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Advances in High Energy Physics
Volume 2019, Article ID 7650678, 5 pages
Research Article

Chromopolarizability of Charmonium and ππ Final State Interaction Revisited

School of Mathematics and Physics, University of Science and Technology Beijing, Beijing 100083, China

Correspondence should be addressed to Yun-Hua Chen; nc.ude.btsu@nehchy

Received 16 January 2019; Accepted 7 March 2019; Published 23 April 2019

Guest Editor: Tao Luo

Copyright © 2019 Yun-Hua Chen. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The publication of this article was funded by SCOAP3.


The chromopolarizability of a quarkonium describes the quarkonium’s interaction with soft gluonic fields and can be measured in the heavy quarkonium decay. Within the framework of dispersion theory which considers the final state interaction (FSI) model-independently, we analyze the transition and obtain the chromopolarizability and the parameter . It is found that the FSI plays an important role in extracting the chromopolarizability from the experimental data. The obtained chromopolarizability with the FSI is reduced to about 1/2 of that without the FSI. With the FSI, we determine the chromopolarizability and the parameter Our results could be useful in studying the interactions of charmonium with light hadrons.