H. Mu

Constraints on the $K_{S}^{0} \to I^¼^{+} I^¼^{-}$ branching fraction

LHCb collaboration, R. Aaij, C. AbellÃ¡n Beteta +901

A search for the decay $K_{S}^{0} \to I^¼^{+} I^¼^{-}$ is performed using proton-proton collision data, corresponding to an integrated luminosity of $5.6 fb^{- 1}$ …

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

LHCb collaboration, R. Aaij, C. AbellÃ¡n Beteta +904

The ratio of branching fractions of the decays $I^_{b}^{0} \to p K^{-} e^{+} e^{-}$ and $I^_{b}^{0} \to p K^{-} I^¼^{+} I^¼^{-}$ , $R_{p K}^{- 1}$ , is measured for the first time using proton-p…

Observation of excited $I^c ◯_{c}^{0}$ baryons in $I^c ◯_{b}^{-} \to I^_{c}^{+} K^{-} I ¨ ^{-}$ decays

LHCb collaboration, R. Aaij, C. AbellÃ¡n Beteta +959

The first observation of the $I^c ◯_{b}^{-} \to I^_{c}^{+} K^{-} I ¨ ^{-}$ decay is reported using $pp$ collision data at centre-of-mass energies of 7, 8 and 13\, $TeV$ collected by the LHC…

Three-pion Bose-Einstein correlations measured in proton-proton collisions

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

A study on the Bose-Einstein correlations for triplets of same-sign pions is presented. The analysis is performed using proton-proton collisions at a centre-of-mass energy of $\sqr…

Measurement of $C P$ violation observables in $D^{+} \to K^{-} K^{+} I ¨ ^{+}$ decays

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1112

A search for violation of the charge-parity $C P$ symmetry in the $D^{+} \to K^{-} K^{+} I ¨ ^{+}$ decay is presented, with proton-proton collision data corresponding to an integrated…

Search for $A^{'} \to I^¼^{+} I^¼^{-}$ decays

LHCb collaboration, R. Aaij, C. AbellÃ¡n Beteta +905

Searches are performed for both prompt-like and long-lived dark photons, $A^{'}$ , produced in proton-proton collisions at a center-of-mass energy of 13 TeV. These searches look for $A…

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

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

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

Search for the lepton flavour violating decay $B^{+} \to K^{+} I^¼^{-} I ¨ ^{+}$ using $B_{s 2}^{* 0}$ decays

LHCb collaboration, R. Aaij, C. AbellÃ¡n Beteta +904

A search is presented for the lepton flavour violating decay $B^{+} \to K^{+} I^¼^{-} I ¨ ^{+}$ using a sample of proton--proton collisions at centre-of-mass energies of 7, 8, and 13…

Angular analysis of $D^{0} \to I ¨ ^{+} I ¨ ^{-} I^¼^{+} I^¼^{-}$ and $D^{0} \to K^{+} K^{-} I^¼^{+} I^¼^{-}$ decays and search for $C P$ violation

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1003

The first full angular analysis and an updated measurement of the decay-rate $C P$ asymmetry of the $D^{0} \to I ¨ ^{+} I ¨ ^{-} I^¼^{+} I^¼^{-}$ and $D^{0} \to K^{+} K^{-} I^¼^{+} I^¼^{-}$ decays are reported. The…

Measurement of differential $b b ˉ$ - and $c c ˉ$ -dijet cross-sections in the forward region of $pp$ collisions at $s = 13 TeV$

LHCb collaboration, R. Aaij, C. AbellÃ¡n Beteta +975

The inclusive $b b ˉ$ - and $c c ˉ$ -dijet production cross-sections in the forward region of $pp$ collisions are measured using a data sample collected with the LHCb detecto…

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…

Study of $D_{s 1} (2460)^{+} \to D_{s}^{+} I ¨ ^{+} I ¨ ^{-}$ in $B \to D ˉ^{(*)} D_{s}^{+} I ¨ ^{+} I ¨ ^{-}$ decays

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

An amplitude analysis of the $D_{s 1} (2460)^{+} \to D_{s}^{+} I ¨ ^{+} I ¨ ^{-}$ transition is performed simultaneously in $B^{0} \to D^{-} D_{s}^{+} I ¨ ^{+} I ¨ ^{-}$ , $B^{+}\to{\bar{D}}^{0} D_{s}…

Amplitude analysis and branching fraction measurement of $B^{+} \to D^{*-} D_{s}^{+} I ¨ ^{+}$ decays

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1060

The decays of the $B^{+}$ meson to the final state $D^{*-} D_{s}^{+} I ¨ ^{+}$ are studied in proton-proton collision data collected with the LHCb detector at centre-of-mass energies o…

Observation of a new baryon state in the $I^_{b}^{0} I ¨ ^{+} I ¨ ^{-}$ mass spectrum

LHCb collaboration, R. Aaij, C. AbellÃ¡n Beteta +905

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

Observation of several sources of $C P$ violation in $B^{+} \to I ¨ ^{+} I ¨ ^{+} I ¨ ^{-}$ decays

LHCb collaboration, R. Aaij, C. AbellÃ¡n Beteta +868

Observations are reported of different sources of $C P$ violation from an amplitude analysis of $B^{+} \to I ¨ ^{+} I ¨ ^{+} I ¨ ^{-}$ decays, based on a data sample corresponding to an integrate…

Observation of the doubly-charmed-baryon decay $I^_{cc}^{++} \to I^_{c}^{0} I ¨ ^{+} I ¨ ^{+}$

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1134

A search for the doubly-charmed-baryon decay $I^_{cc}^{++} \to I^_{c}^{0} I ¨ ^{+} I ¨ ^{+}$ is performed using proton-proton collision data collected by the LHCb experiment at…

A search for rare $B \to D I^¼^{+} I^¼^{-}$ decays

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1046

A search for rare $B \to D I^¼^{+} I^¼^{-}$ decays is performed using proton-proton collision data collected by the LHCb experiment, corresponding to an integrated luminosity of…

Observation of the decay $I^_{b}^{0} \to I ¨ _{c 1} p I ¨ ^{-}$

LHCb collaboration, R. Aaij, C. AbellÃ¡n Beteta +945

The Cabibbo-suppressed decay $I^_{b}^{0} \to I ¨ _{c 1} p I ¨ ^{-}$ is observed for the first time using data from proton-proton collisions corresponding to an integrated luminosity of 6f…

First observation of a doubly charged tetraquark and its neutral partner

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1055

A combined amplitude analysis is performed for the decays $B^{0} \to D^{0} D_{s}^{+} I ¨ ^{-}$ and $B^{+} \to D^{-} D_{s}^{+} I ¨ ^{+}$ , which are related by isospin symmetry. The…

Precise determination of the B0s-B0sbar oscillation frequency

LHCb collaboration, R. Aaij, C. AbellÃ¡n Beteta +946

Mesons comprising a beauty quark and a strange quark can oscillate between particle (B0s) and antiparticle (B0s) flavour eigenstates, with a frequency given by the mass difference…

Precision measurement of the $I^_{b}^{0}$ baryon lifetime

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1176

A sample of $pp$ collision data, corresponding to an integrated luminosity of 5.4 fb $^{- 1}$ and collected by the LHCb experiment during LHC Run 2, is used to measure the ratio of t…

First determination of the spin-parity of $I^_{c} (3055)^{+, 0}$ baryons

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1112

The $I^_{b}^{0 (-)} \to I^_{c} (3055)^{+ (0)} (\to D^{+ (0)} I^) I ¨ ^{-}$ decay chains are observed, and the spin-parity of $I^_{c} (3055)^{+ (0)}$ baryons is determined for the first time.…

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

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

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

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

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1147

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…

Observation of the $I^_{b}^{0} \to I ¨ _{c 1} (3872) p K^{-}$ decay

LHCb collaboration, R. Aaij, C. AbellÃ¡n Beteta +903

Using proton-proton collision data, collected with the LHCb detector and corresponding to 1.0, 2.0 and 1.9fb $^{- 1}$ of integrated luminosity at the centre-of-mass energies of 7, 8,…

Enhanced production of $I^_{b}^{0}$ baryons in high-multiplicity $pp$ collisions at $s = 13$ TeV

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1085

The production rate of $I^_{b}^{0}$ baryons relative to $B^{0}$ mesons in $pp$ collisions at a center-of-mass energy $s = 13$ TeV is measured by the LHCb experiment. The rat…

First measurement of the $Z \to I^¼^{+} I^¼^{-}$ angular coefficients in the forward region of $pp$ collisions at $s = 13$ TeV

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +999

The first study of the angular distribution of $I^¼^{+} I^¼^{-}$ pairs produced in the forward rapidity region via the Drell-Yan reaction $pp \rightarrow Î³^{*}/Z +X \rightarrow l^+ l^-…

Measurement of the photon polarization in $I^_{b} \to I^ I^^{3}$ decays

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +994

The photon polarization in $b \to s I^^{3}$ transitions is measured for the first time in radiative b-baryon decays exploiting the unique spin structure of $I^_{b} \to I^ I^^{3}$ decays. A da…

Measurement of CP violation in the decay $B^{+} \to K^{+} I ¨ ^{0}$

LHCb collaboration, R. Aaij, C. AbellÃ¡n Beteta +960

A measurement of direct CP violation in the decay $B^{+} \to K^{+} I ¨ ^{0}$ is reported using a data sample corresponding to an integrated luminosity of 5.4 $\textrm{fb}^{-1…

Measurement of the branching fraction of the $I^_{b}^{0} \to J / I ¨ I^$ decay and isospin asymmetry of $B \to J / I ¨ K$ decays

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1193

This paper describes a measurement of the $I^_{b}^{0} \to J / I ¨ I^$ branching fraction using data collected with the LHCb experiment in proton-proton collisions from 2016 to 2018. The dat…

nucl-ex2025

Rapidity and multiplicity dependence of charged-particle flow in $p$ Pb collisions at $s_{N N} = 8.16$ TeV

R. Aaij, A. S. W. Abdelmotteleb, C. Abellan Beteta +1129

The elliptic and triangular flow of charged particles are measured using two-particle angular correlations in $p$ Pb collisions in the pseudorapidity range \cal{2.0 $< ∣ I^\cdot ∣ <$ 4.8}.…

Amplitude analysis of the $I^_{c}^{+} \to p K^{-} I ¨ ^{+}$ decay and $I^_{c}^{+}$ baryon polarization measurement in semileptonic beauty hadron decays

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +999

An amplitude analysis of $I^_{c}^{+} \to p K^{-} I ¨ ^{+}$ decays together with a measurement of the $I^_{c}^{+}$ polarization vector in semileptonic beauty hadron decays is presented. A sample of…

Precision measurement of forward $Z$ boson production in proton-proton collisions at $s = 13$ TeV

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +998

A precision measurement of the $Z$ boson production cross-section at $s = 13$ TeV in the forward region is presented, using $pp$ collision data collected by the LHCb detecto…

Amplitude analysis of $B^{0} \to I^\cdot_{c} (1 S) K^{+} I ¨ ^{-}$ decays

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1185

An amplitude analysis of the $B^{0} \to I^\cdot_{c} (1 S) K^{+} I ¨ ^{-}$ decays with $I^\cdot_{c} (1 S) \to p p ˉ$ is performed using a sample corresponding to an integrated luminosity of…

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 $B^{+} \to J / I ¨ I ¨ ^{+}$ are precisely measured relative to the favoured decay $B^+\!\to…

Observation of a narrow pentaquark state, $P_{c} (4312)^{+}$ , and of two-peak structure of the $P_{c} (4450)^{+}$

LHCb collaboration, R. Aaij, C. AbellÃ¡n Beteta +866

A narrow pentaquark state, $P_{c} (4312)^{+}$ , decaying to $J / I ¨ p$ is discovered with a statistical significance of $7.3 I ¨ $ in a data sample of $I^_{b}^{0} \to J / I ¨ p K^{-}$ decays which is a…

Constraints on the CKM angle $I^^{3}$ from $B^{\pm} \to D h^{\pm}$ decays using $D \to h^{\pm} h^{' \mp} I ¨ ^{0}$ final states

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +994

A data sample collected with the LHCb detector corresponding to an integrated luminosity of 9 fb $^{- 1}$ is used to measure eleven $C P$ violation observables in $B^{\pm} \to D h^{\pm}$ de…

Study of charm mixing and CP violation with $D^{0} \to K^{\pm} I ¨ ^{\mp} I ¨ ^{\pm} I ¨ ^{\mp}$ decays

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

A study of charm mixing and CP violation in $D^{0} \to K^{\pm} I ¨ ^{\mp} I ¨ ^{\pm} I ¨ ^{\mp}$ decays is performed using data collected by the LHCb experiment in proton-proton collisions from 2015 t…

First observation of the $B^{+} \to D_{s}^{+} D_{s}^{-} K^{+}$ decay

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1048

The $B^{+} \to D_{s}^{+} D_{s}^{-} K^{+}$ decay is observed for the first time using proton-proton collision data collected by the LHCb detector at centre-of-mass energies of $7$ , $8$ …

Evidence of a $J / I ¨ Λ$ structure and observation of excited $Ξ^{-}$ states in the $Ξ_{b}^{-} \to J / I ¨ Λ K^{-}$ decay

LHCb collaboration, R. Aaij, C. AbellÃ¡n Beteta +959

First evidence of a structure in the $J / I ¨ Λ$ invariant mass distribution is obtained from an amplitude analysis of $Ξ_{b}^{-} \to J / I ¨ Λ K^{-}$ decays. The observed…

Search for massive long-lived particles decaying semileptonically at sqrt(s)=13 TeV

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +996

A search is performed for massive long-lived particles (LLP) decaying semileptonically into a muon and two quarks. Two kinds of LLP production processes were considered. In the fir…

Measurement of the $I^c ◯_{c}^{0}$ and $I^_{c}^{0}$ baryon lifetimes using hadronic $b$ -baryon decays

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1143

The lifetimes of the $I^c ◯_{c}^{0}$ and $I^_{c}^{0}$ baryons are measured using a $pp$ collision dataset collected by the LHCb experiment, corresponding to an integrated luminosity of $9~\rm…

Measurement of CP violation in the $B_{s}^{0} \to I ¨ I ¨ $ decay and search for the $B^{0} \to I ¨ I ¨ $ decay

LHCb collaboration, R. Aaij, C. AbellÃ¡n Beteta +868

A measurement of the time-dependent CP-violating asymmetry in $B_{s}^{0} \to I ¨ I ¨ $ decays is presented. Using a sample of proton-proton collision data corresponding to an integra…

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…

Measurement of $C P$ violation in $B^{0} \to D^{+} D^{-}$ and $B_{s}^{0} \to D_{s}^{+} D_{s}^{-}$ decays

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

A time-dependent, flavour-tagged measurement of $C P$ violation is performed with $B^{0} \to D^{+} D^{-}$ and $B_{s}^{0} \to D_{s}^{+} D_{s}^{-}$ decays, using data…

nucl-ex2025

Measurement of the $I ¨ (2 S)$ to $J / I ¨ $ cross-section ratio as a function of centrality in PbPb collisions at $s_{NN}$ = 5.02 TeV

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

The dissociation of quarkonium states with different binding energies produced in heavy-ion collisions is a powerful probe for investigating the formation and properties of the qua…

Study of $B_{c}^{+}$ meson decays to charmonia plus multihadron final states

LHCb Collaboration, R. Aaij, A. S. W. Abdelmotteleb +1058

Four decay modes of the $B_{c}^{+}$ meson into a $J / I ¨ $ meson and multiple charged kaons or pions are studied using proton-proton collision data, collected with the~LHCb detector at ce…

First observation of the $I^_{b}^{0} \to I^_{c}^{+} D_{s}^{-} K^{+} K^{-}$ decay and search for pentaquarks in the $I^_{c}^{+} D_{s}^{-}$ system

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1176

The $I^_{b}^{0} \to I^_{c}^{+} D_{s}^{-} K^{+} K^{-}$ decay is observed for the first time using the data sample from proton-proton collisions recorded at a center…

Search for the $B_{c}^{+} \to I ¨ _{c 1} (3872) I ¨ ^{+}$ decay

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

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

Comprehensive analysis of local and nonlocal amplitudes in the $B^{0} \to K^{* 0} I^¼^{+} I^¼^{-}$ decay

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1073

A comprehensive study of the local and nonlocal amplitudes contributing to the decay $B^{0} \to K^{* 0} (\to K^{+} I ¨ ^{-}) I^¼^{+} I^¼^{-}$ is performed by analysing the phase-space distrib…

Observation of the doubly charmed baryon decay $I^_{cc}^{++} \to I^_{c}^{^{'} +} I ¨ ^{+}$

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +995

The $I^_{cc}^{++} \to I^_{c}^{^{'} +} I ¨ ^{+}$ decay is observed using proton-proton collisions collected by the LHCb experiment at a centre-of-mass energy of $13\mathrm{\,Te\kern -0…

Search for the doubly charmed baryon $I^_{cc}^{+}$

LHCb collaboration, R. Aaij, C. AbelÃ¡n Beteta +905

A search for the doubly charmed baryon $I^_{cc}^{+}$ is performed through its decay to the $I^_{c}^{+} K^{-} I ¨ ^{+}$ final state, using proton-proton collision data collected with the LHCb…

Measurements of $C P$ asymmetries and branching fraction ratios of $B^{-}$ decays to two charm mesons

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1053

The $C P$ asymmetries of seven $B^{-}$ decays to two charm mesons are measured using data corresponding to an integrated luminosity of $9 fb^{- 1}$ of proton-proton collisions c…

Study of $C P$ violation in $B_{(s)}^{0} \to D K^{*} (892)^{0}$ decays with $D \to K I ¨ (I ¨ I ¨ )$ , $I ¨ I ¨ (I ¨ I ¨ )$ , and $K K$ final states

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1076

A measurement of $C P$ -violating observables associated with the interference of $B^{0} \to D^{0} K^{*} (892)^{0}$ and $B^{0} \to D ˉ^{0} K^{*} (892)^{0}$ decay amplitudes is performed in the $D^…

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Measurement of $I ¨ (2 S)$ to $J / I ¨ $ cross-section ratio as function of multiplicity in $p$ Pb collisions at $s_{N N} = 8.16$ TeV

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1139

The production ratio of $I ¨ (2 S)$ to $J / I ¨ $ charmonium states is presented as a function of multiplicity in proton-lead collisions at a centre-of-mass energy of $s_{N N} = 8.16$ …

Observation of the decay $I^_{b}^{0} \to I^_{c}^{+} I ¨ ^{-} I^½_{I ¨} $

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +992

The first observation of the semileptonic $b$ -baryon decay $I^_{b}^{0} \to I^_{c}^{+} I ¨ ^{-} I^½_{I ¨} $ , with a significance of $6.1 I ¨ $ , is reported using a data sample corres…

Amplitude analysis of the $B^{0} \to K^{* 0} I^¼^{+} I^¼^{-}$ decay

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1082

An amplitude analysis of the $B^{0} \to K^{* 0} I^¼^{+} I^¼^{-}$ decay is presented using a dataset corresponding to an integrated luminosity of $4.7$ fb $^{- 1}$ of $pp$ collision data collec…

Search for the lepton-flavour violating decays $B^{0} \to K^{* 0} I^¼^{\pm} e^{\mp}$ and $B_{s}^{0} \to I ¨ I^¼^{\pm} e^{\mp}$

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1003

A search for the lepton-flavour violating decays $B^{0} \to K^{* 0} I^¼^{\pm} e^{\mp}$ and $B_{s}^{0} \to I ¨ I^¼^{\pm} e^{\mp}$ is presented, using proton-proton collision data collected by the LHCb…

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…

Measurement of $f_{s} / f_{u}$ variation with proton-proton collision energy and $B$ -meson kinematics

LHCb collaboration, R. Aaij, C. AbellÃ¡n Beteta +903

The ratio of the $B_{s}^{0}$ and $B^{+}$ fragmentation fractions $f_{s}$ and $f_{u}$ is studied with $B_{s}^{0} \to J / I ¨ I ¨ $ and $B^+\to\mathrm…

Measurement of $C P$ observables in the process $B^{0} \to D K^{* 0}$ with two- and four-body $D$ decays

LHCb collaboration, R. Aaij, C. AbellÃ¡n Beteta +876

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

Measurement of the mass difference and relative production rate of the $I^c ◯_{b}^{-}$ and $I^_{b}^{-}$ baryons

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1050

The mass difference between the $I^c ◯_{b}^{-}$ and $I^_{b}^{-}$ baryons is measured using proton-proton collision data collected by the LHCb experiment, corresponding to an integrated lumino…

Associated production of prompt $J / I ¨ $ and $I^¥$ mesons in $pp$ collisions at $s = 13 TeV$

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1045

The associated production of prompt $J / I ¨ $ and $I^¥$ mesons in $pp$ collisions at a centre-of-mass energy of $s = 13 TeV$ is studied using LHCb data,…

Modification of $I ¨ _{c 1}$ (3872) and $I ¨ $ (2 $S$ ) production in $p$ Pb collisions at $s_{N N} = 8.16$ TeV

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1085

The LHCb collaboration measures production of the exotic hadron $I ¨ _{c 1}$ (3872) in proton-nucleus collisions for the first time. Comparison with the charmonium state $I ¨ $ (2 $S$ ) sug…

nucl-ex2023

Nuclear modification factor of neutral pions in the forward and backward regions in $p$ -Pb collisions

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +999

The nuclear modification factor of neutral pions is measured in proton-lead collisions collected at a center-of-mass energy per nucleon of $8.16 TeV$ with the LHCb detector.…

Search for the radiative $I^_{b}^{-} \to I^^{-} I^^{3}$ decay

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +986

The first search for the rare radiative decay $I^_{b}^{-} \to I^^{-} I^^{3}$ is performed using data collected by the LHCb experiment in proton-proton collisions at a center-of-mass energy o…

Branching fraction measurement of the $I^ \to p I^¼^{-} I^½_{I^} ¼$ decay

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

A measurement of the branching fraction for the decay $I^ \to p I^¼^{-} I^½_{I^} ¼$ is presented using $pp$ collision data collected by the LHCb experiment at a ce…

Search for the lepton-flavour-violating decays $B^{0} \to K^{* 0} I ¨ ^{\pm} e^{\mp}$

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

A first search for the lepton-flavour-violating decays $B^{0} \to K^{* 0} I ¨ ^{\pm} e^{\mp}$ is presented. The analysis is performed using a sample of proton-proton collision data, collected…

Measurement of the relative branching fractions of $B^{+} \to h^{+} h^{' +} h^{' -}$ decays

LHCb collaboration, R. Aaij, C. AbellÃ¡n Beteta +957

The relative branching fractions of $B^{+} \to h^{+} h^{' +} h^{' -}$ decays, where $h^{(')}$ is a pion or kaon, are measured. The analysis is performed with a data sample…

Search for long-lived particles decaying to $e^{\pm} I^¼^{\mp} I^½$

LHCb collaboration, R. Aaij, C. AbellÃ¡n Beteta +975

Long-lived particles decaying to $e^{\pm} I^¼^{\mp} I^½$ , with masses between 7 and $50$ GeV/c $^{2}$ and lifetimes between 2 and $50$ ps, are searched for by looking at displaced vertices…

Observation of enhanced double parton scattering in proton-lead collisions at $s_{NN} = 8.16$ TeV

LHCb collaboration, R. Aaij, C. AbellÃ¡n Beteta +992

A study of prompt charm-hadron pair production in proton-lead collisions at $s_{NN} = 8.16$ TeV is performed using data corresponding to an integrated luminosity of ab…

Measurement of the $I^_{b}^{0} \to J / I ¨ I^$ angular distribution and the $I^_{b}^{0}$ polarisation in $pp$ collisions

LHCb collaboration, R. Aaij, C. AbellÃ¡n Beteta +912

This paper presents an analysis of the $I^_{b}^{0} \to J / I ¨ I^$ angular distribution and the transverse production polarisation of $I^_{b}^{0}$ baryons in proton-proton collisions at…

Study of charmonium and charmonium-like contributions in $B^{+} \to J / I ¨ I^\cdot K^{+}$ decays

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +995

A study of $B^{+} \to J / I ¨ I^\cdot K^{+}$ decays, followed by $J / I ¨ \to I^¼^{+} I^¼^{-}$ and $I^\cdot \to I^^{3} I^^{3}$ , is performed using a dataset collected with the LHCb detector in pr…

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

LHCb collaboration, R. Aaij, C. AbellÃ¡n 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…

Search for the lepton-flavor violating decay $B_{s}^{0} \to I ¨ I^¼^{\pm} I ¨ ^{\mp}$

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1065

A search for the lepton-flavor violating decays $B_{s}^{0} \to I ¨ I^¼^{\pm} I ¨ ^{\mp}$ is presented, using a sample of proton-proton collisions at center-of-mass energies of 7, 8, and 13 TeV, co…

Measurement of the nuclear modification factor and prompt charged particle production in $p Pb$ and $pp$ collisions at $s_{NN} = 5 TeV$

LHCb collaboration, R. Aaij, C. AbellÃ¡n Beteta +961

The production of prompt charged particles in proton-lead collisions and in proton-proton collisions at the nucleon-nucleon centre-of-mass energy ${\sqrt{s_{\scriptscriptstyle\math…

Observation of strangeness enhancement with charmed mesons in high-multiplicity $p Pb$ collisions at $s_{NN} = 8.16$ TeV

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1088

The production of prompt $D_{s}^{+}$ and $D^{+}$ mesons is measured by the LHCb experiment in proton-lead ( $p Pb$ ) collisions in both the forward ( $1.5 < y^{*} < 4.0$ ) and backward (…

Measurement of branching fractions and $C P$ asymmetries in $I^_{b}^{0} (I^_{b}^{0}) \to p K_{S}^{0} h^{-}$ decays

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1160

A study of $I^_{b}^{0}$ and $I^_{b}^{0}$ baryon decays to the final states $p K_{S}^{0} I ¨ ^{-}$ and $p K_{S}^{0} K^{-}$ is performed using $pp$ collision data collected b…

Measurement of the lifetimes of promptly produced $I^c ◯_{c}^{0}$ and $I^_{c}^{0}$ baryons

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +991

A measurement of the lifetimes of the $I^c ◯_{c}^{0}$ and $I^_{c}^{0}$ baryons is reported using proton-proton collision data at a centre-of-mass energy of $13 TeV$ , correspond…

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

LHCb collaboration, R. Aaij, C. AbellÃ¡n 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 $I^\cdot_{c} (1 S)$ state in proton-proton collision…

Measurement of the W boson mass

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +994

The $W$ boson mass is measured using proton-proton collision data at $s = 13$ TeV corresponding to an integrated luminosity of 1.7 fb $^{- 1}$ recorded during 2016 by the LHCb e…

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

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

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

Observation of the mass difference between neutral charm-meson eigenstates

LHCb collaboration, R. Aaij, C. AbellÃ¡n Beteta +958

A measurement of mixing and $C P$ violation in neutral charm mesons is performed using data reconstructed in proton-proton collisions collected by the LHCb experiment from 2016 to…

Observation of new excited $B_{s}^{0}$ states

LHCb collaboration, R. Aaij, C. AbellÃ¡n Beteta +972

A structure is observed in the $B^{+} K^{-}$ mass spectrum in a sample of proton--proton collisions at centre-of-mass energies of 7, 8, and 13 TeV, collected with the LHCb detector and…

Search for $C P$ violation in $D_{(s)}^{+} \to h^{+} I ¨ ^{0}$ and $D_{(s)}^{+} \to h^{+} I^\cdot$ decays

LHCb collaboration, R. Aaij, C. AbellÃ¡n Beteta +957

Searches for $C P$ violation in the two-body decays $D_{(s)}^{+} \to h^{+} I ¨ ^{0}$ and $D_{(s)}^{+} \to h^{+} I^\cdot$ (where $h^{+}$ denotes a $I ¨ ^{+}$ or $K^{+}$ meson) ar…

First observation of the $I^_{b}^{0} \to D^{+} D^{-} I^$ decay

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1072

The $I^_{b}^{0} \to D^{+} D^{-} I^$ decay is observed for the first time using proton-proton collision data collected by the LHCb experiment at a center-of-mass energy of $13 TeV$ …

Measurement of prompt charged-particle production in pp collisions at a centre-of-mass energy of 13 TeV

LHCb collaboration, R. Aaij, C. AbellÃ¡n Beteta +957

The differential cross-section of prompt inclusive production of long-lived charged particles in proton-proton collisions is measured using a data sample recorded by the LHCb exper…

Measurement of the Branching Fraction of $B^{0} \to J / I ¨ I ¨ ^{0}$ Decays

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1071

The ratio of branching fractions between $B^{0} \to J / I ¨ I ¨ ^{0}$ and $B^{+} \to J / I ¨ K^{*+}$ decays is measured with proton-proton collision data collected by the LHC…

Study of the lineshape of the $I ¨ _{c 1} (3872)$ state

LHCb collaboration, R. Aaij, C. AbellÃ¡n Beteta +965

A study of the lineshape of the $I ¨ _{c 1} (3872)$ state is made using a data sample corresponding to an integrated luminosity of $3$ fb $^{- 1}$ collected in $pp$ collisions at centre…

Measurement of $J / I ¨ $ production cross-sections in $pp$ collisions at $s = 5$ TeV

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +990

The production cross-sections of $J / I ¨ $ mesons in proton-proton collisions at a centre-of-mass energy of $s = 5$ TeV are measured using a data sample corresponding to an integ…

Curvature-bias corrections using a pseudomass method

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1078

Momentum measurements for very high momentum charged particles, such as muons from electroweak vector boson decays, are particularly susceptible to charge-dependent curvature biase…

Observation and branching fraction measurement of the decay $I^_{b}^{-} \to I^_{b}^{0} I ¨ ^{-}$

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

The decay $I^_{b}^{-} \to I^_{b}^{0} I ¨ ^{-}$ is observed using a proton-proton collision data sample collected at center-of-mass energy $s = 13$ TeV with the LHCb detector, corresponding t…

Observation of new $I^_{c}^{0}$ baryons decaying to $I^_{c}^{+} K^{-}$

LHCb collaboration, R. Aaij, C. AbellÃ¡n Beteta +906

The $I^_{c}^{+} K^{-}$ mass spectrum is studied with a data sample of $pp$ collisions at a centre-of-mass energy of 13 TeV corresponding to an integrated luminosity of 5.6 fb $^{- 1}$ colle…

Measurement of prompt $D^{+}$ and $D_{s}^{+}$ production in $p Pb$ collisions at $s_{NN} = 5.02$ TeV

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1046

The production of prompt $D^{+}$ and $D_{s}^{+}$ mesons is studied in proton-lead collisions at a centre-of-mass energy of $s_{NN} = 5.02$ TeV. The data sample correspo…

Measurement of the CKM angle $I^^{3}$ in the $B^{0} \to D K^{* 0}$ channel using self-conjugate $D \to K_{S}^{0} h^{+} h^{-}$ decays

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1061

A model-independent study of CP violation in $B^{0} \to D K^{* 0}$ decays is presented using data corresponding to an integrated luminosity of 9fb $^{- 1}$ collected by the LHCb experime…

Test of lepton flavour universality using $B^{0} \to D^{*-} I ¨ ^{+} I^½_{I ¨} $ decays with hadronic $I ¨ $ channels

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1051

The branching fraction $B (B^{0} \to D^{*-} I ¨ ^{+} I^½_{I ¨} )$ is measured relative to that of the normalization mode $B^{0} \to D^{*-} I ¨ ^{+} I ¨ ^{-} I ¨ ^{+}$ using hadronic $Ï^+ \to Ï^+Ï^-Ï…

Search for $B_{c}^{+} \to I ¨ ^{+} I^¼^{+} I^¼^{-}$ decays and measurement of the branching fraction ratio $B (B_{c}^{+} \to I ¨ (2 S) I ¨ ^{+}) / B (B_{c}^{+} \to J / I ¨ I ¨ ^{+})$

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1078

The first search for nonresonant $B_{c}^{+} \to I ¨ ^{+} I^¼^{+} I^¼^{-}$ decays is reported. The analysis uses proton-proton collision data collected with the LHCb detector between 2011 and 2018, c…

First observation and branching fraction measurement of the $I^_{b}^{0} \to D_{s}^{-} p$ decay

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1048

The first observation of the $I^_{b}^{0} \to D_{s}^{-} p$ decay is presented using proton-proton collision data collected by the LHCb experiment at a centre-of-mass energy of ${\sqrt{s}=13…

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