Chiral symmetry and charmonium decays to two pseudoscalars

Johan Bijnens, Ilaria Jemos

Research output: Contribution to journalArticlepeer-review


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
Issue number11
Publication statusPublished - 2011

Subject classification (UKÄ)

  • Subatomic Physics


Dive into the research topics of 'Chiral symmetry and charmonium decays to two pseudoscalars'. Together they form a unique fingerprint.

Cite this