Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2010-12-06
Phys.Lett.B697:52-57,2011
Physics
High Energy Physics
High Energy Physics - Phenomenology
Slightly modified version to appear in Phys. Lett. B
Scientific paper
10.1016/j.physletb.2011.01.043
We show that the newly measured branching ratios of vector charmonia ($J/\psi$, $\psi^\prime$ and $\psi(3770))$ into $\gamma P$, where $P$ stands for light pseudoscalar mesons $\pi^0$, $\eta$, and $\eta^\prime$, can be well understood in the framework of vector meson dominance (VMD) in association with the $\eta_c$-$\eta(\eta^\prime)$ mixings due to the axial gluonic anomaly. These two mechanisms behave differently in $J/\psi$ and $\psi^\prime\to \gamma P$. A coherent understanding of the branching ratio patterns observed in $J/\psi(\psi^\prime)\to \gamma P$ can be achieved by self-consistently including those transition mechanisms at hadronic level. The branching ratios for $\psi(3770)\to\gamma P$ are predicted to be rather small.
No associations
LandOfFree
Understanding the radiative decays of vector charmonia to light pseudoscalar 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 Understanding the radiative decays of vector charmonia to light pseudoscalar mesons, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Understanding the radiative decays of vector charmonia to light pseudoscalar mesons will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-167788