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The observation of the $Y(4140)$ structure in $B^\pm\rightarrow J/\psi\,\phiK^\pm$ decays produced in $\bar{p} p $ collisions at $\sqrt{s}=1.96~\TeV$ isreported with a statistical significance greater than 5 standard deviations. Afit to the $J/\psi\,\phi$ mass spectrum is performed assuming the presence of aBreit-Wigner resonance. The fit yields a signal of $19^{+6}_{-5}$ resonanceevents, and resonance mass and width of  $4143.4^{+2.9}_{-3.0}(\mathrm{stat})\pm0.6(\mathrm{syst})~\MeVcc$ and$15.3^{+10.4}_{-6.1}(\mathrm{stat})\pm2.5(\mathrm{syst})~\MeVcc$ respectively.The parameters of this resonance-like structure are consistent with valuesreported from an earlier CDF analysis.

Observation of the $Y(4140)$ structure in the $J/\psi\,\phi$ Mass Spectrum in $B^\pm\to J/\psi\,\phi K$ cays