David C. Johnson

activity

20122016

J / ψ p

resonances consistent with pentaquark states in

Λ_{b}^{0} \to J / ψ K^{-} p

decays

1.3k citations · 2.9k across the 24 of their papers we have counts for

collaborators

Showing 2013 · hep-exShow all

10 papers · 2 filters

hep-ex2013★ 20 cited

Measurement of the $B ˉ_{s}^{0} \to D_{s}^{-} D_{s}^{+}$ and $B ˉ_{s}^{0} \to D^{-} D_{s}^{+}$ effective lifetimes

LHCb collaboration, R. Aaij, B. Adeva +672

The first measurement of the effective lifetime of the $B ˉ_{s}^{0}$ meson in the decay $B ˉ_{s}^{0} \to D_{s}^{-} D_{s}^{+}$ is reported using a proton-proton collision dataset, correspondi…

hep-ex2013★ 41 cited

Measurements of indirect CP asymmetries in $D^{0} \to K^{-} K^{+}$ and $D^{0} \to π^{-} π^{+}$ decays

LHCb collaboration, R. Aaij, B. Adeva +656

A study of indirect CP violation in $D^{0}$ mesons through the determination of the parameter $A_{Γ}$ is presented using a data sample of $pp$ collisions, corresponding to an integrate…

hep-ex2013

Search for the decay D0 to π+ π- μ+ μ-

LHCb collaboration, R. Aaij, B. Adeva +656

A search for the D0 to π+ π- μ+ μ- decay, where the muon pair does not originate from a resonance, is performed using proton-proton collision data corresponding to an integrated lu…

hep-ex2013★ 17 cited

Searches for $B_{(s)}^{0} \to J / ψ p p$ and $B^{+} \to J / ψ p p π^{+}$ decays

LHCb collaboration, R. Aaij, B. Adeva +650

The results of searches for $B_{(s)}^{0} \to J / ψ p p$ and $B^{+} \to J / ψ p p π^{+}$ decays are reported. The analysis is based on a data sample, corre…

hep-ex2013★ 55 cited

Search for the rare decay $D^{0} \to μ^{+} μ^{-}$

LHCb collaboration, R. Aaij, C. Abellan Beteta +634

A search for the rare decay $D^{0} \to μ^{+} μ^{-}$ is performed using a data sample, corresponding to an integrated luminosity of 0.9 fb $^{- 1}$ , of $pp$ collisions collected at a centre-…

hep-ex2013★ 149 cited

First observation of CP violation in the decays of Bs mesons

LHCb collaboration, R. Aaij, C. Abellan Beteta +631

Using pp collision data, corresponding to an integrated luminosity of $1.0 fb^{- 1}$ , collected by LHCb in 2011 at a center-of-mass energy of 7 TeV, we report the measureme…

hep-ex2013★ 35 cited

First measurement of the CP-violating phase in $B_{s}^{0} \to ϕϕ$ decays

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

A first flavour-tagged measurement of the time-dependent CP-violating asymmetry in $B_{s}^{0} \to ϕϕ$ decays is presented. In this decay channel, the CP-violating weak phase arises due…

hep-ex2013★ 27 cited

Observations of $B_{s}^{0} \to ψ (2 S) η$ and $B_{(s)}^{0} \to ψ (2 S) π^{+} π^{-}$ decays

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

First observations of the $B_{s}^{0} \to ψ (2 S) η$ , $B^{0} \to ψ (2 S) π^{+} π^{-}$ and $B_{s}^{0} \to ψ (2 S) π^{+} π^{-}$ decays are made using a dataset corresponding to an int…

hep-ex2013★ 97 cited

Measurement of the Λ_b^0, Ξ_b^- and Ω_b^- baryon masses

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

Bottom baryons decaying to a J/ψ meson and a hyperon are reconstructed using 1.0 fb^{-1} of data collected in 2011 with the LHCb detector. Significant Λ_b^0 \rightarrow J/ψΛ, Ξ_b^-…

hep-ex2013★ 81 cited

Measurements of the Lambda_b0 -> J/psi Lambda decay amplitudes and the Lambda_b0 polarisation in pp collisions at sqrt(s) = 7 TeV

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

An angular analysis of Lambda_b0 -> J/psi Lambda decays is performed using a data sample corresponding to 1.0 fb^{-1} collected in pp collisions at sqrt(s) = 7 TeV with the LHCb de…

Measurement of the Bˉs0​→Ds−​Ds+​ and Bˉs0​→D−Ds+​ effective lifetimes

Measurements of indirect CP asymmetries in D0→K−K+ and D0→π−π+ decays