A. Boyer

activity

20202026

most citedMeasurement of the branching fraction ratio

R_{K}

at large dilepton invariant mass

6 citations · 59 across the 69 of their papers we have counts for

collaborators

Showing 2025Show all

37 papers · 1 filter

hep-ex2025

Comprehensive analysis of the $B^{0} \to K^{* 0} μ^{+} μ^{-}$ decay

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1183

An analysis of the $B^{0} \to K^{* 0} (\to K^{+} π^{-}) μ^{+} μ^{-}$ decay is presented using proton-proton collision data collected by the LHCb experiment, corresponding to an inte…

hep-ex2025

Measurement of the top-quark production cross-section and charge asymmetry at LHCb

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1173

The first measurements of the top- and antitop-quark differential production cross-sections and the top-quark charge asymmetry in the forward region are presented, using proton-pro…

hep-ex2025

Observation of the rare baryonic decay $B^{+} \to p Λ ˉ$ and measurement of its weak decay parameter

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1182

The first observation of the decay $B^{+} \to p Λ ˉ$ is presented, using proton-proton collision data collected by the LHCb experiment between 2016 and 2018 at a cent…

hep-ex2025

Observation and investigation of the $T_{c c ˉ 1} (4430)^{+}$ structure in $B^{+} \to ψ (2 S) K_{S}^{0} π^{+}$ decays

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1184

The first four-dimensional amplitude analysis of the $B^{+} \to ψ (2 S) K_{S}^{0} π^{+}$ decay is performed with proton-proton collision data collected by the LHCb experiment…

hep-ex2025

Differential decay rate of $B^{+} \to J / ψ K^{+}$ with the LHCb Upgrade I experiment

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1183

The normalised decay rate of $B^{+} \to J / ψ (\to μ^{+} μ^{-}) K^{+}$ is measured as a function of the lepton helicity angle using a data sample corresponding to an integrated luminosity of $…

hep-ex2025★ 1 cited

Branching fraction measurement of the $Λ \to p μ^{-} ν_{μ}$ decay

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1187

A measurement of the branching fraction for the decay $Λ \to p μ^{-} ν_{μ}$ is presented using $pp$ collision data collected by the LHCb experiment at a centre…

hep-ex2025

Study of charm mixing and CP violation with $D^{0} \to K^{\pm} π^{\mp} π^{\pm} π^{\mp}$ decays

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1188

A study of charm mixing and CP violation in $D^{0} \to K^{\pm} π^{\mp} π^{\pm} π^{\mp}$ decays is performed using data collected by the LHCb experiment in proton-proton collisions from 2015 to 2…

hep-ex2025

Measurement of the $W \to μ ν_{μ}$ cross-sections as a function of the muon transverse momentum in $pp$ collisions at 5.02 TeV

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1186

The $pp \to W^{\pm} (\to μ^{\pm} ν_{μ}) X$ cross-sections are measured at a proton-proton centre-of-mass energy $s = 5.02$ TeV using a dataset corresponding to an integrated l…

hep-ex2025★ 2 cited

First evidence of $C P$ violation in beauty baryon to charmonium decays

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1178

A study of the difference in the $C P$ asymmetries between $Λ_{b}^{0} \to J / ψ p π^{-}$ and $Λ_{b}^{0} \to J / ψ p K^{-}$ decays, $Δ A_{C P}$ , is performed using proton-prot…

hep-ex2025★ 2 cited

Observation of $B_{c}^{+} \to D h^{+} h^{-}$ decays

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1185

Searches are presented for $B_{c}^{+} \to D h^{+} h^{-}$ decays, where $D$ is a charmed meson and $h^{\pm}$ is a charged pion or kaon, using $pp$ collision data collected by the LHCb e…

hep-ex2025

Amplitude analysis of $B^{0} \to η_{c} (1 S) K^{+} π^{-}$ decays

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1185

An amplitude analysis of the $B^{0} \to η_{c} (1 S) K^{+} π^{-}$ decays with $η_{c} (1 S) \to p p ˉ$ is performed using a sample corresponding to an integrated luminosity of 9$\…

hep-ex2025

Inclusive $B$ -meson flavour-tagging algorithm at LHCb

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1179

A new algorithm is developed to identify the flavour of neutral $B$ mesons at production in $pp$ collisions by utilising all tracks from the hadronisation process. The algorithm is…

hep-ex2025★ 1 cited

First observation of the charmless baryonic decay $B^{+} \to Λ ˉ p p ˉ p$

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1186

A search for the charmless baryonic decay $B^{+} \to Λ ˉ p p ˉ p$ is performed using proton-proton collision data recorded by the LHCb experiment, corresponding to an integrated l…

nucl-ex2025★ 3 cited

Measurement of transverse $Λ$ and $Λ ˉ$ hyperon polarization in $p$ Pb collisions at $s_{N N} = 5.02$ TeV

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1131

The transverse polarization of $Λ$ and $Λ ˉ$ hyperons is measured in $p$ Pb collisions collected by the LHCb experiment at a nucleon-nucleon center-of-mass energy of $5.02$ TeV. T…

hep-ex2025

Search for resonances decaying to photon pairs with masses between 4.9 and 19.4 GeV

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1144

A search is presented for axion-like particles (ALPs) with masses between 4.9 and 19.4 GeV decaying to a pair of photons, using proton-proton collisions collected with the LHCb det…

hep-ex2025

Measurement of the $B^{0} \to ρ (770)^{0} γ$ branching fraction

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1160

The ratio between the branching fractions of the $B^{0} \to ρ (770)^{0} γ$ and $B^{0} \to K^{*} (892)^{0} γ$ decays is measured with proton-proton collision data collected…

hep-ex2025

Precision measurement of the $Ξ_{b}^{0}$ baryon lifetime

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1176

A sample of $pp$ collision data, corresponding to an integrated luminosity of 5.4 fb $^{- 1}$ and collected by the LHCb experiment during LHC Run 2, is used to measure the ratio of t…

hep-ex2025★ 2 cited

First observation of the $Λ_{b}^{0} \to Λ_{c}^{+} D_{s}^{-} K^{+} K^{-}$ decay and search for pentaquarks in the $Λ_{c}^{+} D_{s}^{-}$ system

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1176

The $Λ_{b}^{0} \to Λ_{c}^{+} D_{s}^{-} K^{+} K^{-}$ decay is observed for the first time using the data sample from proton-proton collisions recorded at a center-o…

hep-ex2025★ 4 cited

Observation of orbitally excited $B_{c}^{+}$ states

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1155

The observation of a wide peaking structure in the $B_{c}^{+} γ$ mass spectrum is reported using proton-proton collision data collected by the LHCb detector at center-of-mass energ…

hep-ex2025★ 2 cited

Study of $B_{c} (1 P)^{+}$ states in the $B_{c}^{+} γ$ mass spectrum

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1155

The study of a wide peaking structure in the $B_{c}^{+} γ$ mass spectrum is reported using a data sample of proton-proton collisions collected by the LHCb detector at center-of-mas…

hep-ex2025

Updated measurement of $C P$ violation and polarisation in $B_{s}^{0} \to J / ψ K^{*} (892)^{0}$ decays

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1169

A time-integrated angular analysis of the decay $B_{s}^{0} \to J / ψ K^{*} (892)^{0}$ , with $J / ψ \to μ^{+} μ^{-}$ and $\overline{K}{}^{*}\kern-1pt(892)…

hep-ex2025★ 2 cited

Measurement of the $Ω_{c}^{0}$ and $Ξ_{c}^{0}$ baryon lifetimes using hadronic $b$ -baryon decays

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1143

The lifetimes of the $Ω_{c}^{0}$ and $Ξ_{c}^{0}$ baryons are measured using a $pp$ collision dataset collected by the LHCb experiment, corresponding to an integrated luminosity of $9~\rm{f…

nucl-ex2025★ 1 cited

Measurement of $ψ (2 S)$ to $J / ψ$ cross-section ratio as function of multiplicity in $p$ Pb collisions at $s_{N N} = 8.16$ TeV

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1139

The production ratio of $ψ (2 S)$ to $J / ψ$ charmonium states is presented as a function of multiplicity in proton-lead collisions at a centre-of-mass energy of $s_{N N} = 8.16$ T…

nucl-ex2025

Coherent photoproduction of $ρ^{0}, ω$ and excited vector mesons in ultraperipheral PbPb collisions

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

The invariant-mass distribution for the coherent photoproduction of dipions in ultraperipheral PbPb collisions is measured using data, corresponding to an integrated luminosity of…

Comprehensive analysis of the B0→K∗0μ+μ− decay

Measurement of the top-quark production cross-section and charge asymmetry at LHCb

Observation of the rare baryonic decay B+→pΛˉ and measurement of its weak decay parameter

Observation and investigation of the Tccˉ1​(4430)+ structure in B+→ψ(2S)KS0​π+ decays

Differential decay rate of B+→J/ψK+ with the LHCb Upgrade I experiment

Branching fraction measurement of the Λ→pμ−νμ​ decay

Study of charm mixing and CP violation with D0→K±π∓π±π∓ decays

Measurement of the W→μνμ​ cross-sections as a function of the muon transverse momentum in pp collisions at 5.02 TeV

First evidence of CP violation in beauty baryon to charmonium decays

Observation of Bc+​→Dh+h− decays

Amplitude analysis of B0→ηc​(1S)K+π− decays

Inclusive B-meson flavour-tagging algorithm at LHCb

First observation of the charmless baryonic decay B+→Λˉppˉ​p

Measurement of transverse Λ and Λˉ hyperon polarization in pPb collisions at sNN​​=5.02 TeV

Search for resonances decaying to photon pairs with masses between 4.9 and 19.4 GeV

Measurement of the B0→ρ(770)0γ branching fraction

Precision measurement of the Ξb0​ baryon lifetime

First observation of the Λb0​→Λc+​Ds−​K+K− decay and search for pentaquarks in the Λc+​Ds−​ system

Observation of orbitally excited Bc+​ states

Study of Bc​(1P)+ states in the Bc+​γ mass spectrum

Updated measurement of CP violation and polarisation in Bs0​→J/ψK∗(892)0 decays

Measurement of the Ωc0​ and Ξc0​ baryon lifetimes using hadronic b-baryon decays

Measurement of ψ(2S) to J/ψ cross-section ratio as function of multiplicity in pPb collisions atsNN​​=8.16 TeV

Coherent photoproduction of ρ0,ω and excited vector mesons in ultraperipheral PbPb collisions

Comprehensive analysis of the $B^{0} \to K^{* 0} μ^{+} μ^{-}$ decay

Observation of the rare baryonic decay $B^{+} \to p Λ ˉ$ and measurement of its weak decay parameter

Observation and investigation of the $T_{c c ˉ 1} (4430)^{+}$ structure in $B^{+} \to ψ (2 S) K_{S}^{0} π^{+}$ decays

Differential decay rate of $B^{+} \to J / ψ K^{+}$ with the LHCb Upgrade I experiment

Branching fraction measurement of the $Λ \to p μ^{-} ν_{μ}$ decay

Study of charm mixing and CP violation with $D^{0} \to K^{\pm} π^{\mp} π^{\pm} π^{\mp}$ decays

Measurement of the $W \to μ ν_{μ}$ cross-sections as a function of the muon transverse momentum in $pp$ collisions at 5.02 TeV

First evidence of $C P$ violation in beauty baryon to charmonium decays

Observation of $B_{c}^{+} \to D h^{+} h^{-}$ decays

Amplitude analysis of $B^{0} \to η_{c} (1 S) K^{+} π^{-}$ decays

Inclusive $B$ -meson flavour-tagging algorithm at LHCb

First observation of the charmless baryonic decay $B^{+} \to Λ ˉ p p ˉ p$

Measurement of transverse $Λ$ and $Λ ˉ$ hyperon polarization in $p$ Pb collisions at $s_{N N} = 5.02$ TeV

Measurement of the $B^{0} \to ρ (770)^{0} γ$ branching fraction

Precision measurement of the $Ξ_{b}^{0}$ baryon lifetime

First observation of the $Λ_{b}^{0} \to Λ_{c}^{+} D_{s}^{-} K^{+} K^{-}$ decay and search for pentaquarks in the $Λ_{c}^{+} D_{s}^{-}$ system

Observation of orbitally excited $B_{c}^{+}$ states

Study of $B_{c} (1 P)^{+}$ states in the $B_{c}^{+} γ$ mass spectrum

Updated measurement of $C P$ violation and polarisation in $B_{s}^{0} \to J / ψ K^{*} (892)^{0}$ decays

Measurement of the $Ω_{c}^{0}$ and $Ξ_{c}^{0}$ baryon lifetimes using hadronic $b$ -baryon decays

Measurement of $ψ (2 S)$ to $J / ψ$ cross-section ratio as function of multiplicity in $p$ Pb collisions at $s_{N N} = 8.16$ TeV

Coherent photoproduction of $ρ^{0}, ω$ and excited vector mesons in ultraperipheral PbPb collisions