Chiral symmetry and charmonium decays to two pseudoscalars

Johan Bijnens, Ilaria Jemos

Research output: Contribution to journalArticlepeer-review

Abstract

We apply hard pion Chiral Perturbation Theory to charmonium decays to pi pi, KK and eta eta. We first discuss why we expect to be able to provide results for the chiral logarithms in chi(c0) and chi(c2) decays to two pseudoscalars while for the decays from J/psi, psi(nS) and chi(c1) no simple prediction is possible. The leading chiral logarithm turns out to be absent for chi(c0), chi(c2) -> PP. This result is true for all fully chiral singlet states of spin zero and two.
Original languageEnglish
Article number137
JournalEuropean Physical Journal A. Hadrons and Nuclei
Volume47
Issue number11
DOIs
Publication statusPublished - 2011

Subject classification (UKÄ)

  • Subatomic Physics

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