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arXiv · 0805.4499

Strong decays and dipion transitions of Upsilon(5S)

Yu. A. Simonov·A. I. Veselov
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Abstract

Dipion transitions of $Υ(nS)$ 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 $Γ_{ππ} (5, n')$ as well as pionless decay widths $Γ_{BB} (5S), Γ_{BB^*} (5S), Γ_{B^*B^*}(5S)$ and $Γ_{KK} (5, n')$ were calculated and are in a reasonable agreement with experiment. The experimental $ππ$ spectra for $(5,1)$ and (5,2) transitions are well reproduced taking into account FSI in the $ππ$.

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Yu. A. Simonov, A. I. Veselov. 2008-09-30. Strong decays and dipion transitions of Upsilon(5S). https://doi.org/10.1016/j.physletb.2008.12.001

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