Dielectron widths of the S-, D-vector bottomonium states

Details Dielectron widths of the S-, D-vector bottomonium states Dielectron widths of the S-, D-vector bottomonium states

2009-03-21

arxiv.org/abs/0903.3643v3

Phys.Atom.Nucl.73:138-149,2010

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages, no figures

Scientific paper

10.1134/S1063778810010163

The dielectron widths of $\Upsilon(nS) (n=1,...,7)$ and vector decay constants are calculated using the Relativistic String Hamiltonian with a universal interaction. For $\Upsilon(nS) (n=1,2,3)$ the dielectron widths and their ratios are obtained in full agreement with the latest CLEO data. For $\Upsilon(10580)$ and $\Upsilon(11020)$ a good agreement with experiment is reached only if the 4S--3D mixing (with a mixing angle $\theta=27^\circ\pm 4^\circ$) and 6S--5D mixing (with $\theta=40^\circ\pm 5^\circ$) are taken into account. The possibility to observe higher "mixed $D$-wave" resonances, $\tilde\Upsilon(n {}^3D_1)$ with $n=3,4,5$ is discussed. In particular, $\tilde\Upsilon(\approx 11120)$, originating from the pure $5 {}^3D_1$ state, can acquire a rather large dielectron width, $\sim 130$ eV, so that this resonance may become manifest in the $e^+e^-$ experiments. On the contrary, the widths of pure $D$-wave states are very small, $\Gamma_{ee}(n{}^3 D_1) \leq 2$ eV.

Affiliated with

Also associated with

No associations

Rating

Dielectron widths of the S-, D-vector bottomonium states 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 Dielectron widths of the S-, D-vector bottomonium states, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dielectron widths of the S-, D-vector bottomonium states will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-636570