| Issue |
EPJ Web Conf.
Volume 270, 2022
QCD@Work 2022 - International Workshop on Quantum Chromodynamics - Theory and Experiment
|
|
|---|---|---|
| Article Number | 00030 | |
| Number of page(s) | 7 | |
| DOI | https://doi.org/10.1051/epjconf/202227000030 | |
| Published online | 17 November 2022 | |
https://doi.org/10.1051/epjconf/202227000030
Pseudoscalars and the η′ in the holographic soft-wall model
INFN – Istituto Nazionale di Fisica Nucleare – Sezione di Bari, via Orabona 4, 70125, Bari, Italy
* e-mail: floriana.giannuzzi@ba.infn.it
** e-mail: nicotri@infn.it
Published online: 17 November 2022
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.
© The Authors, published by EDP Sciences, 2022
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