Space- and time-like kaon electromagnetic form factors in perturbative QCD

  • We present a phenomenological analysis of the space- and time-like charged kaon electromagnetic form factors in factorized perturbative QCD (pQCD) by employing an analytic model for αs(Q2) and an infrared (IR) finite gluon propagator. In the space-like region, due to the lack of available experimental data above Q2~0.2 GeV2, we only give our results for intermediate energies and make no comparison. In the time-like region, our results agree reasonably well with the available experimental data at moderate energies, including the CLEO data and the m J/ψ result.
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JIN Dan and YANG Ya-Dong. Space- and time-like kaon electromagnetic form factors in perturbative QCD[J]. Chinese Physics C, 2012, 36(10): 941-946. doi: 10.1088/1674-1137/36/10/004
JIN Dan and YANG Ya-Dong. Space- and time-like kaon electromagnetic form factors in perturbative QCD[J]. Chinese Physics C, 2012, 36(10): 941-946.  doi: 10.1088/1674-1137/36/10/004 shu
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Received: 2012-01-20
Revised: 2012-02-25
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Space- and time-like kaon electromagnetic form factors in perturbative QCD

    Corresponding author: JIN Dan,
    Corresponding author: YANG Ya-Dong,

Abstract: We present a phenomenological analysis of the space- and time-like charged kaon electromagnetic form factors in factorized perturbative QCD (pQCD) by employing an analytic model for αs(Q2) and an infrared (IR) finite gluon propagator. In the space-like region, due to the lack of available experimental data above Q2~0.2 GeV2, we only give our results for intermediate energies and make no comparison. In the time-like region, our results agree reasonably well with the available experimental data at moderate energies, including the CLEO data and the m J/ψ result.

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