these processes is found to be greatly reduced with the NLO QCD corrections.

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