High Energy Physics - Phenomenology
[Submitted on 9 Jul 2015]
Title:Modification by pion exchange of near threshold resonance line shape in open heavy flavor channel
View PDFAbstract: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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