A. Valassi

activity

20172024

most citedObservation of a narrow pentaquark state,

P_{c} (4312)^{+}

, and of two-peak structure of the

P_{c} (4450)^{+}

738 citations · 941 across the 15 of their papers we have counts for

collaborators

15 papers

hep-ex2024★ 1 cited

Amplitude analysis of the radiative decay $B_{s}^{0} \to K^{+} K^{-} γ$

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1064

A search for radiative decay of $B_{s}^{0}$ mesons to orbitally excited $K^{+} K^{-}$ states is performed using proton proton collisions recorded by the \mbox{LHCb}\xspace experiment, corre…

hep-ex2024★ 9 cited

Observation of the $B_{c}^{+} \to J / ψ π^{+} π^{0}$ decay

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1068

The first observation of the $B_{c}^{+} \to J / ψ π^{+} π^{0}$ decay is reported with high significance using proton-proton collision data, corresponding to an integrated luminosity of 9fb$^{…

hep-ex2024★ 2 cited

Measurements of the branching fraction ratio $B (ϕ \to μ^{+} μ^{-}) / B (ϕ \to e^{+} e^{-})$ with charm meson decays

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1083

Measurements of the branching fraction ratio $B (ϕ \to μ^{+} μ^{-}) / B (ϕ \to e^{+} e^{-})$ with $D_{s}^{+} \to π^{+} ϕ$ and $D^{+} \to π^{+} ϕ$ decays, denoted $R_{ϕ π}^{s}$ an…

hep-ex2023★ 6 cited

Multiplicity dependence of $σ_{ψ (2 S)} / σ_{J / ψ}$ in $pp$ collisions at $s = 13$ TeV

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1087

The ratio of production cross-sections of $ψ (2 S)$ over $J / ψ$ mesons as a function of charged-particle multiplicity in proton-proton collisions at a centre-of-mass energy $\sqrt{s}=…

hep-ex2023★ 3 cited

Measurement of associated $J / ψ$ - $ψ (2 S)$ production cross-section in $pp$ collisions at $s = 13$ TeV

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1080

The cross-section of associated $J / ψ$ - $ψ (2 S)$ production in proton-proton collisions at a centre-of-mass energy of $s = 13$ TeV is measured using a data sample corresponding t…

hep-ex2023★ 1 cited

Search for $CP$ violation in the phase space of $D^{0} \to K_{S}^{0} K^{\pm} π^{\mp}$ decays with the energy test

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1091

A search for $CP$ violation in $D^{0} \to K_{S}^{0} K^{+} π^{-}$ and $D^{0} \to K_{S}^{0} K^{-} π^{+}$ decays is reported. The search is performed using…

Amplitude analysis of the radiative decay Bs0​→K+K−γ

Observation of the Bc+​→J/ψπ+π0 decay

Measurements of the branching fraction ratio B(ϕ→μ+μ−)/B(ϕ→e+e−) with charm meson decays

Multiplicity dependence of σψ(2S)​/σJ/ψ​ in pp collisions at s​=13 TeV

Measurement of associated J/ψ-ψ(2S) production cross-section in pp collisions at s​=13 TeV