Measurements of J/psi decays into phi pi^0, phi eta, and phi eta^prime
M. Ablikim, et al. (BES Collaboration)
TL;DR
This paper reports new measurements of J/psi decays into phi eta and phi eta' with higher branching fractions than previously known, and sets an upper limit for the phi pi^0 decay mode, based on extensive BESII data.
Contribution
The study provides the first precise measurements of J/psi decays into phi eta and phi eta' with improved accuracy, and establishes an upper limit for the phi pi^0 decay mode.
Findings
Branching fractions for J/psi--> phi eta and phi eta' are significantly higher than previous measurements.
An upper limit for the branching fraction of J/psi--> phi pi^0 was determined.
Results are based on 58 million J/psi events detected with BESII.
Abstract
Based on 5.8x10^7 J/psi events detected in BESII, the branching fractions of J/psi--> phi eta and phi eta^prime are measured for different eta and eta^prime decay modes. The results are significantly higher than previous measurements. An upper limit on B(J/psi--> phi pi^0) is also obtained.
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