Study of the decay $B_s^0\to J/\psi f_2^{\prime }(1525)$ in ${\mu }^{+}{\mu }^{-}{K}^{+}{K}^{-}$ final states

Abstract

We investigate the decay $B_s^0\to J/\psi K^{+}{K}^{-}$ for invariant masses of the $K^{+}{K}^{-}$ pair in the range $1.35<M(K^{+}{K}^{-})<2$ GeV. The data sample corresponds to an integrated luminosity of 10.4 fb${}^{-1}$ of $p\bar{p}$ collisions at $\sqrt{s}=1.96$ TeV accumulated with the D0 detector at the Fermilab Tevatron collider. From the study of the invariant mass and spin of the $K^{+}{K}^{-}$ system, we find evidence for the two-body decay \bsf and measure the relative branching fraction of the decays \bsf and \bsdec to be $R_{f_2^{\prime }/\varphi }=0.19\pm 0.05(\mathrm{stat})\pm 0.04(\mathrm{syst})$.

12 pages, 17 figures

References in corpus (3)

• PYTHIA 6.4 Physics and Manual
• Study of Polarization in B -> VT Decays
• Observation of Bs -> J/ψf'2(1525) in J/ψK+K- final states

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