R. H. O’Neil

activity

20212024

most citedObservation of an exotic narrow doubly charmed tetraquark

403 citations · 1.5k across the 29 of their papers we have counts for

collaborators

29 papers

hep-ex2024★ 2 cited

Measurement of $C P$ asymmetry in $B_{s}^{0} \to D_{s}^{\mp} K^{\pm}$ decays

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1119

A measurement of the $C P$ -violating parameters in $B_{s}^{0} \to D_{s}^{\mp} K^{\pm}$ decays is reported, based on the analysis of proton-proton collision data collected by the LHCb expe…

hep-ex2024★ 2 cited

Measurement of $ϕ (1020)$ meson production in fixed-target $p$ Ne collisions at $s_{N N}$ = 68.5 GeV

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1132

The first measurement of $ϕ (1020)$ meson production in fixed-target $p$ Ne collisions at $s_{N N} = 68.5$ GeV is presented. The $ϕ (1020)$ mesons are reconstructed in their $K^{+…

hep-ex2024★ 2 cited

Measurement of the CKM angle $γ$ in $B^{\pm} \to D K^{*} (892)^{\pm}$ decays

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1114

Measurements of $C P$ observables and the CKM angle $γ$ are performed in $B^{\pm} \to D K^{*} (892)^{\pm}$ decays, where $D$ represents a superposition of $D^{0}$ and $D^{0}$ …

hep-ex2024★ 2 cited

Observation of muonic Dalitz decays of $χ_{b}$ mesons and precise spectroscopy of hidden-beauty states

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1117

The decays of the $χ_{b 1} (1 P)$ , $χ_{b 2} (1 P)$ , $χ_{b 1} (2 P)$ and $χ_{b 2} (2 P)$ mesons into the $Υ (1 S) μ^{+} μ^{-}$ final state are observed with a high significance using proton-proton coll…

hep-ex2024

Study of $b$ -hadron decays to $Λ_{c}^{+} h^{-} h^{' -}$ final states

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1075

Decays of $Ξ_{b}^{-}$ and $Ω_{b}^{-}$ baryons to $Λ_{c}^{+} h^{-} h^{' -}$ final states, with $h^{-} h^{' -}$ being $π^{-} π^{-}$ , $K^{-} π^{-}$ and $K^{-} K^{-}$ meson pairs…

hep-ex2024★ 5 cited

Prompt and nonprompt $ψ (2 S)$ production in $p$ Pb collisions at $s_{N N} = 8.16$ TeV

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1082

The production of $ψ (2 S)$ mesons in proton-lead collisions at a centre-of-mass energy per nucleon pair of $s_{N N} = 8.16$ TeV is studied with the LHCb detector using data corr…

hep-ex2023★ 3 cited

A search for rare $B \to D μ^{+} μ^{-}$ decays

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1046

A search for rare $B \to D μ^{+} μ^{-}$ decays is performed using proton-proton collision data collected by the LHCb experiment, corresponding to an integrated luminosity of 9…

hep-ex2023★ 5 cited

Observation of the decays $B_{(s)}^{0} \to D_{s 1} (2536)^{\mp} K^{\pm}$

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1088

This paper reports the observation of the decays $B_{(s)}^{0} \to D_{s 1} (2536)^{\mp} K^{\pm}$ using proton-proton collision data collected by the LHCb experiment, corresponding to an…

hep-ex2023★ 1 cited

Study of the Bose-Einstein correlations of same-sign pions in proton-lead collisions

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1045

Correlations of same-sign charged particles are analysed using proton-lead collision data collected by the LHCb experiment at a nucleon-nucleon centre-of-mass energy of 5.02 TeV, c…

hep-ex2022★ 1 cited

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

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1059

The first observation of the $B_{s}^{0} \to D^{*+} D^{*-}$ decay and the measurement of its branching ratio relative to the $B^{0} \to D^{*+} D^{*-}$ decay are presented. The data sample…

hep-ex2022★ 11 cited

Measurement of the charm mixing parameter $y_{C P} - y_{C P}^{K π}$ using two-body $D^{0}$ meson decays

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +995

A measurement of the ratios of the effective decay widths of $D^{0} \to π^{-} π^{+}$ and $D^{0} \to K^{-} K^{+}$ decays over that of $D^{0} \to K^{-} π^{+}$ decays is performed with the LHCb experiment…

hep-ex2022★ 74 cited

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

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +992

The first observation of the semileptonic $b$ -baryon decay $Λ_{b}^{0} \to Λ_{c}^{+} τ^{-} ν_{τ}$ , with a significance of $6.1 σ$ , is reported using a data sample correspondin…

hep-ex2021★ 2 cited

Observation of the $B^{0} \to D^{* 0} K^{+} π^{-}$ and $B_{s}^{0} \to D^{* 0} K^{-} π^{+}$ decays

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +988

The first observations of $B^{0} \to D^{*} (2007)^{0} K^{+} π^{-}$ and $B_{s}^{0} \to D^{*} (2007)^{0} K^{-} π^{+}$ decays are presented, and their branching…

hep-ex2021★ 6 cited

Identification of charm jets at LHCb

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +994

The identification of charm jets is achieved at LHCb for data collected in 2015-2018 using a method based on the properties of displaced vertices reconstructed and matched with jet…

hep-ex2021★ 32 cited

Observation of two new excited $Ξ_{b}^{0}$ states decaying to $Λ_{b}^{0} K^{-} π^{+}$

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +995

Two narrow resonant states are observed in the $Λ_{b}^{0} K^{-} π^{+}$ mass spectrum using a data sample of proton-proton collisions at a center-of-mass energy of 13 $TeV$ , collect…

hep-ex2021★ 52 cited

Simultaneous determination of CKM angle $γ$ and charm mixing parameters

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +994

A combination of measurements sensitive to the $C P$ violation angle $γ$ of the Cabibbo-Kobayashi-Maskawa unitarity triangle and to the charm mixing parameters that describe oscilla…

hep-ex2021★ 25 cited

Search for the doubly charmed baryon $Ξ_{cc}^{+}$ in the $Ξ_{c}^{+} π^{-} π^{+}$ final state

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +992

A search for the doubly charmed baryon $Ξ_{cc}^{+}$ is performed in the $Ξ_{c}^{+} π^{-} π^{+}$ invariant-mass spectrum, where the $Ξ_{c}^{+}$ baryon is reconstructed in t…

hep-ex2021★ 10 cited

Observation of the suppressed $Λ_{b}^{0} \to D p K^{-}$ decay with $D \to K^{+} π^{-}$ and measurement of its $C P$ asymmetry

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +997

A study of $Λ_{b}^{0}$ baryon decays to the $D p K^{-}$ final state is presented based on a proton-proton collision data sample corresponding to an integrated luminosity of 9 fb $^{- 1}$ col…

hep-ex2021★ 113 cited

Measurement of the W boson mass

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +994

The $W$ boson mass is measured using proton-proton collision data at $s = 13$ TeV corresponding to an integrated luminosity of 1.7 fb $^{- 1}$ recorded during 2016 by the LHCb e…

hep-ex2021★ 329 cited

Study of the doubly charmed tetraquark $T_{cc}^{+}$

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +994

An exotic narrow state in the $D^{0} D^{0} π^{+}$ mass spectrum just below the $D^{*+} D^{0}$ mass threshold is studied using a data set corresponding to an integrated luminosity of 9 fb$^{-1…

hep-ex2021★ 403 cited

Observation of an exotic narrow doubly charmed tetraquark

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +994

Conventional hadronic matter consists of baryons and mesons made of three quarks and quark-antiquark pairs, respectively. The observation of a new type of hadronic state, a doubly…

hep-ex2021★ 15 cited

Measurement of $J / ψ$ production cross-sections in $pp$ collisions at $s = 5$ TeV

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +990

The production cross-sections of $J / ψ$ mesons in proton-proton collisions at a centre-of-mass energy of $s = 5$ TeV are measured using a data sample corresponding to an integr…

hep-ex2021★ 11 cited

Search for the radiative $Ξ_{b}^{-} \to Ξ^{-} γ$ decay

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +986

The first search for the rare radiative decay $Ξ_{b}^{-} \to Ξ^{-} γ$ is performed using data collected by the LHCb experiment in proton-proton collisions at a center-of-mass energy of 1…

hep-ex2021★ 112 cited

Evidence for a new structure in the $J / ψ p$ and $J / ψ p ˉ$ systems in $B_{s}^{0} \to J / ψ p p ˉ$ decays

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +987

An amplitude analysis of flavour-untagged $B_{s}^{0} \to J / ψ p p ˉ$ decays is performed using a sample of $797 \pm 31$ decays reconstructed with the LHCb detector. The data, collected…

Measurement of CP asymmetry in Bs0​→Ds∓​K± decays

Measurement of ϕ(1020) meson production in fixed-target pNe collisions at sNN​​ = 68.5 GeV

Measurement of the CKM angle γ in B±→DK∗(892)± decays

Observation of muonic Dalitz decays of χb​ mesons and precise spectroscopy of hidden-beauty states

Study of b-hadron decays to Λc+​h−h′− final states

Prompt and nonprompt ψ(2S) production in pPb collisions at sNN​​=8.16 TeV

A search for rare B→Dμ+μ− decays

Observation of the decays B(s)0​→Ds1​(2536)∓K±

Study of the Bose-Einstein correlations of same-sign pions in proton-lead collisions

Observation of the Bs0​→D∗+D∗− decay

Measurement of the charm mixing parameter yCP​−yCPKπ​ using two-body D0 meson decays

Observation of the decay Λb0​→Λc+​τ−ντ​

Observation of the B0→D∗0K+π− and Bs0​→D∗0K−π+ decays

Identification of charm jets at LHCb

Observation of two new excited Ξb0​ states decaying to Λb0​K−π+

Simultaneous determination of CKM angle γ and charm mixing parameters

Search for the doubly charmed baryon Ξcc+​ in the Ξc+​π−π+ final state

Observation of the suppressed Λb0​→DpK− decay with D→K+π− and measurement of its CP asymmetry

Measurement of the W boson mass

Study of the doubly charmed tetraquark Tcc+​

Observation of an exotic narrow doubly charmed tetraquark

Measurement of J/ψ production cross-sections in pp collisions at s​=5 TeV

Search for the radiative Ξb−​→Ξ−γ decay

Evidence for a new structure in the J/ψp and J/ψpˉ​ systems in Bs0​→J/ψppˉ​ decays

Measurement of $C P$ asymmetry in $B_{s}^{0} \to D_{s}^{\mp} K^{\pm}$ decays

Measurement of $ϕ (1020)$ meson production in fixed-target $p$ Ne collisions at $s_{N N}$ = 68.5 GeV

Measurement of the CKM angle $γ$ in $B^{\pm} \to D K^{*} (892)^{\pm}$ decays

Observation of muonic Dalitz decays of $χ_{b}$ mesons and precise spectroscopy of hidden-beauty states

Study of $b$ -hadron decays to $Λ_{c}^{+} h^{-} h^{' -}$ final states

Prompt and nonprompt $ψ (2 S)$ production in $p$ Pb collisions at $s_{N N} = 8.16$ TeV

A search for rare $B \to D μ^{+} μ^{-}$ decays

Observation of the decays $B_{(s)}^{0} \to D_{s 1} (2536)^{\mp} K^{\pm}$

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

Measurement of the charm mixing parameter $y_{C P} - y_{C P}^{K π}$ using two-body $D^{0}$ meson decays

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

Observation of the $B^{0} \to D^{* 0} K^{+} π^{-}$ and $B_{s}^{0} \to D^{* 0} K^{-} π^{+}$ decays

Observation of two new excited $Ξ_{b}^{0}$ states decaying to $Λ_{b}^{0} K^{-} π^{+}$

Simultaneous determination of CKM angle $γ$ and charm mixing parameters

Search for the doubly charmed baryon $Ξ_{cc}^{+}$ in the $Ξ_{c}^{+} π^{-} π^{+}$ final state

Observation of the suppressed $Λ_{b}^{0} \to D p K^{-}$ decay with $D \to K^{+} π^{-}$ and measurement of its $C P$ asymmetry

Study of the doubly charmed tetraquark $T_{cc}^{+}$

Measurement of $J / ψ$ production cross-sections in $pp$ collisions at $s = 5$ TeV

Search for the radiative $Ξ_{b}^{-} \to Ξ^{-} γ$ decay

Evidence for a new structure in the $J / ψ p$ and $J / ψ p ˉ$ systems in $B_{s}^{0} \to J / ψ p p ˉ$ decays