1304.6298 (B. Pire et al.)

QCD description of charmonium plus light meson production in
antiproton-nucleon annihilation    [PDF]

B. Pire, K. Semenov-Tian-Shansky, L. Szymanowski

The associated production of a J/{\psi} and a \pi-meson in antiproton-nucleon annihilation is studied in the framework of QCD collinear factorization. In this approach, a hard subprocess responsible for the production of the heavy quark-antiquark pair factorizes from soft hadronic matrix elements, such as the antiproton (nucleon) distribution amplitude and the nucleon-to-pion (antiproton-to-pion) transition distribution amplitude. This reaction mechanism should dominate the forward and backward kinematical regions, where the cross sections are expected to be measurable in the set-up of the PANDA experiment at the GSI-Fair facility.

View original: http://arxiv.org/abs/1304.6298