D. Pérez

activity

20132026

most citedTest of lepton universality using

B^{+} \to K^{+} ℓ^{+} ℓ^{-}

decays

952 citations · 9k across the 207 of their papers we have counts for

collaborators

210 papers

hep-ex2026

A converged architecture for processing 32 Tbps of physics data in real-time at the LHCb experiment

Roel Aaij, Christina Agapopoulou, Thomas Boettcher +27

The LHCb detector at the Large Hadron Collider has been upgraded to acquire an unprecedented 32 Tbps of particle-collision data to provide new insights in the High Energy Physics d…

hep-ex2025

Observation of the decay $B_{s}^{0} \to K^{0} p p ˉ$ and measurement of the $B_{(s)}^{0} \to K^{0} p p ˉ$ branching fractions

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

A study of the charmless baryonic decays $B_{(s)}^{0} \to K^{0} p p ˉ$ is presented, where $B_{(s)}^{0}$ denotes either a $B^{0}$ or a $B_{s}^{0}$ meson. The analysis is based on proton-pr…

hep-ex2025

Angular analysis of the decay $B_{s}^{0} \to ϕ e^{+} e^{-}$

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

An angular analysis of the decay $B_{s}^{0} \to ϕ e^{+} e^{-}$ is presented, using proton-proton collision data collected with the LHCb detector between 2011 and 2018 at centre-of-mass energie…

hep-ex2025★ 1 cited

Observation of the very rare $Σ^{+} \to p μ^{+} μ^{-}$ decay

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

The first observation of the $Σ^{+} \to p μ^{+} μ^{-}$ decay is reported with high significance using proton-proton collision data, corresponding to an integrated luminosity of $5.4\,\rm…

hep-ex2025★ 1 cited

Search for the $B_{c}^{+} \to χ_{c 1} (3872) π^{+}$ decay

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1128

A search for the decay $B_{c}^{+} \to χ_{c 1} (3872) π^{+}$ is reported using proton-proton collision data collected with the LHCb detector between 2011 and 2018 at centre-of-mass en…

hep-ex2025★ 47 cited

Observation of charge-parity symmetry breaking in baryon decays

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1136

The Standard Model of particle physics-the theory of particles and interactions at the smallest scale-predicts that matter and antimatter interact differently due to violation of t…

hep-ex2025

Branching fraction measurement of the decay $B^{+} \to ψ (2 S) ϕ (1020) K^{+}$

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1133

The branching fraction of the decay $B^{+} \to ψ (2 S) ϕ (1020) K^{+}$ , relative to the topologically similar decay $B^{+} \to J / ψ ϕ (1020) K^{+}$ , is measured using proton-proton collision data co…

hep-ex2025★ 2 cited

Angular analysis of $B^{0} \to K^{* 0} e^{+} e^{-}$ decays

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1118

An angular analysis of $B^{0} \to K^{* 0} e^{+} e^{-}$ decays is presented using proton-proton collision data collected by the LHCb experiment at centre-of-mass energies of 7, 8…

hep-ex2025★ 4 cited

Search for resonance-enhanced $C P$ and angular asymmetries in the $Λ_{c}^{+} \to p μ^{+} μ^{-}$ decay at LHCb

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

The first measurement of the $C P$ asymmetry of the decay rate ( $A_{C P}$ ) and the $C P$ average ( $Σ A_{FB}$ ) and $C P$ asymmetry ( $Δ A_{FB}$ ) of the forward-backward asymm…

hep-ex2025★ 3 cited

Evidence for $B^{-} \to D^{** 0} τ^{-} ν_{τ}$ decays

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

The first evidence for the decay $B^{-} \to D^{** 0} τ^{-} ν_{τ}$ is obtained using proton-proton collision data collected by the LHCb experiment, corresponding to an inte…

hep-ex2025

Measurement of the multiplicity dependence of $\mitΥ$ production ratios in $pp$ collisions at $s = 13$ TeV

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

The $\mitΥ(\mathrm{2}S)$ and $\mitΥ(\mathrm{3}S)$ production cross-sections are measured relative to that of the $\mitΥ(\mathrm{1}S)$ meson, as a function of charged-particle multi…

hep-ex2025★ 4 cited

Search for charge-parity violation in semileptonically tagged $D^{0} \to K^{+} π^{-}$ decays

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

An analysis of the flavour oscillations of the charmed neutral meson is presented. The ratio of $D^{0} \to K^{+} π^{-}$ and $D^{0} \to K^{-} π^{+}$ decay rates is measured as a fun…

hep-ex2025★ 1 cited

Study of light-meson resonances decaying to $K_{S}^{0} K π$ in the $B \to (K_{S}^{0} K π) K$ channels

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

A study is presented of $B^{+} \to K_{S}^{0} K^{-} π^{+} K^{-}$ and $B^{+} \to K_{S}^{0} K^{+} π^{-} K^{+}$ decays based on the analysis of proton-proton collision data collected with the LHCb…

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★ 10 cited

Measurement of $C P$ asymmetries in $Λ_{b}^{0} \to p h^{-}$ decays

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1129

A search for $C P$ violation in $Λ_{b}^{0} \to p K^{-}$ and $Λ_{b}^{0} \to p π^{-}$ decays is presented using the full Run 1 and Run 2 data samples of $pp$ collisions collected with…

hep-ex2024★ 3 cited

Test of lepton flavour universality with $B^{+} \to K^{+} π^{+} π^{-} ℓ^{+} ℓ^{-}$ decays

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

The first test of lepton flavor universality between muons and electrons using $B^{+} \to K^{+} π^{+} π^{-} ℓ^{+} ℓ^{-}$ ( $ℓ = e, μ$ ) decays is presented. The measurement is performed with d…

hep-ex2024★ 5 cited

Search for $D^{0}$ meson decays to $π^{+} π^{-} e^{+} e^{-}$ and $K^{+} K^{-} e^{+} e^{-}$ final states

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1130

A search for $D^{0}$ meson decays to the $π^{+} π^{-} e^{+} e^{-}$ and $K^{+} K^{-} e^{+} e^{-}$ final states is reported using a sample of proton-proton collisions collected by the LHCb experiment at a c…

hep-ex2024★ 7 cited

Observation of the open-charm tetraquark candidate $T_{cs 0}^{*} (2870)^{0}$ in the $B^{-} \to D^{-} D^{0} K_{S}^{0}$ decay

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1133

An amplitude analysis of $B^{-} \to D^{-} D^{0} K_{S}^{0}$ decays is performed using proton-proton collision data, corresponding to an integrated luminosity of $9\,\text{fb}^…

hep-ex2024★ 7 cited

First evidence for direct CP violation in beauty to charmonium decays

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

The $C P$ asymmetry and branching fraction of the CKM-suppressed decay $B^{+} \to J / ψ π^{+}$ are precisely measured relative to the favoured decay $B^+\!\to J\…

hep-ex2024★ 4 cited

Constraints on the photon polarisation in $b \to s γ$ transitions using $B_{s}^{0} \to ϕ e^{+} e^{-}$ decays

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1124

An angular analysis of the $B_{s}^{0} \to ϕ e^{+} e^{-}$ decay is performed using the proton-proton collision dataset collected between 2011 and 2018 by the LHCb experiment, correspo…

hep-ex2024★ 9 cited

Test of lepton flavour universality with $B_{s}^{0} \to ϕ ℓ^{+} ℓ^{-}$ decays

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1128

Lepton flavour universality in rare $b \to s$ transitions is tested for the first time using $B_{s}^{0}$ meson decays. The measurements are performed using $pp$ collision data c…

hep-ex2024★ 5 cited

Measurement of the effective leptonic weak mixing angle

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1120

Using $pp$ collision data at $s = 13$ TeV, recorded by the LHCb experiment between 2016 and 2018 and corresponding to an integrated luminosity of $5.4$ fb $^{- 1}$ , the forward-…

hep-ex2024

Search for $B_{(s)}^{* 0} \to μ^{+} μ^{-}$ in $B_{c}^{+} \to π^{+} μ^{+} μ^{-}$ decays

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1116

A search for the very rare $B^{* 0} \to μ^{+} μ^{-}$ and $B_{s}^{* 0} \to μ^{+} μ^{-}$ decays is conducted by analysing the $B_{c}^{+} \to π^{+} μ^{+} μ^{-}$ process. The analysis uses proton-proton collision…

hep-ex2024★ 8 cited

Measurement of exclusive $J / ψ$ and $ψ (2 S)$ production at $s = 13$ TeV

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

Measurements are presented of the cross-section for the central exclusive production of $J / ψ \to μ^{+} μ^{-}$ and $ψ (2 S) \to μ^{+} μ^{-}$ processes in proton-proton collisions at $\sqrt{s} = 13…

A converged architecture for processing 32 Tbps of physics data in real-time at the LHCb experiment

Observation of the decay Bs0​→K0ppˉ​ and measurement of the B(s)0​→K0ppˉ​ branching fractions

Angular analysis of the decay Bs0​→ϕe+e−

Observation of the very rare Σ+→pμ+μ− decay

Search for the Bc+​→χc1​(3872)π+ decay

Observation of charge-parity symmetry breaking in baryon decays

Branching fraction measurement of the decay B+→ψ(2S)ϕ(1020)K+

Angular analysis of B0→K∗0e+e− decays

Search for resonance-enhanced CP and angular asymmetries in the Λc+​→pμ+μ− decay at LHCb

Evidence for B−→D∗∗0τ−ντ​​ decays

Measurement of the multiplicity dependence of $\mitΥ$ production ratios in pp collisions at s​=13 TeV

Search for charge-parity violation in semileptonically tagged D0→K+π− decays

Study of light-meson resonances decaying to KS0​Kπ in the B→(KS0​Kπ)K channels

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

Measurement of CP asymmetries in Λb0​→ph− decays

Test of lepton flavour universality with B+→K+π+π−ℓ+ℓ− decays

Search for D0 meson decays to π+π−e+e− and K+K−e+e− final states

Observation of the open-charm tetraquark candidate Tcs0∗​(2870)0 in the B−→D−D0KS0​ decay

First evidence for direct CP violation in beauty to charmonium decays

Constraints on the photon polarisation in b→sγ transitions using Bs0​→ϕe+e− decays

Test of lepton flavour universality with Bs0​→ϕℓ+ℓ− decays

Measurement of the effective leptonic weak mixing angle

Search for B(s)∗0​→μ+μ− in Bc+​→π+μ+μ− decays

Measurement of exclusive J/ψ and ψ(2S) production at s​=13 TeV

Observation of the decay $B_{s}^{0} \to K^{0} p p ˉ$ and measurement of the $B_{(s)}^{0} \to K^{0} p p ˉ$ branching fractions

Angular analysis of the decay $B_{s}^{0} \to ϕ e^{+} e^{-}$

Observation of the very rare $Σ^{+} \to p μ^{+} μ^{-}$ decay

Search for the $B_{c}^{+} \to χ_{c 1} (3872) π^{+}$ decay

Branching fraction measurement of the decay $B^{+} \to ψ (2 S) ϕ (1020) K^{+}$

Angular analysis of $B^{0} \to K^{* 0} e^{+} e^{-}$ decays

Search for resonance-enhanced $C P$ and angular asymmetries in the $Λ_{c}^{+} \to p μ^{+} μ^{-}$ decay at LHCb

Evidence for $B^{-} \to D^{** 0} τ^{-} ν_{τ}$ decays

Measurement of the multiplicity dependence of $\mitΥ$ production ratios in $pp$ collisions at $s = 13$ TeV

Search for charge-parity violation in semileptonically tagged $D^{0} \to K^{+} π^{-}$ decays

Study of light-meson resonances decaying to $K_{S}^{0} K π$ in the $B \to (K_{S}^{0} K π) K$ channels

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

Measurement of $C P$ asymmetries in $Λ_{b}^{0} \to p h^{-}$ decays

Test of lepton flavour universality with $B^{+} \to K^{+} π^{+} π^{-} ℓ^{+} ℓ^{-}$ decays

Search for $D^{0}$ meson decays to $π^{+} π^{-} e^{+} e^{-}$ and $K^{+} K^{-} e^{+} e^{-}$ final states

Observation of the open-charm tetraquark candidate $T_{cs 0}^{*} (2870)^{0}$ in the $B^{-} \to D^{-} D^{0} K_{S}^{0}$ decay

Constraints on the photon polarisation in $b \to s γ$ transitions using $B_{s}^{0} \to ϕ e^{+} e^{-}$ decays

Test of lepton flavour universality with $B_{s}^{0} \to ϕ ℓ^{+} ℓ^{-}$ decays

Search for $B_{(s)}^{* 0} \to μ^{+} μ^{-}$ in $B_{c}^{+} \to π^{+} μ^{+} μ^{-}$ decays

Measurement of exclusive $J / ψ$ and $ψ (2 S)$ production at $s = 13$ TeV