Υ(5S) decays into BB and BBπ

Details Υ(5S) decays into BB and BBπ Υ(5S) decays into BB and BBπ

2008-05-29

arxiv.org/abs/0805.4518v1

JETP Lett.88:5-7,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages

Scientific paper

10.1134/S002136400813002X

Two- and three-body decays of $\Upsilon (5S)$ into $BB, $$ BB^*, $ $ B^*B^*,$ $ B_sB_s, $ $B_sB_s^*, $ $B_s^* B_s^*$ and $BB^*\pi, B^*B^*\pi$ are evaluated using the theory, developed earlier for dipion bottomonium transitions. The theory contains only two parameters, vertex masses $M_{br}$ and $M_\omega$, known from dipion spectra and width. Predicted values of $\Gamma_{tot}(5S)$ and six partial widths $\Gamma_k(5S), k=BB, BB^*,...$ are in agreement with experiment. The decay widths $\Gamma_{5S}(\pi BB^*)$ and $\Gamma_{5S}(\pi B^*B^*)$ are also calculated and found to be of the order of 10 keV.

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