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  • Letter
  • Open Access

Anomalous interactions between mesons with nonzero spin and glueballs

Francesco Giacosa*

Shahriyar Jafarzade†

Robert D. Pisarski‡

  • Institute of Physics, Jan Kochanowski University, ulica Uniwersytecka 7 Street, P-25-406 Kielce, Poland and Institute for Theoretical Physics, Goethe University Frankfurt, Max-von-Laue-Strasse 1, D-60438 Frankfurt am Main, Germany

  • Institute of Physics, Jan Kochanowski University, ulica Uniwersytecka 7 Street, P-25-406 Kielce, Poland; Institute of Radiation Problems, Ministry of Science and Education, B. Vahabzade 9 Street, AZ1143 Baku, Azerbaijan; and Center for Theoretical Physics, Khazar University, Mehseti 41 Street, Baku AZ1096, Azerbaijan

  • Department of Physics, Brookhaven National Laboratory, Upton, New York 11973, USA

  • *francesco.giacosa@gmail.com
  • †shahriyar.jzade@gmail.com
  • ‡pisarski@bnl.gov

Phys. Rev. D 109, L071502 – Published 8 April, 2024

DOI: https://doi.org/10.1103/PhysRevD.109.L071502

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 JPC=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.

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References (71)

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