Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2007-03-17
JHEP 0705:006,2007
Physics
High Energy Physics
High Energy Physics - Phenomenology
16 pages, 3 figures, JHEP style. First part of data fitting changed, conclusions not modified
Scientific paper
10.1088/1126-6708/2007/05/006
A phenomenological analysis of radiative $V\to P\gamma$ and $P\to V\gamma$ decays is performed with the purpose of determining the gluonic content of the $\eta$ and $\eta^\prime$ wave functions. Our results show that within our model there is no evidence for a gluonium contribution in the $\eta$, $Z_\eta^2=0.00\pm 0.12$, or the $\eta^\prime$, $Z_{\eta^\prime}^2=0.04\pm 0.09$. In terms of a mixing angle description this corresponds to $\phi_P=(41.4\pm 1.3)^\circ$ and $|\phi_{\eta^\prime G}|=(12\pm 13)^\circ$. In addition, the $\eta$-$\eta^\prime$ mixing angle is found to be $\phi_P=(41.5\pm 1.2)^\circ$ if we don't allow for a gluonium component.
Escribano Rafel
Nadal J.
No associations
LandOfFree
On the gluon content of the eta and eta' mesons does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with On the gluon content of the eta and eta' mesons, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On the gluon content of the eta and eta' mesons will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-212948