Analytical calculation of heavy quarkonia production processes in computer

TL;DR

This paper presents an algorithm for the analytical calculation of heavy quarkonia production processes in high-energy experiments, enabling automated amplitude computations based on the factorization theorem.

Contribution

It introduces a novel computer algorithm for automatically calculating heavy quarkonia production amplitudes using the factorization theorem.

Findings

Calculated double charmonia production in bottomonia decays

Analyzed inclusive $_{J}$ meson production in pp-collisions

Demonstrated algorithm's application to experimental processes

Abstract

This report is devoted to the analytical calculation of heavy quarkonia production processes in modern experiments such as LHC, B-factories and superB-factories in computer. Theoretical description of heavy quarkonia is based on the factorization theorem. This theorem leads to special structure of the production amplitudes which can be used to develop computer algorithm which calculates these amplitudes automatically. This report is devoted to the description of this algorithm. As an example of its application we present the results of the calculation of double charmonia production in bottomonia decays and inclusive the $\chi_{cJ}$ mesons production in pp-collisions.