A. Gioventù

activity

20102026

most citedObservation of structure in the

J / ψ

-pair mass spectrum

414 citations · 5.6k across the 258 of their papers we have counts for

collaborators

263 papers

hep-ex2026

Measurement of the ratio of branching fractions $B (B_{c}^{+} \to J / ψ τ^{+} ν_{τ}) / B (B_{c}^{+} \to J / ψ μ^{+} ν_{μ})$

LHCb collaboration, R. Aaij, M. Abdelfatah +1121

A measurement of the ratio of semileptonic branching fractions $R (J ψ)$ , defined as $\mathcal{R}(J/ψ) \equiv \mathcal{B}(B_c^+ \to J/ψτ^+ ν_τ)/\mathcal{B}(B_c^+ \to J/ψμ^+…

hep-ex2026

Associated $Z$ + $J / ψ$ production as a probe of multiparton interactions in the forward region

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

This letter reports a study of associated $Z$ boson and prompt $J / ψ$ production in proton-proton collisions at $s = 13$ TeV with the LHCb detector in the forward rapidity regi…

hep-ex2026

Evidence for the decay $B_{s}^{0} \to ϕ η^{'}$

LHCb collaboration, R. Aaij, M. Abdelfatah +1101

Using a dataset corresponding to an integrated luminosity of $9 fb^{- 1}$ collected in proton-proton collisions between 2011 and 2018 by the LHCb experiment, evidence is…

hep-ex2026

$C P$ violation analysis of local and nonlocal amplitudes in the $B^{0} \to K^{* 0} μ^{+} μ^{-}$ decay

LHCb collaboration, R. Aaij, M. Abdelfatah +1104

A search for $C P$ violation in the $B^{0} \to K^{* 0} μ^{+} μ^{-}$ decay is performed using proton-proton collision data collected by the LHCb experiment during Run…

hep-ex2026

First evidence of the decay $B^{+} \to π^{+} e^{+} e^{-}$

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

The first evidence for the decay $B^{+} \to π^{+} e^{+} e^{-}$ is reported using proton-proton collision data recorded by the LHCb experiment at centre-of-mass energies of 7, 8 and 13 TeV, c…

hep-ex2026

Angular analysis of the $B^{+} \to π^{+} μ^{+} μ^{-}$ decay

LHCb collaboration, R. Aaij, M. Abdelfatah +1112

This paper presents the first measurement of the forward-backward asymmetry, $A_{FB}$ , and the flat term, $F_{H}$ , that parameterise the angular distribution of the $B^+\toπ^+μ…

hep-ex2026

Observation of a new excited charm-strange meson $D_{s 1} (2933)^{+}$ in $B^{0} \to D^{+} D^{-} K^{+} π^{-}$ decays

LHCb collaboration, R. Aaij, M. Abdelfatah +1114

A new excited charm-strange meson is observed through an amplitude analysis of the full phase space of $B^{0} \to D^{+} D^{-} K^{+} π^{-}$ decays. The analysis is based on a proton-proton col…

hep-ex2026

Measurement of the local and nonlocal amplitudes in $B^{+} \to K^{+} μ^{+} μ^{-}$ decays

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

This paper presents a thorough study of the local and nonlocal amplitudes in $B^{+} \to K^{+} μ^{+} μ^{-}$ transitions through an amplitude analysis of the dimuon mass spectrum of the decay.…

hep-ex2026

Improved branching-fraction measurements of $B_{(s)}^{0} \to K_{S}^{0} h^{+} h^{^{'} -}$ decays and first observation of $B_{s}^{0} \to K_{S}^{0} K^{+} K^{-}$

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1123

This paper presents a study of the charmless three-body decays $B_{(s)}^{0} \to K_{S}^{0} h^{+} h^{' -}$ (where $h^{(')} = π, K$ ), using a sample of $pp$ collision d…

hep-ex2026

$B$ -jet fragmentation with $B^{\pm} \to J / ψ K^{\pm}$ decays in $s = 13$ TeV $pp$ collisions at LHCb

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1166

The collinear and transverse-momentum-dependent jet fragmentation function and the radial profile for $B^{\pm}$ mesons in jets are measured. The $B^{\pm}$ mesons are reconstructed…

hep-ex2026★ 1 cited

First measurement of time-dependent $C P$ violation in the flavor-changing neutral-current decay $B^{0} \to K_{S}^{0} μ^{+} μ^{-}$

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1165

A flavor-tagged time-dependent analysis of $B^{0} \to K_{S}^{0} μ^{+} μ^{-}$ decays is performed across the full dimuon mass range excluding the $J / ψ$ and $ψ (2 S)$ resonance re…

hep-ex2026

First measurement of the decay-time-integrated $C P$ asymmetry in $B_{s}^{0} \to D_{s}^{-} π^{+}$ decays

LHCb collaboration, R. Aaij, M. Abdelfatah +1114

A measurement of the flavor-untagged decay-time-integrated $C P$ asymmetry in the flavor-specific decay $B_{s}^{0} \to D_{s}^{-} π^{+}$ , $⟨ A_{untagged}^{s} ⟩$ , is perform…

hep-ex2026

Search for $τ^{-} \to μ^{-} μ^{+} μ^{-}$ decays at the LHCb experiment with Run 2 data

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

A search for the lepton-flavour-violating decay $τ^{-} \to μ^{-} μ^{+} μ^{-}$ is carried out using data collected by the LHCb experiment between 2016 and 2018 in proton-proton collisions at t…

hep-ex2026

Observation of the decay $χ_{c 1} (3872) \to J / ψ μ^{+} μ^{-}$

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

The first observation of the $χ_{c 1} (3872) \to J / ψ μ^{+} μ^{-}$ decay is reported using proton-proton collision data recorded with the LHCb detector correspo…

hep-ex2026

Observation of $C P$ violation in $B^{0} \to J / ψ ρ (770)^{0}$ decays

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1172

The time-dependent $C P$ asymmetry in $B^{0} \to J / ψ ρ (770)^{0}$ decays is measured using proton-proton collision data corresponding to an integrated luminosity o…

hep-ex2026

Search for lepton-number-violating $B^{-} \to D^{(*) +} μ^{-} μ^{-}$ decays

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

A search is performed for lepton-number-violating $B^{-} \to D^{(*) +} μ^{-} μ^{-}$ decays, using data collected by the LHCb experiment in proton-proton collisions at a center-of-mass energy…

hep-ex2026

Evidence for the rare decay $B^{+} \to Λ ˉ p μ^{+} μ^{-}$

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

A search for the rare decay $B^{+} \to Λ ˉ p μ^{+} μ^{-}$ is performed using proton-proton collision data recorded by the LHCb experiment at a center-of-mass energy of $\sqrt{s}=…

hep-ex2026

First evidence of the $B_{s}^{0} \to K^{-} π^{+} γ$ decay

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

The first search for the $B_{s}^{0} \to K^{-} π^{+} γ$ decay in the range $796 < m (K^{-} π^{+}) < 1800 MeV/ c^{2}$ is performed using data from proton-proton collisions collected by the L…

hep-ex2025★ 2 cited

Search for heavy neutral leptons in B-meson decays

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

A search for long-lived heavy neutral leptons produced in B-meson decays and decaying to a $μ^{\pm} π^{\mp}$ final state is performed with data collected by the LHCb experiment in pro…

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

Precision measurement of CP violation and branching fractions in $B^{\pm} \to K_{S}^{0} h^{\pm}$ $(h = π, K)$ decays and search for the rare decay $B_{c}^{\pm} \to K_{S}^{0} K^{\pm}$

R. Aaij, A. S. W. Abdelmotteleb, C. Abellan Beteta +1177

The decay $B^{\pm} \to K_{S}^{0} π^{\pm}$ , with a $C P$ asymmetry expected to be close to zero in the Standard Model, is theoretically clean and sensitive to potential new ph…

hep-ex2025★ 1 cited

Measurement of the branching fractions and longitudinal polarisations of $B_{(s)}^{0} \to K^{* 0} K^{* 0}$ decays

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

A time- and flavour-integrated amplitude analysis of $B^{0}$ and $B_{s}^{0}$ decays to the $(K^{+} π^{-}) (K^{-} π^{+})$ final state in the $K^*(892)^0 \kern 0.18em \overline{\kern -0.18em K}{}^{*}…

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★ 1 cited

First observation of the $B_{s}^{0} \to Λ_{c}^{+} Λ_{c}^{-}$ decay and evidence for the $B^{0} \to Λ_{c}^{+} Λ_{c}^{-}$ decay

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

A search is presented for the two-body charmed baryonic decays $B_{(s)}^{0} \to Λ_{c}^{+} Λ_{c}^{-}$ , using a data sample collected by the LHCb experiment during…

Measurement of the ratio of branching fractions B(Bc+​→J/ψτ+ντ​)/B(Bc+​→J/ψμ+νμ​)

Associated Z + J/ψ production as a probe of multiparton interactions in the forward region

Evidence for the decay Bs0​→ϕη′

CP violation analysis of local and nonlocal amplitudes in the B0→K∗0μ+μ− decay

First evidence of the decay B+→π+e+e−

Angular analysis of the B+→π+μ+μ− decay

Observation of a new excited charm-strange meson Ds1​(2933)+ in B0→D+D−K+π− decays

Measurement of the local and nonlocal amplitudes in B+→K+μ+μ− decays

Improved branching-fraction measurements of B(s)0​→KS0​h+h′− decays and first observation of Bs0​→KS0​K+K−

B-jet fragmentation with B±→J/ψK± decays in s​=13 TeV pp collisions at LHCb

First measurement of time-dependent CP violation in the flavor-changing neutral-current decay B0→KS0​μ+μ−

First measurement of the decay-time-integrated CP asymmetry in Bs0​→Ds−​π+ decays

Search for τ−→μ−μ+μ− decays at the LHCb experiment with Run 2 data

Observation of the decay χc1​(3872)→J/ψμ+μ−

Observation of CP violation in B0→J/ψρ(770)0 decays

Search for lepton-number-violating B−→D(∗)+μ−μ− decays

Evidence for the rare decay B+→Λˉpμ+μ−

First evidence of the Bs0​→K−π+γ decay

Search for heavy neutral leptons in B-meson decays

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

Precision measurement of CP violation and branching fractions in B±→KS0​h± (h=π,K) decays and search for the rare decay Bc±​→KS0​K±

Measurement of the branching fractions and longitudinal polarisations of B(s)0​→K∗0K∗0 decays

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

First observation of the Bs0​→Λc+​Λc​− decay and evidence for the B0→Λc+​Λc​− decay

Measurement of the ratio of branching fractions $B (B_{c}^{+} \to J / ψ τ^{+} ν_{τ}) / B (B_{c}^{+} \to J / ψ μ^{+} ν_{μ})$

Associated $Z$ + $J / ψ$ production as a probe of multiparton interactions in the forward region

Evidence for the decay $B_{s}^{0} \to ϕ η^{'}$

$C P$ violation analysis of local and nonlocal amplitudes in the $B^{0} \to K^{* 0} μ^{+} μ^{-}$ decay

First evidence of the decay $B^{+} \to π^{+} e^{+} e^{-}$

Angular analysis of the $B^{+} \to π^{+} μ^{+} μ^{-}$ decay

Observation of a new excited charm-strange meson $D_{s 1} (2933)^{+}$ in $B^{0} \to D^{+} D^{-} K^{+} π^{-}$ decays

Measurement of the local and nonlocal amplitudes in $B^{+} \to K^{+} μ^{+} μ^{-}$ decays

Improved branching-fraction measurements of $B_{(s)}^{0} \to K_{S}^{0} h^{+} h^{^{'} -}$ decays and first observation of $B_{s}^{0} \to K_{S}^{0} K^{+} K^{-}$

$B$ -jet fragmentation with $B^{\pm} \to J / ψ K^{\pm}$ decays in $s = 13$ TeV $pp$ collisions at LHCb

First measurement of time-dependent $C P$ violation in the flavor-changing neutral-current decay $B^{0} \to K_{S}^{0} μ^{+} μ^{-}$

First measurement of the decay-time-integrated $C P$ asymmetry in $B_{s}^{0} \to D_{s}^{-} π^{+}$ decays

Search for $τ^{-} \to μ^{-} μ^{+} μ^{-}$ decays at the LHCb experiment with Run 2 data

Observation of the decay $χ_{c 1} (3872) \to J / ψ μ^{+} μ^{-}$

Observation of $C P$ violation in $B^{0} \to J / ψ ρ (770)^{0}$ decays

Search for lepton-number-violating $B^{-} \to D^{(*) +} μ^{-} μ^{-}$ decays

Evidence for the rare decay $B^{+} \to Λ ˉ p μ^{+} μ^{-}$

First evidence of the $B_{s}^{0} \to K^{-} π^{+} γ$ decay

Precision measurement of CP violation and branching fractions in $B^{\pm} \to K_{S}^{0} h^{\pm}$ $(h = π, K)$ decays and search for the rare decay $B_{c}^{\pm} \to K_{S}^{0} K^{\pm}$

Measurement of the branching fractions and longitudinal polarisations of $B_{(s)}^{0} \to K^{* 0} K^{* 0}$ decays

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

First observation of the $B_{s}^{0} \to Λ_{c}^{+} Λ_{c}^{-}$ decay and evidence for the $B^{0} \to Λ_{c}^{+} Λ_{c}^{-}$ decay