V. Cavallini

activity

20212026

most citedTest of lepton universality in

b \to s ℓ^{+} ℓ^{-}

decays

126 citations · 1.2k across the 183 of their papers we have counts for

collaborators

187 papers

hep-ex2026

Branching fraction measurements of $η$ and $η^{'} (958)$ anomalous decays

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

Branching fractions of $η$ and $η^{'} (958)$ anomalous decays are measured using $pp$ collision data at a center-of-mass energy of $s = 13 TeV$ collected by the LHCb exper…

nucl-ex2026

Measurement of the average transverse momentum of forward prompt charged particles in $pp$ and $p Pb$ collisions at $s_{N N} = 5.02 TeV$

LHCb collaboration, R. Aaij, M. Abdelfatah +1106

This letter presents the first measurements of the average transverse momentum of prompt charged particles in $pp$ and $p Pb$ collisions as a function of collision multipli…

hep-ex2026

New measurements of $B_{c}^{+}$ decays into single charm final states

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

Using proton-proton collision data corresponding to an integrated luminosity of $9 fb^{- 1}$ collected by the LHCb experiment, searches are performed for $B_{c}^{+}$ mesons d…

physics.ins-det2026

A flexible DAQ system for the Timepix4 ASIC in the 4DPHOTON project

N. V. Biesuz, J. Alozy, R. Bolzonella +6

This paper presents the design and implementation of a flexible data acquisition system13 developed for the Timepix4 ASIC. The system is based on a modular14 FPGA-centric architect…

hep-ex2026

Differential measurement of the branching fraction and $C P$ asymmetry of the decay $B^{\pm} \to π^{\pm} μ^{+} μ^{-}$

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

Differential measurements of the branching fraction and $C P$ asymmetry of the decay $B^{\pm} \to π^{\pm} μ^{+} μ^{-}$ are performed in intervals of the dimuon mass squared, $q^{2}$ , using pro…

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…

nucl-ex2026

Study of nuclear effects on charm production in light-ion collisions

LHCb collaboration, R. Aaij, M. Abdelfatah +1106

The onset of nuclear effects in light-ion collisions is studied by measuring the ratio of $D^{0}$ meson production between NeNe and OO collisions at a center-of-mass energy per nucle…

hep-ex2026

Observation of the charmless purely baryonic decay $Λ_{b}^{0} \to Λ p p$

LHCb collaboration, R. Aaij, M. Abdelfatah +1103

A search for the charmless purely baryonic decay $Λ_{b}^{0} \to Λ p p$ is performed using proton-proton collision data recorded by the LHCb experi…

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★ 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

A method for luminosity determination based on real-time hit reconstruction with the LHCb silicon pixel detector

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1177

The data acquisition system of the upgraded LHCb experiment includes the fast reconstruction of all hits in the vertex locator (VELO) pixel detector at the beam-crossing rate of 40…

physics.ins-det2026★ 4 cited

Development and characterization of hybrid MCP-PMT with embedded Timepix4 ASIC used as pixelated anode

Riccardo Bolzonella, Jerome Alozy, Rafael Ballabriga +10

We present a novel single-photon detector based on a vacuum tube incorporating a photocathode, a microchannel plate (MCP), and a Timepix4 CMOS ASIC functioning as a pixelated anode…

physics.ins-det2026

Hybrid MCP-PMT characterisation on a testbeam with Cherenkov setup

G. Romolini, J. Alozy, R. Ballabriga +12

A novel photodetector based on a MCP-PMT vacuum tube with encapsulated CMOS ASIC has been tested at the CERN SPS high energy hadron beam, allowing single photon Cherenkov detection…

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

Machine learning techniques for jet reconstruction at LHCb and application to the search for $H \to b b ˉ$ and $H \to c c ˉ$ in $s = 13$ TeV $pp$ collisions

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1194

Two machine learning techniques for jet measurements at the LHCb experiment are presented: a regression-based method for jet-energy calibration and a deep neural network algorithm…

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…

Branching fraction measurements of η and η′(958) anomalous decays

Measurement of the average transverse momentum of forward prompt charged particles in pp and pPb collisions at sNN​​=5.02TeV

New measurements of Bc+​ decays into single charm final states

A flexible DAQ system for the Timepix4 ASIC in the 4DPHOTON project

Differential measurement of the branching fraction and CP asymmetry of the decay B±→π±μ+μ−

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

Study of nuclear effects on charm production in light-ion collisions

Observation of the charmless purely baryonic decay Λb0​→Λpp​

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−

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

A method for luminosity determination based on real-time hit reconstruction with the LHCb silicon pixel detector

Development and characterization of hybrid MCP-PMT with embedded Timepix4 ASIC used as pixelated anode

Hybrid MCP-PMT characterisation on a testbeam with Cherenkov setup

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

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

Machine learning techniques for jet reconstruction at LHCb and application to the search for H→bbˉ and H→ccˉ in s​=13 TeV pp collisions

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

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

Branching fraction measurements of $η$ and $η^{'} (958)$ anomalous decays

Measurement of the average transverse momentum of forward prompt charged particles in $pp$ and $p Pb$ collisions at $s_{N N} = 5.02 TeV$

New measurements of $B_{c}^{+}$ decays into single charm final states

Differential measurement of the branching fraction and $C P$ asymmetry of the decay $B^{\pm} \to π^{\pm} μ^{+} μ^{-}$

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

Observation of the charmless purely baryonic decay $Λ_{b}^{0} \to Λ p p$

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 $B_{s}^{0} \to K_{S}^{0} K^{+} K^{-}$

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

Machine learning techniques for jet reconstruction at LHCb and application to the search for $H \to b b ˉ$ and $H \to c c ˉ$ in $s = 13$ TeV $pp$ collisions

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