Abstract
This paper is devoted to a phenomenological study of -meson production in high energy hadronic collisions in the framework of nonrelativistic QCD (NRQCD). We analyze all available experimental data on -meson production and extract nonperturbative NRQCD matrix elements by data fitting. It is shown that measured spectra of -mesons is mainly formed by color singlet components, while the ratio depends strongly on color octet matrix elements; this ratio becomes a highly sensitive tool to study contributions of the different NRQCD expansion terms. Predictions for -meson production cross sections, which are obtained using NRQCD scaling rules, are also given.
- Received 12 May 2014
DOI:https://doi.org/10.1103/PhysRevD.90.074021
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