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arXiv · 1507.02639

Modification by pion exchange of near threshold resonance line shape in open heavy flavor channel

M. B. Voloshin
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Abstract

The effect of the pion exchange on the line shape of near threshold bottomoniumlike resonances decaying into an $S$ wave pair of $B^{(*)}$ mesons is considered. It is pointed out that this effect, parametrically enhanced by the heavy meson mass, can be of a practical significance in determining the parameters of the bottomoniumlike resonances such as the known $Z_b(10610)$ and $Z_b(10650)$ states.

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M. B. Voloshin. 2015-07-09. Modification by pion exchange of near threshold resonance line shape in open heavy flavor channel. https://doi.org/10.1103/physrevd.92.114003

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