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arXiv · 1304.6298

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

B. Pire·K. Semenov-Tian-Shansky·L. Szymanowski
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Abstract

The associated production of a $J/ψ$ and a $π$-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.

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B. Pire, K. Semenov-Tian-Shansky, L. Szymanowski. 2016-11-22. QCD description of charmonium plus light meson production in antiproton-nucleon annihilation. https://doi.org/10.1016/j.physletb.2013.06.015

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