R. Santinelli

activity

20102012

most citedMeasurement of J/psi production in pp collisions at sqrt(s)=7 TeV

343 citations · 2.1k across the 32 of their papers we have counts for

collaborators

32 papers

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★ 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★ 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★ 105 cited

Differential branching fraction and angular analysis of the $B^{+} \to K^{+} μ^{+} μ^{-}$ decay

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

The angular distribution and differential branching fraction of the decay $B^{+} \to K^{+} μ^{+} μ^{-}$ are studied with a dataset corresponding to $1.0 fb^{- 1}$ of…

hep-ex2012★ 21 cited

Measurement of the effective $B_{s}^{0} \to K^{+} K^{-}$ lifetime

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

A precise determination of the effective $B_{s}^{0} \to K^{+} K^{-}$ lifetime can be used to constrain contributions from physics beyond the Standard Model in the $B_{s}^{0}$ meson sys…

hep-ex2012★ 25 cited

Measurement of the Bs effective lifetime in the J/psi f0(980) final state

LHCb Collaboration, R. Aaij, C. Abellan Beteta +618

The effective lifetime of the Bs meson in the decay mode Bs->J/ψf0(980) is measured using 1.0/fb of data collected in pp collisions at sqrt(s) = 7 TeV with the LHCb detector. The r…

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★ 163 cited

Observation of double charm production involving open charm in pp collisions at $s$ =7 TeV

LHCb Collaboration, R. Aaij, C. Abellan Beteta +589

The production of $J / ψ$ mesons accompanied by open charm, and of pairs of open charm hadrons are observed in pp collisions at a centre-of-mass energy of 7 TeV using an integrated l…

hep-ex2012★ 93 cited

Analysis of the resonant components in Bs->J/ψπ+π-

The LHCb collaboration, R. Aaij, C. Abellan Beteta +592

The decay Bs->J/ψπ+π- can be exploited to study CP violation. A detailed understanding of its structure is imperative in order to optimize its usefulness. An analysis of this three…

hep-ex2012★ 76 cited

Measurement of the ratio of prompt $χ_{c}$ to $J / ψ$ production in $pp$ collisions at $s = 7$ TeV

LHCb Collaboration, R. Aaij, C. Abellan Beteta +591

The prompt production of charmonium $χ_{c}$ and $J / ψ$ states is studied in proton-proton collisions at a centre-of-mass energy of $s = 7$ TeV at the Large Hadron Collider. The…

hep-ex2012★ 25 cited

Measurements of the branching fractions of the decays $B_{s}^{0} \to D_{s}^{\mp} K^{\pm}$ and $B_{s}^{0} \to D_{s}^{-} π^{+}$

The LHCb collaboration, R. Aaij, C. Abellan Beteta +592

The decay mode $\B^{0}_{s} \to D^{\mp}_{s} K^{\pm} $ allows for one of the theoretically cleanest measurements of the CKM angle $γ$ through the study of time-dependent $\ensuremath…

hep-ex2012★ 83 cited

First observation of the decay Bc+ to J/psi pi+pi-pi+

LHCb collaboration, R. Aaij, C. Abellan Beteta +592

The decay Bc+ --> J/psi pi+pi-pi+ is observed for the first time, using 0.8 fb-1 of pp collisions at sqrt{s}=7 TeV collected by the LHCb experiment. The ratio of branching fraction…

hep-ex2012★ 18 cited

Measurement of the ratio of branching fractions BR(B0 -> K*0 gamma)/BR(Bs0 -> phi gamma)

LHCb Collaboration, R. Aaij, C. Abellan Beteta +594

The ratio of branching fractions of the radiative B decays B0 -> K*0 gamma and Bs0 -> phi gamma has been measured using 0.37 fb-1 of pp collisions at a centre of mass energy of sqr…

hep-ex2012★ 101 cited

Measurement of Upsilon production in pp collisions at \sqrt{s} = 7 TeV

The LHCb Collaboration, R. Aaij, C. Abellan Beteta +594

The production of Upsilon(1S), Upsilon(2S) and Upsilon(3S) mesons in proton-proton collisions at the centre-of-mass energy of sqrt(s)=7 TeV is studied with the LHCb detector. The a…

hep-ex2012★ 69 cited

Measurement of the cross-section ratio $σ (χ_{c 2}) / σ (χ_{c 1})$ for prompt $χ_{c}$ production at $s = 7$ TeV

LHCb Collaboration, R. Aaij, C. Abellan Beteta +589

The prompt production of the charmonium $χ_{c 1}$ and $χ_{c 2}$ mesons has been studied in proton-proton collisions at the Large Hadron Collider at a centre-of-mass energy of $\sqrt{…

hep-ex2012★ 34 cited

Measurement of the CP violating phase ϕ_s in Bs->J/ψf0(980)

LHCb Collaboration, R. Aaij, C. Abellan Beteta +585

Measurement of mixing-induced CP violation in Bs decays is of prime importance in probing new physics. So far only the channel Bs->J/ψϕ has been used. Here we report on a measureme…

hep-ex2011★ 73 cited

Measurement of b-hadron masses

LHCb Collaboration, R. Aaij, C. Abellan Beteta +583

Measurements of b-hadron masses are performed with the exclusive decay modes B+ -> J/psi K+, B0 -> J/psi K*0, B0 -> J/psi K0S, B0_s -> J/psi phi and Lambda_b -> J/psi Lambda using…

hep-ex2011★ 20 cited

Observation of Bs -> J/ψf'2(1525) in J/ψK+K- final states

LHCb Collaboration, R. Aaij, C. Abellan Beteta +583

The decay Bs -> J/ψK+ K- is investigated using 0.16/fb of data collected with the LHCb detector using 7 TeV pp collisions. Although the J/ψϕ channel is well known, final states at…

hep-ex2011★ 68 cited

Measurement of the B^0_s - \bar{B}^0_s oscillation frequency Delta m_s in B^0_s -> D_s^-(3) pi decays

LHCb Collaboration, R. Aaij, C. Abellan Beteta +579

The B^0_s-\bar{B}^0_s oscillation frequency Delta m_s is measured with 36 pb^{-1} of data collected in pp collisions at \sqrt{s} = 7 TeV by the LHCb experiment at the Large Hadron…

hep-ex2011★ 90 cited

Differential branching fraction and angular analysis of the decay $B^{0} \to K^{* 0} μ^{+} μ^{-}$

LHCb Collaboration, R. Aaij, C. Abellan Beteta +585

The angular distributions and the partial branching fraction of the decay $B^{0} \to K^{* 0} μ^{+} μ^{-}$ are studied using an integrated luminosity of $0.37 f b^{- 1}$ of data c…

hep-ex2011★ 23 cited

First observation of the decay $B ˉ_{s}^{0} \to D^{0} K^{* 0}$ and a measurement of the ratio of branching fractions $\frac{B ( B ˉ _{s}^{0} \to D ^{0} K ^{* 0} )}{B ( B ˉ ^{0} \to D ^{0} ρ ^{0} )}$

LHCb Collaboration, R. Aaij, C. Abellan Beteta +578

The first observation of the decay $B ˉ_{s}^{0} \to D^{0} K^{* 0}$ using $pp$ data collected by the LHCb detector at a centre-of-mass energy of 7 TeV, corresponding to an integrated l…

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

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

Differential branching fraction and angular analysis of the B+→K+μ+μ− decay

Measurement of the effective Bs0​→K+K− lifetime