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@ARTICLE{Dong:897427,
author = {Dong, Xiang-Kun and Baru, Vadim and Guo, Feng-Kun and
Hanhart, Christoph and Nefediev, Alexey and Zou, Bing-Song},
title = {{I}s the existence of a {J} / ψ {J} / ψ bound state
plausible?},
journal = {Science bulletin},
volume = {66},
number = {21},
issn = {2095-9273},
address = {[S.l.]},
publisher = {Science China Press},
reportid = {FZJ-2021-03781},
pages = {2462},
year = {2021},
abstract = {In a recent measurement LHCb reported pronounced structures
in the spectrum. One of the various possible explanations of
those is that they emerge from non-perturbative interactions
of vector charmonia. It is thus important to understand
whether it is possible to form a bound state of two
charmonia interacting through the exchange of gluons, which
hadronise into two pions at the longest distance. In this
paper, we demonstrate that, given our current understanding
of hadron-hadron interactions, the exchange of correlated
light mesons (pions and kaons) is able to provide sizeable
attraction to the di- system, and it is possible for two
mesons to form a bound state. As a side result we find from
an analysis of the data for the transition including both
and final state interactions an improved value for the
transition chromo-electric polarisability: , where the
uncertainty also includes the one induced by the final state
interactions.},
cin = {IAS-4 / IKP-3},
ddc = {500},
cid = {I:(DE-Juel1)IAS-4-20090406 / I:(DE-Juel1)IKP-3-20111104},
pnm = {5111 - Domain-Specific Simulation Data Life Cycle Labs
(SDLs) and Research Groups (POF4-511) / DFG project
196253076 - TRR 110: Symmetrien und Strukturbildung in der
Quantenchromodynamik (196253076)},
pid = {G:(DE-HGF)POF4-5111 / G:(GEPRIS)196253076},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000726409800011},
doi = {10.1016/j.scib.2021.09.009},
url = {https://juser.fz-juelich.de/record/897427},
}