The effects of charmonium on the properties of the 1(++) hidden charm poles in effective field theory

In this study, the properties of the J(PC) = 1(++) hidden charm poles are analyzed under the variation of the bare 2P charmonium mass within the effective field theory proposed in Ref. [1]. The main focus of the current work is on the pole trajectory of the chi(c1)(2P) charmonium dressed by the D (D) over bar* meson loops. It is shown that the trajectories of the pole change radically for values of the bare charmonium mass above a certain value and also depending on how close the pole is to the threshold. (C) 2021 Elsevier B.V. All rights reserved.