M. Smith

activity

20122026

most citedTest of lepton universality using

B^{+} \to K^{+} ℓ^{+} ℓ^{-}

decays

952 citations · 27.4k across the 529 of their papers we have counts for

collaborators

Showing 2012 · hep-exShow all

24 papers · 2 filters

hep-ex2012★ 17 cited

Measurement of CP observables in B0 -> D K*0 with D -> K+ K-

LHCb collaboration, R. Aaij, C. Abellan Beteta +625

The decay B0 -> D K*0 and the charge conjugate mode are studied using 1.0fb-1 of pp collision data collected by the LHCb experiment at sqrt(s) = 7TeV in 2011. The CP asymmetry betw…

hep-ex2012★ 53 cited

Measurement of J/psi production in pp collisions at sqrt(s)=2.76 TeV

LHCb collaboration, R. Aaij, C. Abellan Beteta +624

The production of J/psi mesons is studied with the LHCb detector using data from pp collisions at sqrt(s)=2.76 TeV corresponding to an integrated luminosity of 71 nb^-1. The differ…

hep-ex2012★ 391 cited

First evidence for the decay Bs -> mu+ mu-

LHCb collaboration, R. Aaij, C. Abellan Beteta +617

A search for the rare decays Bs->mu+mu- and B0->mu+mu- is performed using data collected in 2011 and 2012 with the LHCb experiment at the Large Hadron Collider. The data samples co…

hep-ex2012★ 26 cited

Measurement of the time-dependent CP asymmetry in B0 -> J/ψ KS0 decays

LHCb collaboration, R. Aaij, C. Abellan Beteta +622

This Letter reports a measurement of the CP violation observables S_J/ψKS0 and C_J/ψKS0 in the decay channel B0 -> J/ψ KS0 performed with 1.0/fb of pp collisions at sqrt(s) = 7 TeV…

hep-ex2012★ 62 cited

First observation of the decay $B_{s 2}^{} (5840)^{0} \to B^{+} K^{-}$ and studies of excited $B_{s}$ mesons

LHCb collaboration, R. Aaij, C. Abellan Beteta +621

Properties of the orbitally excited (L=1) $B_{s}$ states are studied using 1.0 fb $^{- 1}$ of pp collisions at $s = 7$ TeV collected with the LHCb detector. The first observation…

hep-ex2012★ 91 cited

Observation of D0-D0bar oscillations

LHCb collaboration, R. Aaij, C. Abellan Beteta +616

We report a measurement of the time-dependent ratio of D0->K+pi- to D0->K-pi+ decay rates in D*+-tagged events using 1.0 fb^{-1} of integrated luminosity recorded by the LHCb exper…

hep-ex2012★ 59 cited

Measurement of the ratio of branching fractions BR(B0 -> K0 gamma)/BR(Bs0 -> phi gamma) and the direct CP asymmetry in B0 -> K0 gamma

LHCb collaboration, R. Aaij, C. Abellan Beteta +621

The ratio of branching fractions of the radiative B decays B0 -> K*0 gamma and Bs0 phi gamma has been measured using an integrated luminosity of 1.0 fb-1 of pp collision data colle…

hep-ex2012★ 44 cited

Evidence for the decay $B^{0} \to J / ψ ω$ and measurement of the relative branching fractions of $B_{s}^{0}$ meson decays to $J / ψ η$ and $J / ψ η^{^{'}}$

LHCb Collaboration, R. Aaij, C. Abellan Beteta +620

First evidence of the $B^{0} \to J / ψ ω$ decay is found and the $B_{s}^{0} \to J / ψ η$ and $B_{s}^{0} \to J / ψ η^{'}$ decays are studied using a dataset corresponding to an integrated lumino…

hep-ex2012★ 42 cited

A model-independent Dalitz plot analysis of $B^{\pm} \to D K^{\pm}$ with $D \to K_{S}^{0} h^{+} h^{-}$ ( $h = π, K$ ) decays and constraints on the CKM angle $γ$

LHCb collaboration, R. Aaij, C. Abellan Beteta +617

A binned Dalitz plot analysis of $B^{\pm} \to D K^{\pm}$ decays, with $D \to K_{S}^{0} π^{+} π^{-}$ and $D \to K_{S}^{0} K^{+} K^{-}$ , is performed to measure the CP-violating observables $…

hep-ex2012★ 28 cited

Measurement of the $B^{0}$ -- $B ˉ^{0}$ oscillation frequency $Δ m_{d}$ with the decays $B^{0} \to D^{-} π^{+}$ and $B^{0} \to J / ψ K^{* 0}$

LHCb collaboration, R. Aaij, C. Abellan Beteta +621

The $B^{0}$ -- $B ˉ^{0}$ oscillation frequency $Δ m_{d}$ is measured by the LHCb experiment using a dataset corresponding to an integrated luminosity of $1.0$ fb $^{- 1}$ of proton-proton…

hep-ex2012★ 76 cited

Measurement of the D+/- production asymmetry in 7 TeV pp collisions

LHCb collaboration, R. Aaij, C. Abellan Beteta +619

The asymmetry in the production cross-section σof D+/- mesons, A_P = (σ(D+) - σ(D-))/(σ(D+) + σ(D-)), is measured in bins of pseudorapidity ηand transverse momentum p_T within the…

hep-ex2012★ 46 cited

First observation of the decay $B^{+} \to π^{+} μ^{+} μ^{-}$

LHCb Collaboration, R. Aaij, C. Abellan Beteta +621

A discovery of the rare decay $B^{+} \to π^{+} μ^{+} μ^{-}$ is presented. This decay is observed for the first time, with 5.2 $σ$ significance. The observation is made usin…

hep-ex2012★ 17 cited

First evidence for the annihilation decay mode $B^{+} \to D_{s}^{+} ϕ$

LHCb collaboration, R. Aaij, C. Abellan Beteta +617

Evidence for the hadronic annihilation decay mode $B^{+} \to D_{s}^{+} ϕ$ is found with greater than $3 σ$ significance. The branching fraction and \CP asymmetry are measured to be \ma…

hep-ex2012★ 28 cited

Measurement of the fraction of \Y1S originating from \chib1P decays in $pp$ collisions at $\sqrt{s} = 7\tev$

LHCb collaboration, R. Aaij, C. Abellan Beteta +616

The production of \chib1P mesons in $pp$ collisions at a centre-of-mass energy of $7\tev$ is studied using $32\invpb$ of data collected with the \lhcb detector. The $\chib1P$ meson…

hep-ex2012★ 31 cited

Observation of the decay B0 -> D0bar K+ K- and evidence for Bs -> D0bar K+ K-

LHCb collaboration, R. Aaij, C. Abellan Beteta +621

The first observation of the decay B0 -> D0bar K+ K- is reported from an analysis of 0.62 fb-1 of pp collision data collected with the LHCb detector. Its branching fraction is meas…

hep-ex2012★ 287 cited

Implications of LHCb measurements and future prospects

LHCb collaboration, A. Bharucha, I. I. Bigi +763

During 2011 the LHCb experiment at CERN collected 1.0 fb-1 of sqrt{s} = 7 TeV pp collisions. Due to the large heavy quark production cross-sections, these data provide unprecedente…

hep-ex2012★ 26 cited

Measurement of the $B_{s}^{0} \to J / ψ K^{* 0}$ branching fraction and angular amplitudes

LHCb collaboration, R. Aaij, C. Abellan Beteta +616

A search for the decay $B_{s}^{0} \to J / ψ K^{* 0}$ with $K^{* 0} \to K^{-} π^{+}$ is performed with 0.37 fb $^{- 1}$ of $pp$ collisions at $s$ = 7 TeV collected by the LHCb…

hep-ex2012★ 48 cited

Measurement of the Ds+ - Ds- production asymmetry in 7 TeV pp collisions

LHCb collaboration, R. Aaij, C. Abellan Beteta +605

Heavy quark production in 7 TeV centre-of-mass energy pp collisions at the LHC is not necessarily flavour symmetric. The production asymmetry, A_P, between Ds+ and Ds- mesons is st…

hep-ex2012★ 41 cited

Measurement of prompt hadron production ratios in $pp$ collisions at $s =$ 0.9 and 7 TeV

LHCb collaboration, R. Aaij, C. Abellan Beteta +619

The charged-particle production ratios $p ˉ / p$ , $K^{-} / K^{+}$ , $π^{-} / π^{+}$ , $(p + p ˉ) / (π^{+} + π^{-})$ , $(K^{+} + K^{-}) / (π^{+} + π^{-})$ and $(p + p ˉ) / (K^{+} + K^{-})$ are measured with t…

hep-ex2012★ 34 cited

Measurement of relative branching fractions of B decays to $ψ (2 S)$ and $J / ψ$ mesons

LHCb Collaboration

The relative rates of B-meson decays into $J / ψ$ and $ψ (2 S)$ mesons are measured for the three decay modes in pp collisions recorded with the LHCb detector. The ratios of branching…

hep-ex2012★ 114 cited

Observation of excited Lambda_b0 baryons

LHCb collaboration, R. Aaij, C. Abellan Beteta +615

Using pp collision data corresponding to 1.0 fb-1 integrated luminosity collected by the LHCb detector, two narrow states are observed in the Lambda_b0pi+pi- spectrum with masses 5…

hep-ex2012★ 88 cited

Measurement of the isospin asymmetry in $B \to K^{(*)} μ^{+} μ^{-}$ decays

LHCb collaboration, R. Aaij, C. Abellan Beteta +615

The isospin asymmetries of $B \to K^{(*)} μ^{+} μ^{-}$ decays and the partial branching fractions of $B^{0} \to K^{0} μ^{+} μ^{-}$ and $B^{+} \to K^{*+} μ^{+} μ^{-}$ are measured as a function of the di-m…

hep-ex2012★ 198 cited

Strong constraints on the rare decays Bs -> mu+ mu- and B0 -> mu+ mu-

LHCb collaboration, R. Aaij, C. Abellan Beteta +607

A search for Bs -> mu+ mu- and B0 -> mu+ mu- decays is performed using 1.0 fb^-1 of pp collision data collected at \sqrt{s}=7 TeV with the LHCb experiment at the Large Hadron Colli…

hep-ex2012★ 123 cited

Inclusive $W$ and $Z$ production in the forward region at $s = 7$ TeV

LHCb collaboration, R. Aaij, C. Abellan Beteta +606

Measurements of inclusive $W$ and $Z$ boson production cross-sections in $pp$ collisions at $s = 7$ TeV using final states containing muons are presented. The data sample corr…

Measurement of CP observables in B0 -> D K*0 with D -> K+ K-

Measurement of J/psi production in pp collisions at sqrt(s)=2.76 TeV

First evidence for the decay Bs -> mu+ mu-

Measurement of the time-dependent CP asymmetry in B0 -> J/ψ KS0 decays

First observation of the decay Bs2∗​(5840)0→B∗+K− and studies of excited Bs​ mesons

Observation of D0-D0bar oscillations

Measurement of the ratio of branching fractions BR(B0 -> K*0 gamma)/BR(Bs0 -> phi gamma) and the direct CP asymmetry in B0 -> K*0 gamma

Evidence for the decay B0→J/ψω and measurement of the relative branching fractions of Bs0​ meson decays to J/ψη and J/ψη′

A model-independent Dalitz plot analysis of B±→DK± with D→KS0​h+h− (h=π,K) decays and constraints on the CKM angle γ

Measurement of the B0--Bˉ0 oscillation frequency Δmd​ with the decays B0→D−π+ and B0→J/ψK∗0

Measurement of the D+/- production asymmetry in 7 TeV pp collisions

First observation of the decay B+→π+μ+μ−

First evidence for the annihilation decay mode B+→Ds+​ϕ

Measurement of the fraction of \Y1S originating from \chib1P decays in pp collisions at $\sqrt{s} = 7\tev$

Observation of the decay B0 -> D0bar K+ K- and evidence for Bs -> D0bar K+ K-

Implications of LHCb measurements and future prospects

Measurement of the Bs0​→J/ψK∗0 branching fraction and angular amplitudes

Measurement of the Ds+ - Ds- production asymmetry in 7 TeV pp collisions

Measurement of prompt hadron production ratios in pp collisions at s​= 0.9 and 7 TeV

Measurement of relative branching fractions of B decays to ψ(2S) and J/ψ mesons

Observation of excited Lambda_b0 baryons

Measurement of the isospin asymmetry in B→K(∗)μ+μ− decays

Strong constraints on the rare decays Bs -> mu+ mu- and B0 -> mu+ mu-

Inclusive W and Z production in the forward region at s​=7 TeV

First observation of the decay $B_{s 2}^{} (5840)^{0} \to B^{+} K^{-}$ and studies of excited $B_{s}$ mesons

Measurement of the ratio of branching fractions BR(B0 -> K0 gamma)/BR(Bs0 -> phi gamma) and the direct CP asymmetry in B0 -> K0 gamma

Evidence for the decay $B^{0} \to J / ψ ω$ and measurement of the relative branching fractions of $B_{s}^{0}$ meson decays to $J / ψ η$ and $J / ψ η^{^{'}}$

A model-independent Dalitz plot analysis of $B^{\pm} \to D K^{\pm}$ with $D \to K_{S}^{0} h^{+} h^{-}$ ( $h = π, K$ ) decays and constraints on the CKM angle $γ$

Measurement of the $B^{0}$ -- $B ˉ^{0}$ oscillation frequency $Δ m_{d}$ with the decays $B^{0} \to D^{-} π^{+}$ and $B^{0} \to J / ψ K^{* 0}$

First observation of the decay $B^{+} \to π^{+} μ^{+} μ^{-}$

First evidence for the annihilation decay mode $B^{+} \to D_{s}^{+} ϕ$

Measurement of the fraction of \Y1S originating from \chib1P decays in $pp$ collisions at $\sqrt{s} = 7\tev$

Measurement of the $B_{s}^{0} \to J / ψ K^{* 0}$ branching fraction and angular amplitudes

Measurement of prompt hadron production ratios in $pp$ collisions at $s =$ 0.9 and 7 TeV

Measurement of relative branching fractions of B decays to $ψ (2 S)$ and $J / ψ$ mesons

Measurement of the isospin asymmetry in $B \to K^{(*)} μ^{+} μ^{-}$ decays

Inclusive $W$ and $Z$ production in the forward region at $s = 7$ TeV