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The exclusive processes $e^+e^-\to VP$, in the region of which the finalstate meson momentum is much larger than the hadronic scale $\Lambda_{QCD}$,are studied in the framework of PQCD approach based on the $k_T$ factorization.Including the transverse momentum distribution in the light cone wavefunctions, our results are consistent with the experimental measurements.According to our results, many processes have large enough cross sections to bedetected at $\sqrt s=10.58$ GeV. The $s$ dependence of the cross section hasbeen directly studied and our result indicates that the $1/s^3$ scaling is morefavored than $1/s^4$. We also find that the gluonic contribution for theprocesses involving $\eta^{(')}$ is tiny.Comment: 17 pages, including 5 figures, Revtex

physical review. d. particles, fields, gravitation, and cosmology/physical review. d, particles, fields, gravitation, and cosmology

Exclusive processes<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mi>e</mml:mi><mml:mo>+</mml:mo></mml:msup><mml:msup><mml:mi>e</mml:mi><mml:mo>−</mml:mo></mml:msup><mml:mo>→</mml:mo><mml:mi>V</mml:mi><mml:mi>P</mml:mi></mml:math>in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mi>k</mml:mi><mml:mi>T</mml:mi></mml:msub></mml:math>factorization

Exclusive processese+e−→VPinkTfactorization