Regular Article - Theoretical Physics
A description of charmonia decays within the QCD factorisation framework
Physik-Department, Technische Universität München, James-Franck-Str. 1, 85748, Garching, Germany
Accepted: 1 June 2022
Published online: 26 July 2022
Decays into octet baryon-antibaryons pairs are studied within the QCD factorisation framework. The next-to-leading power correction to the leading-order decay amplitude is calculated for the first time. The phenomenological analysis also includes the interference with the electromagnetic decay . The branching fractions and the angular coefficients are obtained with an accuracy of about . The obtained results allow us to conclude that the calculated amplitudes provide a dominant contribution and therefore QCD factorisation provides a suitable basis for understanding of these decays.
© The Author(s) 2022
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