The Y (4260) and Y (4360) enhancements within coupled-channels

Puzzling structures have been observed in the charmonium energy region, namely the Y (4260) and the Y (4360), that cannot be easily accommodated within quark model frameworks. The proximity of nearby dominant hadronic thresholds suggests that they play an important role in the formation of the enhan...

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Bibliographic Details
Published inEPJ Web of Conferences Vol. 199; p. 4003
Main Author Coito, Susana
Format Journal Article Conference Proceeding
LanguageEnglish
Published Les Ulis EDP Sciences 2019
Subjects
Channels
Quark models
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Summary:Puzzling structures have been observed in the charmonium energy region, namely the Y (4260) and the Y (4360), that cannot be easily accommodated within quark model frameworks. The proximity of nearby dominant hadronic thresholds suggests that they play an important role in the formation of the enhancements. We present results of an unitarized effective Lagrangian model, where mesonic loops, equivalent to coupled-channels, and charmonium vectors ψ interplay to generate line-shapes and poles.
ISSN:2100-014X
2101-6275
2100-014X
DOI:10.1051/epjconf/201919904003