We study the reaction e+e- --> e+e-pi0 and measure the gamma gamma* --> pi0 transition form factor in the momentum transfer range from 4 to 40 GeV^2. The analysis is based on 442 fb^-1 of integrated luminosity collected at PEP-II with the BABAR detector at e+e- center-of-mass energies near 10.6 GeV.
@article{arxiv.0905.4778,
title = {Measurement of the gamma gamma* --> pi0 transition form factor},
author = {The BABAR Collaboration and B. Aubert},
journal= {arXiv preprint arXiv:0905.4778},
year = {2010}
}
Comments
19 pages, 23 postscript figures, submitted to Phys. Rev. D