Pseudoscalar glueball mass from η-η′-G mixing

Hai Yang Cheng, Hsiang Nan Li, Keh Fei Liu

Research output: Contribution to journalArticlepeer-review

83 Scopus citations

Abstract

We deduce the mass of the pseudoscalar glueball G from an η-η′-G mixing formalism based on the anomalous Ward identity for transition matrix elements. With the inputs from the recent KLOE experiment, we find a solution for the pseudoscalar glueball mass around (1.4±0.1)GeV, which is fairly insensitive to a range of inputs with or without Okubo-Zweig-Iizuka-rule violating effects. This affirms that η(1405), having a large production rate in the radiative J/Ψ decay and not seen in γγ reactions, is indeed a leading candidate for the pseudoscalar glueball. Other relevant quantities including the anomaly and pseudoscalar density matrix elements are obtained. The decay widths for G→γγ , ℓ+ℓ- are also predicted.

Original languageEnglish
Article number014024
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume79
Issue number1
DOIs
StatePublished - Jan 5 2009

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

Fingerprint

Dive into the research topics of 'Pseudoscalar glueball mass from η-η′-G mixing'. Together they form a unique fingerprint.

Cite this