Strong decays and dipion transitions of Upsilon(5S)

Details Strong decays and dipion transitions of Upsilon(5S) Strong decays and dipion transitions of Upsilon(5S)

2008-05-29

arxiv.org/abs/0805.4499v2

Phys.Lett.B671:55-59,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

16 pages, 6 figures

Scientific paper

10.1016/j.physletb.2008.12.001

Dipion transitions of $\Upsilon (nS)$ with $n=5, n'=1,2,3$ are studied using the Field Correlator Method, applied previously to dipion transitions with $n=2,3,4$ The only two parameters of effective Lagrangian were fixed in that earlier study, and total widths $\Gamma_{\pi\pi} (5, n')$ as well as pionless decay widths $\Gamma_{BB} (5S), \Gamma_{BB^*} (5S), \Gamma_{B^*B^*}(5S)$ and $\Gamma_{KK} (5, n')$ were calculated and are in a reasonable agreement with experiment. The experimental $\pi\pi$ spectra for $(5,1)$ and (5,2) transitions are well reproduced taking into account FSI in the $\pi\pi$.

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