Abstract
We analyze the exclusive pseudoscalar D[s]+D[s]- pair production in e+e- annihilations at s=10.6GeV using a nonfactorized PQCD with the light-front wave function that goes beyond the peaking approximation. We compare our nonfactorized analysis with the usual factorized analysis based on the peaking approximation in the calculation of the cross section for the heavy meson pair production. We also discuss the higher helicity contribution to the cross section. Our analysis provides a constraint on the size of quark transverse momentum inside the D meson from the recent Belle data, σexp (e+e-→D+D-)<0.04[pb].
| Original language | English |
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| Article number | 114020 |
| Journal | Physical Review D - Particles, Fields, Gravitation and Cosmology |
| Volume | 73 |
| Issue number | 11 |
| DOIs | |
| State | Published - 2006 |