C. A. Barajas

activity

20202024

most citedBranching fraction measurements of the rare

B_{s}^{0} \to ϕ μ^{+} μ^{-}

and

B_{s}^{0} \to f_{2}^{'} (1525) μ^{+} μ^{-}

decays

154 citations · 588 across the 62 of their papers we have counts for

collaborators

64 papers

hep-ex2024★ 6 cited

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

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

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

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…

hep-ex2024

Measurement of $\itΛ_\it{b}^0$, $\itΛ_\it{c}^+$ and $Λ$ decay parameters using $\itΛ_\it{b}^0 \to \itΛ_\it{c}^+ h^-$ decays

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1106

A comprehensive study of the angular distributions in the bottom-baryon decays $Λ_{b}^{0} \to Λ_{c}^{+} h^{-} (h = π, K)$ , followed by $Λ_{c}^{+} \to Λ h^{+}$ with $\itΛ\to \it{p} π^…

hep-ex2024★ 2 cited

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

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

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

hep-ex2024

Study of the rare decay $J / ψ \to μ^{+} μ^{-} μ^{+} μ^{-}$

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1099

The rare electromagnetic $J / ψ \to μ^{+} μ^{-} μ^{+} μ^{-}$ decay is observed with a significance greatly exceeding the discovery threshold, using proton-proton collision data collected by the…

hep-ex2024★ 5 cited

Observation of exotic $J / ψ ϕ$ resonant structure in diffractive processes in proton-proton collisions

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

The first study of $J / ψ ϕ$ production in diffractive processes in proton-proton collisions is presented. The study is based on an LHCb dataset recorded at centre-of-mass energy of 1…

hep-ex2024★ 4 cited

Study of charmonium production via the decay to $p p ˉ$ at $s = 13 T e V$

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1063

Charmonium production cross-section in proton-proton collisions is measured at the centre-of-mass energy $s = 13 T e V$ using decays to $p p ˉ$ final state. The study is per…

hep-ex2024★ 6 cited

Search for the rare decay of charmed baryon $Λ_{c}^{+}$ into $p μ^{+} μ^{-}$ final state

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1066

A search for the nonresonant $Λ_{c}^{+} \to p μ^{+} μ^{-}$ decay is performed using proton-proton collision data recorded at a centre-of-mass energy of 13 TeV by the LHCb experiment, corre…

hep-ex2024★ 1 cited

Precision measurement of the $Ξ_{b}^{-}$ baryon lifetime

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1067

A sample of $pp$ collision data, corresponding to an integrated luminosity of 5.5 fb $^{- 1}$ and collected by the LHCb experiment during LHC Run 2, is used to measure the ratio of t…

hep-ex2024★ 14 cited

Measurement of the branching fraction ratios $R (D^{+})$ and $R (D^{*+})$ using muonic $τ$ decays

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1066

The branching fraction ratios of $B^{0} \to D^{+} τ^{-} ν_{τ}$ and $B^{0} \to D^{*+} τ^{-} ν_{τ}$ decays are measured with respect to their muonic counterparts,…

hep-ex2024

Observation of new charmonium(-like) states in $B^{+} \to D^{*\pm} D^{\mp} K^{+}$ decays

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1066

A study of resonant structures in $B^{+} \to D^{*+} D^{-} K^{+}$ and $B^{+} \to D^{*-} D^{+} K^{+}$ decays is performed, using proton-proton collision data at cen…

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★ 3 cited

Search for the lepton-flavor violating decay $B_{s}^{0} \to ϕ μ^{\pm} τ^{\mp}$

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

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

hep-ex2024

Study of $b$ -hadron decays to $Λ_{c}^{+} h^{-} h^{' -}$ final states

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

Decays of $Ξ_{b}^{-}$ and $Ω_{b}^{-}$ baryons to $Λ_{c}^{+} h^{-} h^{' -}$ final states, with $h^{-} h^{' -}$ being $π^{-} π^{-}$ , $K^{-} π^{-}$ and $K^{-} K^{-}$ meson pairs…

hep-ex2024★ 7 cited

Transverse polarization measurement of $Λ$ hyperons in $p$ Ne collisions at $s_{N N}$ = 68.4 GeV with the $\mbox{LHCb}$ detector

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

A measurement of the transverse polarization of the $Λ$ and $Λ ˉ$ hyperons in $p$ Ne fixed-target collisions at $s_{N N}$ = 68.4 GeV is presented using data collected by the…

hep-ex2024★ 7 cited

Search for time-dependent $C P$ violation in $D^{0} \to π^{+} π^{-} π^{0}$ decays

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1067

A measurement of time-dependent $C P$ violation in $D^{0} \to π^{+} π^{-} π^{0}$ decays using a $pp$ collision data sample collected by the LHCb experiment in 2012 and from 2015 to…

hep-ex2024★ 2 cited

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

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

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

hep-ex2024★ 5 cited

First observation of $Λ_{b}^{0} \to Σ_{c}^{() ++} D^{() -} K^{-}$ decays

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

The four decays, $Λ_{b}^{0} \to Σ_{c}^{(*) ++} D^{(*) -} K^{-}$ , are observed for the first time using proton-proton collision data collected with the LHCb detector at a centre…

hep-ex2024★ 8 cited

Search for prompt production of pentaquarks in charm hadron final states

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1093

A search for hidden-charm pentaquark states decaying to a range of $Σ_{c} D ˉ$ and $Λ_{c} D ˉ$ final states, as well as doubly-charmed pentaquark states to $Σ_{c} D$ and $Λ_{c…

hep-ex2024★ 5 cited

Search for the $B_{s}^{0} \to μ^{+} μ^{-} γ$ decay

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

A search for the fully reconstructed $B_{s}^{0} \to μ^{+} μ^{-} γ$ decay is performed at the LHCb experiment using proton-proton collisions at $s = 13$ \,TeV corresponding to an…

hep-ex2024★ 1 cited

Amplitude analysis of the $Λ_{b}^{0} \to p K^{-} γ$ decay

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

The resonant structure of the radiative decay $Λ_{b}^{0} \to p K^{-} γ$ in the region of proton-kaon invariant-mass up to 2.5 GeV $/ c^{2}$ is studied using proton-proton collision data recorde…

hep-ex2024★ 5 cited

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

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

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

hep-ex2024★ 14 cited

Modification of $χ_{c 1}$ (3872) and $ψ$ (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 $χ_{c 1}$ (3872) in proton-nucleus collisions for the first time. Comparison with the charmonium state $ψ$ (2 $S$ ) sugge…

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$^{…

First determination of the spin-parity of Ξc​(3055)+,0 baryons

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

Measurement of $\itΛ_\it{b}^0$, $\itΛ_\it{c}^+$ and Λ decay parameters using $\itΛ_\it{b}^0 \to \itΛ_\it{c}^+ h^-$ decays

Measurement of CP violation observables in D+→K−K+π+ decays

Study of the rare decay J/ψ→μ+μ−μ+μ−

Observation of exotic J/ψϕ resonant structure in diffractive processes in proton-proton collisions

Study of charmonium production via the decay to ppˉ​ at s​=13TeV

Search for the rare decay of charmed baryon Λc+​ into pμ+μ− final state

Precision measurement of the Ξb−​ baryon lifetime

Measurement of the branching fraction ratios R(D+) and R(D∗+) using muonic τ decays

Observation of new charmonium(-like) states in B+→D∗±D∓K+ decays

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

Search for the lepton-flavor violating decay Bs0​→ϕμ±τ∓

Study of b-hadron decays to Λc+​h−h′− final states

Transverse polarization measurement of Λ hyperons in pNe collisions at sNN​​ = 68.4 GeV with the $\mbox{LHCb}$ detector

Search for time-dependent CP violation in D0→π+π−π0 decays

Amplitude analysis and branching fraction measurement of B+→D∗−Ds+​π+ decays

First observation of Λb0​→Σc(∗)++​D(∗)−K− decays

Search for prompt production of pentaquarks in charm hadron final states

Search for the Bs0​→μ+μ−γ decay

Amplitude analysis of the Λb0​→pK−γ decay

First observation of the Λb0​→D+D−Λ decay

Modification of χc1​(3872) and ψ(2S) production in pPb collisions at sNN​​=8.16 TeV

Observation of the Bc+​→J/ψπ+π0 decay

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

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

Measurement of $\itΛ_\it{b}^0$, $\itΛ_\it{c}^+$ and $Λ$ decay parameters using $\itΛ_\it{b}^0 \to \itΛ_\it{c}^+ h^-$ decays

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

Study of the rare decay $J / ψ \to μ^{+} μ^{-} μ^{+} μ^{-}$

Observation of exotic $J / ψ ϕ$ resonant structure in diffractive processes in proton-proton collisions

Study of charmonium production via the decay to $p p ˉ$ at $s = 13 T e V$

Search for the rare decay of charmed baryon $Λ_{c}^{+}$ into $p μ^{+} μ^{-}$ final state

Precision measurement of the $Ξ_{b}^{-}$ baryon lifetime

Measurement of the branching fraction ratios $R (D^{+})$ and $R (D^{*+})$ using muonic $τ$ decays

Observation of new charmonium(-like) states in $B^{+} \to D^{*\pm} D^{\mp} K^{+}$ decays

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

Search for the lepton-flavor violating decay $B_{s}^{0} \to ϕ μ^{\pm} τ^{\mp}$

Study of $b$ -hadron decays to $Λ_{c}^{+} h^{-} h^{' -}$ final states

Transverse polarization measurement of $Λ$ hyperons in $p$ Ne collisions at $s_{N N}$ = 68.4 GeV with the $\mbox{LHCb}$ detector

Search for time-dependent $C P$ violation in $D^{0} \to π^{+} π^{-} π^{0}$ decays

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

First observation of $Λ_{b}^{0} \to Σ_{c}^{() ++} D^{() -} K^{-}$ decays

Search for the $B_{s}^{0} \to μ^{+} μ^{-} γ$ decay

Amplitude analysis of the $Λ_{b}^{0} \to p K^{-} γ$ decay

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

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

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