A1 Journal article (refereed)
Quark Structure of the X (4500), X (4700) and χc(4P,5P) States (2021)

Ferretti, J., & Santopinto, E. (2021). Quark Structure of the X (4500), X (4700) and χc(4P,5P) States. Frontiers in Physics, 9, Article 642028. https://doi.org/10.3389/fphy.2021.642028

JYU authors or editors

Publication details

All authors or editors: Ferretti, J.; Santopinto, E.

Journal or series: Frontiers in Physics

eISSN: 2296-424X

Publication year: 2021

Volume: 9

Article number: 642028

Publisher: Frontiers Media SA

Publication country: Switzerland

Publication language: English

DOI: https://doi.org/10.3389/fphy.2021.642028

Publication open access: Openly available

Publication channel open access: Open Access channel

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/77110

Web address of parallel published publication (pre-print): https://arxiv.org/abs/2104.00918


We study some of the main properties (masses and open-flavor strong decay widths) of 4P and 5P charmonia. While there are two candidates for the χc0(4P,5P) states, the X(4500) and X(4700), the properties of the other members of the χc(4P,5P) multiplets are still completely unknown. With this in mind, we start to explore the charmonium interpretation for these mesons. Our second goal is to investigate if the apparent mismatch between the Quark Model (QM) predictions for χc0(4P,5P) states and the properties of the X(4500) and X(4700) mesons can be overcome by introducing threshold corrections in the QM formalism. According to our coupled-channel model results for the threshold mass shifts, the χc0(5P)→X(4700) assignment is unacceptable, while the χc0(4P)→X(4500) or X(4700) assignments cannot be completely ruled out.

Keywords: particle physics; nuclear physics; quarks

Free keywords: quark model; unquenched quark model; 3P0 model; exotic states; strong decays; charmonia; charmonia phenomenology

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Last updated on 2021-12-07 at 14:33