This erratum corrects measurements of the prompt and secondary (from-b).

The angular distribution of the dimuon system of the decays.

C. Baesso, M. Cruz Torres, C. Gobel, J. Molina Rodriguez are associated to Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil Y. Xie, J. Yu are associated to Center for High Energy Physics, Tsinghua University, Beijing, China D. A. Milanes, I. A. Monroy, J. A. Rodriguez Lopez are associated to LPNHE, Universite Pierre et Marie Curie, Universite Paris Diderot, CNRS/IN2P3, Paris, France O. Grunberg, M. Hes, C. Vos, R. Waldi are associated to Physikalisches Institut, Ruprecht-Karls-Universitat Heidelberg, Heidelberg, Germany T. Likhomanenko, A. Malinin, V. Shevchenko, A. Ustyuzhanin are associated to Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia D. Derkach, E. Khairullin, T. Likhomanenko, A. Ustyuzhanin are associated to Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia F. Martinez Vidal, A. Oyanguren, P. Ruiz Valls, C. Sanchez Mayordomo are associated to Universitat de Barcelona, Barcelona, Spain C. J. G. Onderwater is associated to Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands Deceased (T. M. Karbach)

Amplitude models are applied to studies of resonance structure in ${D}^{0}\ensuremath{\rightarrow}{K}_{S}^{0}{K}^{\ensuremath{-}}{\ensuremath{\pi}}^{+}$ and ${D}^{0}\ensuremath{\rightarrow}{K}_{S}^{0}{K}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$ decays using $pp$ collision data corresponding to an integrated luminosity of $3.0\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ collected by the LHCb experiment. Relative magnitude and phase information is determined, and coherence factors and related observables are computed for both the whole phase space and a restricted region of $100\text{ }\text{ }\mathrm{MeV}/{c}^{2}$ around the ${K}^{*}(892{)}^{\ifmmode\pm\else\textpm\fi{}}$ resonance. Two formulations for the $K\ensuremath{\pi}\text{ }S$-wave are used, both of which give a good description of the data. The ratio of branching fractions $\mathcal{B}({D}^{0}\ensuremath{\rightarrow}{K}_{S}^{0}{K}^{+}{\ensuremath{\pi}}^{\ensuremath{-}})/\mathcal{B}({D}^{0}\ensuremath{\rightarrow}{K}_{S}^{0}{K}^{\ensuremath{-}}{\mathrm{\ensuremath{\pi}}}^{+})$ is measured to be $0.655\ifmmode\pm\else\textpm\fi{}0.004(\mathrm{stat})\ifmmode\pm\else\textpm\fi{}0.006(\mathrm{syst})$ over the full phase space and $0.370\ifmmode\pm\else\textpm\fi{}0.003(\mathrm{stat})\ifmmode\pm\else\textpm\fi{}0.012(\mathrm{syst})$ in the restricted region. A search for $CP$ violation is performed using the amplitude models and no significant effect is found. Predictions from SU(3) flavor symmetry for ${K}^{*}(892)K$ amplitudes of different charges are compared with the amplitude model results.

The oscillation frequency, [Formula: see text], of [Formula: see text] mesons is measured using semileptonic decays with a [Formula: see text] or [Formula: see text] meson in the final state. The data sample corresponds to 3.0[Formula: see text] of pp collisions, collected by the LHCb experiment at centre-of-mass energies [Formula: see text] = 7 and 8[Formula: see text]. A combination of the two decay modes gives [Formula: see text], where the first uncertainty is statistical and the second is systematic. This is the most precise single measurement of this parameter. It is consistent with the current world average and has similar precision.

A search for B ( s ) 0 → K S 0 K ∗ (892) 0 decays is performed using pp collision data, corresponding to an integrated luminosity of 1 . 0 fb −1 , collected with the LHCb detector at a centre-of-mass energy of 7 TeV. The B s 0 → K S 0 K ∗ (892) 0 decay is observed for the first time, with a significance of 7.1 standard deviations. The branching fraction is measured to be ℬ(B_s^0→K^0K^∗(892)^0)+ℬ(B_s^0→K^0K^∗(892)^0)=(16.4± 3.4± 2.3)× 10^-6, where the first uncertainty is statistical and the second is systematic. No evidence is found for the decay B 0 → K S 0 K ∗ (892) 0 and an upper limit is set on the branching fraction, ℬ(B^0→K^0K^∗(892)^0)+ℬ(B^0→K^0K^∗(892)^0)<0.96× 10^-6 , at 90

bstract The B s 0 → J / ψϕϕ decay is observed in pp collision data corresponding to an integrated luminosity of 3 fb −1 recorded by the LHCb detector at centre-of-mass energies of 7 TeV and 8 TeV. This is the first observation of this decay channel, with a statistical significance of 15 standard deviations. The mass of the B s 0 meson is measured to be 5367 . 08 ± 0 . 38 ± 0 . 15 MeV/c 2 . The branching fraction ratio ℬ( B s 0 → J / ψϕϕ )/ℬ( B s 0 → J / ψϕ ) is measured to be 0.0115 ± 0.0012 − 0.0009 + 0.0005 . In both cases, the first uncertainty is statistical and the second is systematic. No evidence for non-resonant B s 0 → J / ψϕK + K − or B s 0 → J / ψK + K − K + K − decays is found.

Associated production of bottomonia and open charm hadrons in $pp$ collisions at $\sqrt{s}=7$ and $8$TeV is observed using data corresponding to an integrated luminosity of 3$fb^{-1}$ accumulated with the LHCb detector. The observation of five combinations, $\Upsilon(1S)D^0$, $\Upsilon(2S)D^0$, $\Upsilon(1S)D^+$, $\Upsilon(2S)D^+$ and $\Upsilon(1S)D^+_{s}$, is reported. Production cross-sections are measured for $\Upsilon(1S)D^0$ and $\Upsilon(1S)D^+$ pairs in the forward region. The measured cross-sections and the differential distributions indicate the dominance of double parton scattering as the main production mechanism. This allows a precise measurement of the effective cross-section for double parton scattering.

A study of the decay $D^{0}\rightarrow K^{-}\pi^{+}\mu^{+}\mu^{-}$ is performed using data collected by the LHCb detector in proton-proton collisions at a centre-of-mass energy of 8 TeV, corresponding to an integrated luminosity of 2.0 fb$^{-1}$. Decay candidates with muon pairs that have an invariant mass in the range 675--875 MeV$/c^2$ are considered. This region is dominated by the $\rho^{0}$ and $\omega$ resonances. The branching fraction in this range is measured to be ${\cal B}$($D^{0}\rightarrow K^{-}\pi^{+}\mu^{+}\mu^{-}$ ) = $( 4.17 \pm 0.12(stat) \pm 0.40(syst) )\times10^{-6}$. This is the first observation of the decay $D^{0}\rightarrow K^{-}\pi^{+}\mu^{+}\mu^{-}$. Its branching fraction is consistent with the value expected in the Standard Model.

The first model-independent measurement of the charm mixing parameters in the decay D 0 → K S 0 π + π − is reported, using a sample of pp collision data recorded by the LHCb experiment, corresponding to an integrated luminosity of 1.0 fb −1 at a centre-of-mass energy of 7 TeV. The measured values are [ x=(-0.86± 0.53± 0.17)×10^-2,; y=(+0.03± 0.46± 0.13)×10^-2, ] where the first uncertainties are statistical and include small contributions due to the external input for the strong phase measured by the CLEO collaboration, and the second uncertainties are systematic.

The B (s) (0) -> aEuro parts per thousand J/psi I center dot I center dot decay is observed in pp collision data corresponding to an integrated luminosity of 3 fb(-1) recorded by the LHCb detector at centre-of-mass energies of 7 TeV and 8 TeV. This is the first observation of this decay channel, with a statistical significance of 15 standard deviations. The mass of the B (s) (0) meson is measured to be 5367.08 +/- 0.38 +/- 0.15 MeV/c(2). The branching fraction ratio a"not sign(B (s) (0) -> aEuro parts per thousand J/psi I center dot I center dot)/a"not sign(B (s) (0) -> aEuro parts per thousand J/psi I center dot) is measured to be 0.0115 +/- A 0.0012 (-aEuro parts per thousand 0.0009) (+ 0.0005) . In both cases, the first uncertainty is statistical and the second is systematic. No evidence for non-resonant B (s) (0) -> aEuro parts per thousand J/psi I center dot K (+) K (-) or B (s) (0) -> aEuro parts per thousand J/psi K (+) K (-) K (+) K (-) decays is found.

bstract Invariant mass distributions of B + π − and B 0 π + combinations are investigated in order to study excited B mesons. The analysis is based on a data sample corresponding to 3.0 fb −1 of pp collision data, recorded by the LHCb detector at centre-of-mass energies of 7 and 8 TeV. Precise measurements of the masses and widths of the B 1 (5721) 0,+ and B 2 (5747) 0,+ states are reported. Clear enhancements, particularly prominent at high pion transverse momentum, are seen over background in the mass range 5850-6000 MeV in both B + π − and B 0 π + combinations. The structures are consistent with the presence of four excited B mesons, labelled B J (5840) 0,+ and B J (5960) 0,+ , whose masses and widths are obtained under different hypotheses for their quantum numbers.

A search is performed for the as yet unobserved baryonic $\Lambda_b \rightarrow \Lambda \eta^\prime$ and $\Lambda_b \rightarrow \Lambda \eta$ decays with 3$fb^{-1}$ of proton-proton collision data recorded by the LHCb experiment. The $B^0 \rightarrow K_S^0 \eta^\prime$ decay is used as a normalisation channel. No significant signal is observed for the $\Lambda_b \rightarrow \Lambda \eta^\prime$ decay. An upper limit is found on the branching fraction of $\mathcal{B}(\Lambda_b \rightarrow \Lambda \eta^\prime)<3.1\times10^{-6}$} at 90\% confidence level. Evidence is seen for the presence of the $\Lambda_b \rightarrow \Lambda \eta$ decay at the level of $3\sigma$ significance, with a branching fraction $\mathcal{B}(\Lambda_b \rightarrow \Lambda \eta)=(9.3^{+7.3}_{-5.3})\times10^{-6}$}.