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

作者：Jin Dan^*; Yang Ya-Dong

来源：Chinese Physics C, 2012, 36(10): 941-946.

DOI：10.1088/1674-1137/36/10/004

• electromagnetic form factor
• perturbative QCD
• analytical running coupling
• twist-3 corrections
• IR finite gluon propagator

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 alpha(s)(Q(2)) and an infrared (IR) finite gluon propagator. In the space-like region, due to the lack of available experimental data above Q(2) similar to 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 J/psi result.

• 出版日期2012-10
• 单位华中师范大学