B. Malecki

activity

20132023

most citedObservation of a narrow pentaquark state,

P_{c} (4312)^{+}

, and of two-peak structure of the

P_{c} (4450)^{+}

738 citations · 4.7k across the 96 of their papers we have counts for

collaborators

97 papers

hep-ex2023

Search for $D^{*} (2007)^{0} \to μ^{+} μ^{-}$ in $B^{-} \to π^{-} μ^{+} μ^{-}$ decays

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1047

The very rare $D^{*} (2007)^{0} \to μ^{+} μ^{-}$ decay is searched for by analysing $B^{-} \to π^{-} μ^{+} μ^{-}$ decays. The analysis uses a sample of beauty mesons produced in proton-proton collisions…

physics.ins-det2022★ 16 cited

Performance of the LHCb RICH detectors during LHC Run 2

R. Calabrese, M. Fiorini, E. Luppi +79

The performance of the ring-imaging Cherenkov detectors at the LHCb experiment is determined during the LHC Run 2 period between 2015 and 2018. The stability of the Cherenkov angle…

physics.ins-det2021★ 8 cited

Characterisation of signal-induced noise in Hamamatsu R11265 Multianode Photomultiplier Tubes

M. Andreotti, S. Capelli, G. Cavallero +26

Signal-induced noise is observed in Hamamatsu R11265 Multianode Photomultiplier Tubes, manifesting up to several microseconds after the single photoelectron response signal and loc…

hep-ex2021★ 48 cited

Search for the doubly heavy baryons $Ω_{bc}^{0}$ and $Ξ_{bc}^{0}$ decaying to $Λ_{c}^{+} π^{-}$ and $Ξ_{c}^{+} π^{-}$

LHCb collaboration, R. Aaij, C. Abellán Beteta +900

The first search for the doubly heavy $Ω_{bc}^{0}$ baryon and a search for $Ξ_{bc}^{0}$ baryon are performed using $pp$ collision data collected via the LHCb experiment…

hep-ex2020★ 28 cited

First branching fraction measurement of the suppressed decay $Ξ_{c}^{0} \to π^{-} Λ_{c}^{+}$

LHCb collaboration, R. Aaij, C. Abellán Beteta +963

The $Ξ_{c}^{0}$ baryon is unstable and usually decays into charmless final states by the $c \to s u d$ transition. It can, however, also disintegrate into a $π^{-}$ meson and a…

hep-ex2020★ 53 cited

Study of the $ψ_{2} (3823)$ and $χ_{c 1} (3872)$ states in $B^{+} \to (J ψ π^{+} π^{-}) K^{+}$ decays

LHCb collaboration, R. Aaij, C. Abellán Beteta +956

The decays $B^{+} \to J / ψ π^{+} π^{-} K^{+}$ are studied using a data set corresponding to an integrated luminosity of 9fb $^{- 1}$ collected with the LHCb detector in proton-proton co…

hep-ex2020★ 6 cited

Measurement of branching fraction ratios for $B^{+} \to D^{+} D^{-} K^{+}$ , $B^{+} \to D^{-} D^{+} K^{+}$ , and $B^{0} \to D^{*-} D^{0} K^{+}$ decays

LHCb collaboration, R. Aaij, C. Abellán Beteta +914

A measurement of four branching-fraction ratios for three-body decays of $B$ mesons involving two open-charm hadrons in the final state is presented. Run 1 and Run 2 $pp$ collision…

hep-ex2020★ 17 cited

Precision measurement of the $B_{c}^{+}$ meson mass

LHCb collaboration, R. Aaij, C. Abellán Beteta +905

A precision measurement of the $B_{c}^{+}$ meson mass is performed using proton-proton collision data collected with the LHCb experiment at centre-of-mass energies of $7, 8$ and $1…

hep-ex2020★ 32 cited

Search for the lepton flavour violating decay $B^{+} \to K^{+} μ^{-} τ^{+}$ using $B_{s 2}^{* 0}$ decays

LHCb collaboration, R. Aaij, C. Abellán Beteta +904

A search is presented for the lepton flavour violating decay $B^{+} \to K^{+} μ^{-} τ^{+}$ using a sample of proton--proton collisions at centre-of-mass energies of 7, 8, and 13 Te…

hep-ex2020★ 15 cited

Measurement of the shape of the $B_{s}^{0} \to D_{s}^{*-} μ^{+} ν_{μ}$ differential decay rate

LHCb collaboration, R. Aaij, C. Abellán Beteta +906

The shape of the $B_{s}^{0} \to D_{s}^{*-} μ^{+} ν_{μ}$ differential decay rate is obtained as a function of the hadron recoil using proton-proton collision data at a centre-of-mass ene…

hep-ex2020★ 12 cited

Measurement of $C P$ observables in $B^{\pm} \to D K^{\pm}$ and $B^{\pm} \to D π^{\pm}$ with $D \to K_{S}^{0} K^{\pm} π^{\mp}$ decays

LHCb collaboration, R. Aaij, C. Abellán Beteta +904

Measurements of $C P$ observables in $B^{\pm} \to D K^{\pm}$ and $B^{\pm} \to D π^{\pm}$ decays are presented, where $D$ represents a superposition of $D^{0}$ and $D ˉ^{0}$ states. The $D$ …

hep-ex2020★ 8 cited

Measurement of the branching fraction of the decay $B_{s}^{0} \to K_{S}^{0} K_{S}^{0}$

LHCb collaboration, R. Aaij, C. Abellán Beteta +905

A measurement of the branching fraction of the decay $B_{s}^{0} \to K_{S}^{0} K_{S}^{0}$ is performed using proton-proton collision data corresponding to an integrated luminosity of 5 $fb^{-1}…

hep-ex2020★ 45 cited

Observation of a new baryon state in the $Λ_{b}^{0} π^{+} π^{-}$ mass spectrum

LHCb collaboration, R. Aaij, C. Abellán Beteta +905

A new baryon state is observed in the $Λ_{b}^{0} π^{+} π^{-}$ mass spectrum with high significance using a data sample of $pp$ collisions, collected with the LHCb detector at centre-of-mass…

hep-ex2020★ 28 cited

Constraints on the $K_{S}^{0} \to μ^{+} μ^{-}$ branching fraction

LHCb collaboration, R. Aaij, C. Abellán Beteta +901

A search for the decay $K_{S}^{0} \to μ^{+} μ^{-}$ is performed using proton-proton collision data, corresponding to an integrated luminosity of $5.6 fb^{- 1}$ a…

hep-ex2020

Measurement of $∣ V_{c b} ∣$ with $B_{s}^{0} \to D_{s}^{(*) -} μ^{+} ν_{μ}$ decays

LHCb collaboration, R. Aaij, C. Abellán Beteta +904

The element $∣ V_{c b} ∣$ of the Cabibbo-Kobayashi-Maskawa matrix is measured using semileptonic $B_{s}^{0}$ decays produced in proton-proton collision data collected with the LHCb detect…

hep-ex2019★ 32 cited

Search for $C P$ violation and observation of $P$ violation in $Λ_{b}^{0} \to p π^{-} π^{+} π^{-}$ decays

LHCb collaboration, R. Aaij, C. Abellán Beteta +902

A search for $C P$ violation in the $Λ_{b}^{0} \to p π^{-} π^{+} π^{-}$ decay is performed using LHCb data corresponding to an integrated luminosity of 6.6 $f b^{- 1}$ collected in $pp$ coll…

hep-ex2019★ 64 cited

Test of lepton universality with $Λ_{b}^{0} \to p K^{-} ℓ^{+} ℓ^{-}$ decays

LHCb collaboration, R. Aaij, C. Abellán Beteta +904

The ratio of branching fractions of the decays $Λ_{b}^{0} \to p K^{-} e^{+} e^{-}$ and $Λ_{b}^{0} \to p K^{-} μ^{+} μ^{-}$ , $R_{p K}^{- 1}$ , is measured for the first time using proton-proto…

hep-ex2019★ 17 cited

Isospin amplitudes in $Λ_{b}^{0} \to J / ψ Λ (Σ^{0})$ and $Ξ_{b}^{0} \to J / ψ Ξ^{0} (Λ)$ decays

LHCb collaboration, R. Aaij, C. Abellán Beteta +902

Ratios of isospin amplitudes in hadron decays are a useful probe of the interplay between weak and strong interactions, and allow searches for physics beyond the Standard Model. We…

hep-ex2019★ 47 cited

Precision measurement of the $Ξ_{cc}^{++}$ mass

LHCb collaboration, R. Aaij, C. Abellán Beteta +901

A measurement of the $Ξ_{cc}^{++}$ mass is performed using data collected by the LHCb experiment between 2016 and 2018 in $pp$ collisions at a centre-of-mass energy of 13 TeV, corr…

hep-ex2019★ 5 cited

Observation of the semileptonic decay $B^{+} \to p p μ^{+} ν_{μ}$

LHCb collaboration, R. Aaij, C. Abellán Beteta +900

The Cabibbo-suppressed semileptonic decay $B^{+} \to p p μ^{+} ν_{μ}$ is observed for the first time using a sample of $pp$ collisions corresponding to an integrated luminosit…

hep-ex2019★ 31 cited

Determination of quantum numbers for several excited charmed mesons observed in $B^{-} \to D^{*+} π^{-} π^{-}$ decays

LHCb collaboration, R. Aaij, C. Abellán Beteta +907

A four-body amplitude analysis of the $B^{-} \to D^{*+} π^{-} π^{-}$ decay is performed, where fractions and relative phases of the various resonances contributing to the decay are measu…

hep-ex2019★ 37 cited

Measurement of the $η_{c} (1 S)$ production cross-section in $pp$ collisions at $s = 13$ TeV

LHCb collaboration, R. Aaij, C. Abellán Beteta +913

Using a data sample corresponding to an integrated luminosity of $2.0 f b^{- 1}$ , collected by the LHCb experiment, the production of the $η_{c} (1 S)$ state in proton-proton collisions…

hep-ex2019★ 21 cited

Updated measurement of decay-time-dependent CP asymmetries in $D^{0} \to K^{+} K^{-}$ and $D^{0} \to π^{+} π^{-}$ decays

LHCb collaboration, R. Aaij, C. Abellán Beteta +910

A search for decay-time-dependent charge-parity ( $C P$ ) asymmetry in $D^{0} \to K^{+} K^{-}$ and $D^{0} \to π^{+} π^{-}$ decays is performed at the LHCb experiment using proton-proton collision d…

hep-ex2019★ 37 cited

Measurement of the $B_{c}^{-}$ meson production fraction and asymmetry in 7 and 13 TeV $pp$ collisions

LHCb collaboration, R. Aaij, C. Abellán Beteta +900

The production fraction of the $B_{c}^{-}$ meson with respect to the sum of $B^{-}$ and $B ˉ^{0}$ mesons is measured in both 7 and 13 TeV center-of-mass energy $pp$ collisions produced…

Search for D∗(2007)0→μ+μ− in B−→π−μ+μ− decays

Performance of the LHCb RICH detectors during LHC Run 2

Characterisation of signal-induced noise in Hamamatsu R11265 Multianode Photomultiplier Tubes

Search for the doubly heavy baryons Ωbc0​ and Ξbc0​ decaying to Λc+​π− and Ξc+​π−

First branching fraction measurement of the suppressed decay Ξc0​→π−Λc+​

Study of the ψ2​(3823) and χc1​(3872) states in B+→(Jψπ+π−)K+ decays

Measurement of branching fraction ratios for B+→D∗+D−K+, B+→D∗−D+K+, and B0→D∗−D0K+ decays

Precision measurement of the Bc+​ meson mass

Search for the lepton flavour violating decay B+→K+μ−τ+ using Bs2∗0​ decays

Measurement of the shape of the Bs0​→Ds∗−​μ+νμ​ differential decay rate

Measurement of CP observables in B±→DK± and B±→Dπ± with D→KS0​K±π∓ decays

Measurement of the branching fraction of the decay Bs0​→KS0​KS0​

Observation of a new baryon state in the Λb0​π+π− mass spectrum

Constraints on the KS0​→μ+μ− branching fraction

Measurement of ∣Vcb​∣ with Bs0​→Ds(∗)−​μ+νμ​ decays

Search for CP violation and observation of P violation in Λb0​→pπ−π+π− decays

Test of lepton universality with Λb0​→pK−ℓ+ℓ− decays

Isospin amplitudes in Λb0​→J/ψΛ(Σ0) and Ξb0​→J/ψΞ0(Λ) decays

Precision measurement of the Ξcc++​ mass

Observation of the semileptonic decay B+→pp​μ+νμ​

Determination of quantum numbers for several excited charmed mesons observed in B−→D∗+π−π− decays

Measurement of the ηc​(1S) production cross-section in pp collisions at s​=13 TeV

Updated measurement of decay-time-dependent CP asymmetries in D0→K+K− and D0→π+π− decays

Measurement of the Bc−​ meson production fraction and asymmetry in 7 and 13 TeV pp collisions

Search for $D^{*} (2007)^{0} \to μ^{+} μ^{-}$ in $B^{-} \to π^{-} μ^{+} μ^{-}$ decays

Search for the doubly heavy baryons $Ω_{bc}^{0}$ and $Ξ_{bc}^{0}$ decaying to $Λ_{c}^{+} π^{-}$ and $Ξ_{c}^{+} π^{-}$

First branching fraction measurement of the suppressed decay $Ξ_{c}^{0} \to π^{-} Λ_{c}^{+}$

Study of the $ψ_{2} (3823)$ and $χ_{c 1} (3872)$ states in $B^{+} \to (J ψ π^{+} π^{-}) K^{+}$ decays

Measurement of branching fraction ratios for $B^{+} \to D^{+} D^{-} K^{+}$ , $B^{+} \to D^{-} D^{+} K^{+}$ , and $B^{0} \to D^{*-} D^{0} K^{+}$ decays

Precision measurement of the $B_{c}^{+}$ meson mass

Search for the lepton flavour violating decay $B^{+} \to K^{+} μ^{-} τ^{+}$ using $B_{s 2}^{* 0}$ decays

Measurement of the shape of the $B_{s}^{0} \to D_{s}^{*-} μ^{+} ν_{μ}$ differential decay rate

Measurement of $C P$ observables in $B^{\pm} \to D K^{\pm}$ and $B^{\pm} \to D π^{\pm}$ with $D \to K_{S}^{0} K^{\pm} π^{\mp}$ decays

Measurement of the branching fraction of the decay $B_{s}^{0} \to K_{S}^{0} K_{S}^{0}$

Observation of a new baryon state in the $Λ_{b}^{0} π^{+} π^{-}$ mass spectrum

Constraints on the $K_{S}^{0} \to μ^{+} μ^{-}$ branching fraction

Measurement of $∣ V_{c b} ∣$ with $B_{s}^{0} \to D_{s}^{(*) -} μ^{+} ν_{μ}$ decays

Search for $C P$ violation and observation of $P$ violation in $Λ_{b}^{0} \to p π^{-} π^{+} π^{-}$ decays

Test of lepton universality with $Λ_{b}^{0} \to p K^{-} ℓ^{+} ℓ^{-}$ decays

Isospin amplitudes in $Λ_{b}^{0} \to J / ψ Λ (Σ^{0})$ and $Ξ_{b}^{0} \to J / ψ Ξ^{0} (Λ)$ decays

Precision measurement of the $Ξ_{cc}^{++}$ mass

Observation of the semileptonic decay $B^{+} \to p p μ^{+} ν_{μ}$

Determination of quantum numbers for several excited charmed mesons observed in $B^{-} \to D^{*+} π^{-} π^{-}$ decays

Measurement of the $η_{c} (1 S)$ production cross-section in $pp$ collisions at $s = 13$ TeV

Updated measurement of decay-time-dependent CP asymmetries in $D^{0} \to K^{+} K^{-}$ and $D^{0} \to π^{+} π^{-}$ decays

Measurement of the $B_{c}^{-}$ meson production fraction and asymmetry in 7 and 13 TeV $pp$ collisions