Subthreshold photoproduction of charm
arXiv:hep-ph/0309250 · doi:10.1016/j.physletb.2004.05.013
Abstract
Charm photoproduction rates off nuclei below the nucleon threshold are estimated using the phenomenologically known structure functions both for x>1 and x<1. The rates rapidly fall below the threshold from values of the order 10 pb for Pb close to the threshold (at 7.5 GeV) down to values of the order 1 pb at 6 GeV.
11 p[ages, 7 figures