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- W2762846935 abstract "The Witten-Sakai-Sugimoto model, a top-down gauge/gravity model of large-$N_c$ low-energy QCD based on type-IIA string theory and $N_c$ D4 branes with chiral quarks added by probe D8 branes, involves only one dimensionless parameter, the 't Hooft coupling at its cutoff (Kaluza-Klein) scale. Although this cutoff scale is around 1 GeV, the model has turned out to be surprisingly predictive also quantitatively, reproducing masses of vector and axial vector mesons, their decay rates, as well as the anomalous mass of the eta' meson, all within 10-30% errors. Using it as a guide for glueball signatures, we have argued that it indicates that the meson $f_0(1710)$ may be a nearly pure glueball, with rather specific predictions for the still-to-be-measured 4pi and etaeta' decays. Here we present our new predictions for the decay pattern of the (very narrow) pseudoscalar glueball, which is closely related to the U(1)$_A$ problem that the model is in fact handling correctly." @default.
- W2762846935 created "2017-10-20" @default.
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- W2762846935 date "2017-10-07" @default.
- W2762846935 modified "2023-09-27" @default.
- W2762846935 title "Predictions for production and decay of the pseudoscalar glueball from the Witten-Sakai-Sugimoto model" @default.
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- W2762846935 hasPublicationYear "2017" @default.
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