Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2010-02-18
Physics
High Energy Physics
High Energy Physics - Phenomenology
8 pages, 1 figure
Scientific paper
Hindered magnetic dipole transitions $\Upsilon(nS)\to \gamma \eta_b(n'S)$ are studied in the covariant light-front approach. Compared with the allowed magnetic dipole transitions, we find that results for hindered magnetic dipole transitions are sensitive to heavy quark mass and shape parameters of the light-front wave functions. It is possible to tune the parameters so that the predictions of branching fractions of $\Upsilon(2S,3S)\to\gamma\eta_b$ are consistent with the recent experimental data, but the relevant decay constant of $\eta_b$ is much smaller than that of $\Upsilon(1S)$. We also generalize the investigation to the charmonium sector and find the the same conclusion.
No associations
LandOfFree
Hindered magnetic dipole transition in the covariant light-front approach 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 Hindered magnetic dipole transition in the covariant light-front approach, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hindered magnetic dipole transition in the covariant light-front approach will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-406583