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The first observation of the $B^0_stoetaeta$ decay is reported. The study is based on a sample of proton-proton collisions corresponding to $3.0$ ${rm fb^{-1}}$ of integrated luminosity collected with the LHCb detector. The significance of the signal is $6.4$ standard deviations. The branching fraction is measured to be $[3.31 pm 0.64,{rm (stat)} pm 0.28,{rm (syst)} pm 0.12,{rm (norm)}]times10^{-5}$, where the third uncertainty comes from the $B^{pm}toeta K^{pm}$ branching fraction that is used as a normalisation. In addition, the charge asymmetries of $B^{pm}toeta K^{pm}$ and $B^{pm}tophi K^{pm}$, which are control channels, are measured to be $(-0.2 pm1.3)%$ and $(+1.7pm1.3)%$, respectively. All results are consistent with theoretical expectations.
The $B^+ to D^{*-}K^+pi^+$ decay potentially provides an excellent way to investigate charm meson spectroscopy. The decay is searched for in a sample of proton-proton collision data collected with the LHCb detector at centre-of-mass energies of 7 and
A discovery of the rare decay $B^{+} rightarrow pi^{+} mu^{+} mu^{-}$ is presented. This decay is observed for the first time, with 5.2 $sigma$ significance. The observation is made using $pp$ collision data, corresponding to an integrated luminosity
The observation of the decay $varXi^{-}_{b}to J/psivarLambda K^{-}$ is reported, using a data sample corresponding to an integrated luminosity of $3~mathrm{fb}^{-1}$, collected by the LHCb detector in $pp$ collisions at centre-of-mass energies of $7$
We report the observation of $Upsilon(2S)togammaeta_{b}(1S)$ decay based on analysis of the inclusive photon spectrum of $24.7$ fb$^{-1}$ of $e^+ e^-$ collisions at the $Upsilon(2S)$ center-of-mass energy collected with the Belle detector at the KEKB
We report the observation of the baryonic B decay B0bar --> Lambda_c^+ anti-Lambda K- with a significance larger than 7 standard deviations based on 471x10^6$ BBbar pairs collected with the BABAR detector at the PEP-II storage ring at SLAC. We measur