Exclusive processes e{sup +}e{sup -}{yields}VP in k{sub T} factorization
- CCAST (World Laboratory), P.O. Box 8730, Beijing 100080 (China)
- Institute of High Energy Physics, CAS, P.O. Box 918(4), 100049 (China)
The exclusive processes e{sup +}e{sup -}{yields}VP, in the region of which the final state meson momentum is much larger than the hadronic scale {lambda}{sub QCD}, are studied in the framework of the perturbative quantum chromodynamics (PQCD) approach based on the k{sub T} factorization. Including the transverse momentum distribution in the light-cone wave functions, our results are consistent with the experimental measurements. According to our results, many processes have large enough cross sections to be detected at {radical}(s)=10.58 GeV. The s dependence of the cross section has been directly studied and our result indicates that the 1/s{sup 3} scaling is more favored than 1/s{sup 4}. We also find that the gluonic contribution for the processes involving {eta}{sup (')} is tiny.
- OSTI ID:
- 21020492
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 75, Issue 9; Other Information: DOI: 10.1103/PhysRevD.75.094020; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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