Excited $\rho$ mesons in $B_c\to {\psi }^{{(}^{\prime })}K{K}_S$ decays

Abstract

In the presented paper exclusive decays $B_c\to J/\psi K{K}_S$ and $B_c\to \psi (2S)K{K}_S$ 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 $m_{K{K}_S}$ 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.

6 pages, 5 figures

References in corpus (4)

• Measurement of the ratio of the production cross sections times branching fractions of Bc+/- to J/psi pi+/- and B+/- to J/psi K+/- and B(Bc+/- to J/psi pi+/- pi+/- pi-/+)/B(Bc+/- to J/psi pi+/-) in pp collisions at sqrt(s) = 7 TeV
• Evidence for the decay $B_c^{+}\to J/\psi 3{\pi }^{+}2{\pi }^{-}$
• The $B_c$-decays $B_c^{+}\to J/\psi {\pi }^{+}{\pi }^{-}{\pi }^{+}$, ${\eta }_c{\pi }^{+}{\pi }^{-}{\pi }^{+}$
• Observation of $B^{+}\to J/\psi 3{\pi }^{+}2{\pi }^{-}$ and $B^{+}\to \psi (2S){\pi }^{+}{\pi }^{+}{\pi }^{-}$ decays

Cited by in corpus (2)

• A dispersive analysis of the pion vector form factor and ${\tau }^{-}\to K^{-}{K}_S{\nu }_{\tau }$ decay
• Resonances $\rho (1450{)}^{+}$ and $\rho (1700{)}^{+}$ in $B\to DKK$ decays