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DOE OSTI · 2335536

Anomalous interactions between mesons with nonzero spin and glueballs

Giacosa, Francesco (ORCID:0000000272909366)·Jafarzade, Shahriyar (ORCID:0000000243530760)·Pisarski, Robert D. (ORCID:0000000278624759)
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Abstract

Topologically nontrivial fluctuations control the anomalous interactions for the η and η ′ pseudoscalar mesons. We consider the anomalous interactions for mesons with higher spin, the heterochiral nonets with J P C = 1 + − and 2 − + . Under the approximation of a dilute gas of instantons, the mixing angle between nonstrange 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. Published by the American Physical Society 2024

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73 NUCLEAR PHYSICS AND RADIATION PHYSICSAnomaliesClassical solutions in field theoryNonperturbative effects in field theoryParticle decaysParticle mixing & oscillationsPhenomenologyQuantum chromodynamicsSigma modelsStrong interactionTopology

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Giacosa, Francesco (ORCID:0000000272909366), Jafarzade, Shahriyar (ORCID:0000000243530760), Pisarski, Robert D. (ORCID:0000000278624759). 2024-04-08. Anomalous interactions between mesons with nonzero spin and glueballs. https://doi.org/10.1103/physrevd.109.l071502

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