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arXiv · 1812.09783

Excited $\rho$ mesons in $B_{c}\to\psi^{(')}KK_{S}$ decays

A. V. Luchinsky
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Abstract

In the presented paper exclusive decays $B_{c}\to J/\psi KK_{S}$ and $B_{c}\to\psi(2S)KK_{S}$ are analyzed. It is shown that contributions of the excited $\rho$ mesons should be taken into account to describe these decays. It is also shown that, unlike the corresponding $\tau$ lepton decays, peaks in $m_{KK_{S}}$ distributions caused by these resonances are clearly seen and can be easily separated. Theoretical predictions for the branching fractions of the reactions and $m_{\psi K}$ distributions are also presented.

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A. V. Luchinsky. 2018-12-23. Excited $\rho$ mesons in $B_{c}\to\psi^{(')}KK_{S}$ decays. https://doi.org/10.1103/physrevd.99.036019

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