Pseudoscalars and the η′ in the holographic soft-wall model

Pseudoscalar mesons and glueballs are studied in a model based on the AdS/QCD correspondence. Glueball masses are obtained in the pure-gauge case, while the mixing between pseudoscalar glueballs and singlet pseudoscalar mesons produces the expected mass of the η′ meson. The topological susceptibilit...

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Bibliographic Details
Published in:EPJ Web of conferences 2022, Vol.270, p.30
Main Authors: Giannuzzi, Floriana, Nicotri, Stefano
Format: Article
Language:English
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Summary:Pseudoscalar mesons and glueballs are studied in a model based on the AdS/QCD correspondence. Glueball masses are obtained in the pure-gauge case, while the mixing between pseudoscalar glueballs and singlet pseudoscalar mesons produces the expected mass of the η′ meson. The topological susceptibility is computed as a function of the quark mass. The model reproduces partial conservation of axial current, the anomaly equation, and the Witten-Veneziano relation.
ISSN:2100-014X
2100-014X
DOI:10.1051/epjconf/202227000030