Abstract
We study the reaction in the single tag mode and measure the differential cross section and the transition form factor in the momentum transfer range from 4 to . At the measured form factor exceeds the asymptotic limit predicted by perturbative QCD. The analysis is based on of integrated luminosity collected at PEP-II with the BABAR detector at center-of-mass energies near 10.6 GeV.
16 More- Received 29 May 2009
DOI:https://doi.org/10.1103/PhysRevD.80.052002
©2009 American Physical Society