Speaker
Francesco Giacosa
(Jan Kochanowski University of Kielce)
Description
We consider the anomalous interactions for mesons with higher spin, the heterochiral nonets with $J^{P C} = 1^{+ -}$ and $2^{- +}$.
Based on the recent results of Ref. Phys.Rev.D 109 (2024) 7, L071502, under the approximation of a dilute gas of instantons the mixing angle between non-strange and strange mesons decreases strongly as $J$ increases, and oscillates in sign. Anomalous interactions also open up new, rare decay channels. For glueballs, anomalous interactions indicate that the $X(2600)$ state is primarily gluonic.
Primary authors
Francesco Giacosa
(Jan Kochanowski University of Kielce)
Robert D. Pisarski
Shahriyar Jafarzade
