W. Parker

activity

20152023

most citedTest of lepton universality in beauty-quark decays

372 citations · 5.3k across the 89 of their papers we have counts for

collaborators

Showing 2018Show all

22 papers · 1 filter

hep-ex2018★ 9 cited

Measurement of the branching fraction and $C P$ asymmetry in $B^{+} \to J / ψ ρ^{+}$ decays

LHCb collaboration, R. Aaij, C. Abellán Beteta +844

The branching fraction and direct $C P$ asymmetry of the decay $B^{+} \to J / ψ ρ^{+}$ are measured using proton-proton collision data collected with the LHCb detector at cent…

hep-ex2018★ 18 cited

Search for the rare decay $B^{+} \to μ^{+} μ^{-} μ^{+} ν_{μ}$

LHCb collaboration, R. Aaij, C. Abellán Beteta +844

A search for the rare leptonic decay $B^{+} \to μ^{+} μ^{-} μ^{+} ν_{μ}$ is performed using proton-proton collision data corresponding to an integrated luminosity of $4.7$ fb$…

hep-ex2018★ 76 cited

Observation of two resonances in the $Λ_{b}^{0} π^{\pm}$ systems and precise measurement of $Σ_{b}^{\pm}$ and $Σ_{b}^{*\pm}$ properties

LHCb collaboration, R. Aaij, C. Abellán Beteta +837

The first observation of two structures consistent with resonances in the final states $Λ_{b}^{0} π^{-}$ and $Λ_{b}^{0} π^{+}$ is reported using samples of $pp$ collision data collected by the…

hep-ex2018★ 76 cited

First measurement of charm production in fixed-target configuration at the LHC

LHCb collaboration, R. Aaij, B. Adeva +834

The first measurement of heavy-flavour production by the LHCb experiment in its fixed-target mode is presented. The production of $J / ψ$ and $D^{0}$ mesons is studied with beams of pr…

hep-ex2018★ 22 cited

Measurement of the charm-mixing parameter $y_{C P}$

LHCb collaboration, R. Aaij, C. Abellán Beteta +841

A measurement of the charm-mixing parameter $y_{C P}$ using $D^{0} \to K^{+} K^{-}$ , $D^{0} \to π^{+} π^{-}$ , and $D^{0} \to K^{-} π^{+}$ decays is reported. The $D^{0}$ mesons are required to originat…

hep-ex2018★ 9 cited

Measurement of the branching fractions of the decays $D^{+} \to K^{-} K^{+} K^{+}$ , $D^{+} \to π^{-} π^{+} K^{+}$ and $D_{s}^{+} \to π^{-} K^{+} K^{+}$

LHCb collaboration, R. Aaij, C. Abellán Beteta +841

The branching fractions of the doubly Cabibbo-suppressed decays $D^{+} \to K^{-} K^{+} K^{+}$ , $D^{+} \to π^{-} π^{+} K^{+}$ and $D_{s}^{+} \to π^{-} K^{+} K^{+}$ are measured using the decays…

hep-ex2018★ 69 cited

Measurement of antiproton production in $pHe$ collisions at $s_{N N} = 110$ GeV

LHCb collaboration, R. Aaij, C. Abellán Beteta +839

The cross-section for prompt antiproton production in collisions of protons with an energy of $6.5$ TeV incident on helium nuclei at rest is measured with the LHCb experiment from…

hep-ex2018★ 114 cited

Measurement of the lifetime of the doubly charmed baryon $Ξ_{cc}^{++}$

LHCb collaboration, R. Aaij, B. Adeva +832

The first measurement of the lifetime of the doubly charmed baryon $Ξ_{cc}^{++}$ is presented, with the signal reconstructed in the final state $Λ_{c}^{+} K^{-} π^{+} π^{+}$ . The data sample…

hep-ex2018★ 8 cited

Measurement of the relative $B^{-} \to D^{0} / D^{* 0} / D^{** 0} μ^{-} ν_{μ}$ branching fractions using $B^{-}$ mesons from $B_{s 2}^{* 0}$ decays

LHCb collaboration, R. Aaij, B. Adeva +834

The decay of the narrow resonance $B_{s 2}^{* 0} \to B^{-} K^{+}$ can be used to determine the $B^{-}$ momentum in partially reconstructed decays without any assumpti…

hep-ex2018★ 24 cited

Search for $C P$ violation in $Λ_{b}^{0} \to p K^{-}$ and $Λ_{b}^{0} \to p π^{-}$ decays

LHCb collaboration, R. Aaij, B. Adeva +834

A search for $C P$ violation in $Λ_{b}^{0} \to p K^{-}$ and $Λ_{b}^{0} \to p π^{-}$ decays is presented using a sample of $pp$ collisions collected with the LHCb detector and corresponding to…

hep-ex2018★ 168 cited

First observation of the doubly charmed baryon decay $Ξ_{cc}^{++} \to Ξ_{c}^{+} π^{+}$

LHCb collaboration, R. Aaij, B. Adeva +834

The doubly charmed baryon decay $Ξ_{cc}^{++} \to Ξ_{c}^{+} π^{+}$ is observed for the first time, with a statistical significance of $5.9 σ$ , confirming a recent observation…

hep-ex2018★ 15 cited

Observation of $B_{s}^{0} \to D^{* 0} ϕ$ and search for $B^{0} \to D^{0} ϕ$ decays

LHCb collaboration, R. Aaij, B. Adeva +807

The first observation of the $B_{s}^{0} \to D^{* 0} ϕ$ decay is reported, with a significance of more than seven standard deviations, from an analysis of $pp$ collision data…

hep-ex2018★ 16 cited

Observation of the decay $B_{s}^{0} \to D^{0} K^{+} K^{-}$

LHCb collaboration, R. Aaij, B. Adeva +808

The first observation of the $B_{s}^{0} \to D^{0} K^{+} K^{-}$ decay is reported, together with the most precise branching fraction measurement of the mode $B^0 \to \overline{D}^0…

hep-ex2018★ 26 cited

Measurement of angular and CP asymmetries in $D^{0} \to π^{+} π^{-} μ^{+} μ^{-}$ and $D^{0} \to K^{+} K^{-} μ^{+} μ^{-}$ decays

LHCb collaboration, R. Aaij, B. Adeva +832

The first measurements of the forward-backward asymmetry of the dimuon pair ( $A_{F B}$ ), the triple-product asymmetry ( $A_{2 ϕ}$ ), and the charge-parity-conjugation asymmetry ($A_{CP…

hep-ex2018★ 3 cited

Observation of the decay $B_{s}^{0} \to χ_{c 2} K^{+} K^{-}$ in the $φ$ mass region

LHCb collaboration, R. Aaij, B. Adeva +828

The $B_{s}^{0} \to χ_{c 2} K^{+} K^{-}$ decay mode is observed and its branching fraction relative to the corresponding $χ_{c 1}$ decay mode, in a $\pm 15 \textrm{MeV}/c^…

hep-ex2018★ 14 cited

Observation of the decay $Λ_{b}^{0} \to ψ (2 S) p π^{-}$

LHCb collaboration, R. Aaij, B. Adeva +834

The Cabibbo-suppressed decay $Λ_{b}^{0} \to ψ (2 S) p π^{-}$ is observed for the first time using a data sample collected by the LHCb experiment in proton-proton collisions correspondi…

hep-ex2018★ 119 cited

Observation of a new $Ξ_{b}^{-}$ resonance

R. Aaij, B. Adeva, M. Adinolfi +806

From samples of $pp$ collision data collected by the LHCb experiment at $s = 7$ , $8$ and $13$ TeV corresponding to integrated luminosities of 1.0, 2.0 and 1.5 fb $^{- 1}$ , respe…

hep-ex2018★ 40 cited

Measurement of $C P$ asymmetries in two-body $B_{(s)}^{0}$ -meson decays to charged pions and kaons

LHCb collaboration, R. Aaij, B. Adeva +786

The time-dependent $C P$ asymmetries in $B^{0} \to π^{+} π^{-}$ and $B_{s}^{0} \to K^{+} K^{-}$ decays are measured using a data sample of $pp$ collisions corresponding to an integrated luminosity…

hep-ex2018★ 29 cited

Search for CP violation using triple product asymmetries in $Λ_{b}^{0} \to p K^{-} π^{+} π^{-}$ , $Λ_{b}^{0} \to p K^{-} K^{+} K^{-}$ and $Ξ_{b}^{0} \to p K^{-} K^{-} π^{+}$ decays

LHCb collaboration, R. Aaij, B. Adeva +791

A search for $C$ P and $P$ violation using triple-product asymmetries is performed with $Λ_{b}^{0} \to p K^{-} π^{+} π^{-}$ , $Λ_{b}^{0} \to p K^{-} K^{+} K^{-}$ and $Ξ^{0}_{b}\to pK^{-}K^{-…

hep-ex2018★ 16 cited

Observation of the decay $Λ_{b}^{0} \to Λ_{c}^{+} p p π^{-}$

LHCb collaboration, R. Aaij, B. Adeva +787

The decay $Λ_{b}^{0} \to Λ_{c}^{+} p p π^{-}$ is observed using $pp$ collision data collected with the LHCb detector at centre-of-mass energies of $s =$ 7 and 8 TeV, corresp…

hep-ex2018★ 22 cited

Measurement of forward top pair production in the dilepton channel in $pp$ collisions at $s = 13$ TeV

LHCb collaboration, R. Aaij, B. Adeva +791

Forward top quark pair production is studied in $pp$ collisions in the $μ e b$ final state using a data sample corresponding to an integrated luminosity of 1.93 fb $^{- 1}$ collected w…

hep-ex2018★ 14 cited

A search for weakly decaying b-flavored pentaquarks

LHCb collaboration, R. Aaij, B. Adeva +790

Investigations of the existence of pentaquark states containing a single $b$ (anti)quark decaying weakly into four specific final states J/ $ψ K^{+} π^{-} p$ , J/ $ψ K^{-} π^{-} p$ , J/$ψK^- π^+…

Measurement of the branching fraction and CP asymmetry in B+→J/ψρ+ decays

Search for the rare decay B+→μ+μ−μ+νμ​

Observation of two resonances in the Λb0​π± systems and precise measurement of Σb±​ and Σb∗±​ properties

First measurement of charm production in fixed-target configuration at the LHC

Measurement of the charm-mixing parameter yCP​

Measurement of the branching fractions of the decays D+→K−K+K+, D+→π−π+K+ and Ds+​→π−K+K+

Measurement of antiproton production in pHe collisions at sNN​​=110 GeV

Measurement of the lifetime of the doubly charmed baryon Ξcc++​

Measurement of the relative B−→D0/D∗0/D∗∗0μ−νμ​ branching fractions using B− mesons from Bs2∗0​ decays

Search for CP violation in Λb0​→pK− and Λb0​→pπ− decays

First observation of the doubly charmed baryon decay Ξcc++​→Ξc+​π+

Observation of Bs0​→D∗0ϕ and search for B0→D0ϕ decays

Observation of the decay Bs0​→D0K+K−

Measurement of angular and CP asymmetries in D0→π+π−μ+μ− and D0→K+K−μ+μ− decays

Observation of the decay Bs0​​→χc2​K+K− in the φ mass region

Observation of the decay Λb0​→ψ(2S)pπ−

Observation of a new Ξb−​ resonance

Measurement of CP asymmetries in two-body B(s)0​-meson decays to charged pions and kaons

Search for CP violation using triple product asymmetries in Λb0​→pK−π+π−, Λb0​→pK−K+K− and Ξb0​→pK−K−π+ decays

Observation of the decay Λb0​→Λc+​pp​π−

Measurement of forward top pair production in the dilepton channel in pp collisions at s​=13 TeV

A search for weakly decaying b-flavored pentaquarks

Measurement of the branching fraction and $C P$ asymmetry in $B^{+} \to J / ψ ρ^{+}$ decays

Search for the rare decay $B^{+} \to μ^{+} μ^{-} μ^{+} ν_{μ}$

Observation of two resonances in the $Λ_{b}^{0} π^{\pm}$ systems and precise measurement of $Σ_{b}^{\pm}$ and $Σ_{b}^{*\pm}$ properties

Measurement of the charm-mixing parameter $y_{C P}$

Measurement of the branching fractions of the decays $D^{+} \to K^{-} K^{+} K^{+}$ , $D^{+} \to π^{-} π^{+} K^{+}$ and $D_{s}^{+} \to π^{-} K^{+} K^{+}$

Measurement of antiproton production in $pHe$ collisions at $s_{N N} = 110$ GeV

Measurement of the lifetime of the doubly charmed baryon $Ξ_{cc}^{++}$

Measurement of the relative $B^{-} \to D^{0} / D^{* 0} / D^{** 0} μ^{-} ν_{μ}$ branching fractions using $B^{-}$ mesons from $B_{s 2}^{* 0}$ decays

Search for $C P$ violation in $Λ_{b}^{0} \to p K^{-}$ and $Λ_{b}^{0} \to p π^{-}$ decays

First observation of the doubly charmed baryon decay $Ξ_{cc}^{++} \to Ξ_{c}^{+} π^{+}$

Observation of $B_{s}^{0} \to D^{* 0} ϕ$ and search for $B^{0} \to D^{0} ϕ$ decays

Observation of the decay $B_{s}^{0} \to D^{0} K^{+} K^{-}$

Measurement of angular and CP asymmetries in $D^{0} \to π^{+} π^{-} μ^{+} μ^{-}$ and $D^{0} \to K^{+} K^{-} μ^{+} μ^{-}$ decays

Observation of the decay $B_{s}^{0} \to χ_{c 2} K^{+} K^{-}$ in the $φ$ mass region

Observation of the decay $Λ_{b}^{0} \to ψ (2 S) p π^{-}$

Observation of a new $Ξ_{b}^{-}$ resonance

Measurement of $C P$ asymmetries in two-body $B_{(s)}^{0}$ -meson decays to charged pions and kaons

Search for CP violation using triple product asymmetries in $Λ_{b}^{0} \to p K^{-} π^{+} π^{-}$ , $Λ_{b}^{0} \to p K^{-} K^{+} K^{-}$ and $Ξ_{b}^{0} \to p K^{-} K^{-} π^{+}$ decays

Observation of the decay $Λ_{b}^{0} \to Λ_{c}^{+} p p π^{-}$

Measurement of forward top pair production in the dilepton channel in $pp$ collisions at $s = 13$ TeV