D. Gascón

activity

20032026

J / ψ p

resonances consistent with pentaquark states in

Λ_{b}^{0} \to J / ψ K^{-} p

decays

1.3k citations · 18.5k across the 268 of their papers we have counts for

collaborators

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244 papers · 1 filter

hep-ex2023★ 78 cited

The LHCb upgrade I

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1305

The LHCb upgrade represents a major change of the experiment. The detectors have been almost completely renewed to allow running at an instantaneous luminosity five times larger th…

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★ 14 cited

Search for long-lived particles decaying to $e^{\pm} μ^{\mp} ν$

LHCb collaboration, R. Aaij, C. Abellán Beteta +975

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

hep-ex2020★ 3 cited

Observation of the $Λ_{b}^{0} \to Λ_{c}^{+} K^{+} K^{-} π^{-}$ decay

LHCb collaboration, R. Aaij, C. Abellán Beteta +975

The $Λ_{b}^{0} \to Λ_{c}^{+} K^{+} K^{-} π^{-}$ decay is observed for the first time using a data sample of proton-proton collisions at centre-of-mass energies of $s = 7$ …

hep-ex2020★ 29 cited

Search for heavy neutral leptons in $W^{+} \to μ^{+} μ^{\pm} jet$ decays

LHCb collaboration, R. Aaij, C. Abellán Beteta +980

A search is performed for heavy neutrinos in the decay of a $W$ boson into two muons and a jet. The data set corresponds to an integrated luminosity of approximately $3.0 \text{ fb…

hep-ex2020

Searches for 25 rare and forbidden decays of $D^{+}$ and $D_{s}^{+}$ mesons

LHCb collaboration, R. Aaij, C. Abellán Beteta +998

A search is performed for rare and forbidden charm decays of the form $D_{(s)}^{+} \to h^{\pm} ℓ^{+} ℓ^{(') \mp}$ , where $h^{\pm}$ is a pion or kaon and $ℓ^{(^{'}) \pm}$ is an ele…

hep-ex2020★ 16 cited

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

LHCb collaboration, R. Aaij, C. Abellán 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…

hep-ex2020★ 8 cited

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. Abellán 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…

hep-ex2020★ 34 cited

Measurement of the CKM angle $γ$ in $B^{\pm} \to D K^{\pm}$ and $B^{\pm} \to D π^{\pm}$ decays with $D \to K_{S}^{0} h^{+} h^{-}$

LHCb collaboration, R. Aaij, C. Abellán Beteta +975

A measurement of $C P$ -violating observables is performed using the decays $B^{\pm} \to D K^{\pm}$ and $B^{\pm} \to D π^{\pm}$ , where the $D$ meson is reconstructed in one of the self-conjuga…

hep-ex2020★ 26 cited

Strong constraints on the $b \to s γ$ photon polarisation from $B^{0} \to K^{* 0} e^{+} e^{-}$ decays

LHCb collaboration, R. Aaij, C. Abellán Beteta +976

An angular analysis of the $B^{0} \to K^{* 0} e^{+} e^{-}$ decay is performed using a data sample corresponding to an integrated luminosity of $9 fb^{- 1}$ of $pp$ collisions collect…

hep-ex2020★ 33 cited

Search for the doubly heavy $Ξ_{b c}^{0}$ baryon via decays to $D^{0} p K^{-}$

LHCb collaboration, R. Aaij, C. Abellán Beteta +987

A search for the doubly heavy $Ξ_{b c}^{0}$ baryon using its decay to the $D^{0} p K^{-}$ final state is performed using proton-proton collision data at a centre-of-mass energy of…

hep-ex2020★ 224 cited

Amplitude analysis of the $B^{+} \to D^{+} D^{-} K^{+}$ decay

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

Results are reported from an amplitude analysis of the $B^{+} \to D^{+} D^{-} K^{+}$ decay. The analysis is carried out using LHCb proton-proton collision data taken at $s = 7, 8,$ and $1…

hep-ex2020★ 192 cited

Model-independent study of structure in $B^{+} \to D^{+} D^{-} K^{+}$ decays

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

The only anticipated resonant contributions to $B^{+} \to D^{+} D^{-} K^{+}$ decays are charmonium states in the $D^{+} D^{-}$ channel. A model-independent analysis, using LHCb proton-proton colli…

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★ 5 cited

First observation of the decay $Λ_{b}^{0} \to η_{c} (1 S) p K^{-}$

LHCb collaboration, R. Aaij, C. Abellán Beteta +985

The decay $Λ_{b}^{0} \to η_{c} (1 S) p K^{-}$ is observed for the first time using a data sample of proton-proton collisions, corresponding to an integrated luminosity of 5.5 $f b^{- 1}$ , coll…

hep-ex2020★ 20 cited

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

LHCb collaboration, R. Aaij, C. Abellán 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…

hep-ex2020★ 5 cited

First observation of the decay $B^{0} \to D^{0} D^{0} K^{+} π^{-}$

LHCb collaboration, R. Aaij, C. Abellán Beteta +965

The first observation of the decay $B^{0} \to D^{0} D^{0} K^{+} π^{-}$ is reported using proton-proton collision data corresponding to an integrated luminosity of 4.7 $\…

hep-ex2020★ 32 cited

Searches for low-mass dimuon resonances

LHCb collaboration, R. Aaij, C. Abellán Beteta +965

Searches are performed for a low-mass dimuon resonance, $X$ , produced in proton-proton collisions at a center-of-mass energy of 13 TeV, using a data sample corresponding to an inte…

hep-ex2020★ 414 cited

Observation of structure in the $J / ψ$ -pair mass spectrum

LHCb collaboration, R. Aaij, C. Abellán Beteta +964

Using proton-proton collision data at centre-of-mass energies of $s = 7$ , $8$ and $13 TeV$ recorded by the LHCb experiment at the Large Hadron Collider, correspond…

hep-ex2020★ 29 cited

Search for $C P$ violation in $Ξ_{c}^{+} \to p K^{-} π^{+}$ decays using model-independent techniques

LHCb collaboration, R. Aaij, C. Abellán Beteta +950

A first search for $C P$ violation in the Cabibbo-suppressed $Ξ_{c}^{+} \to p K^{-} π^{+}$ decay is performed using both a binned and an unbinned model-independent technique in the Dal…

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★ 138 cited

Study of the lineshape of the $χ_{c 1} (3872)$ state

LHCb collaboration, R. Aaij, C. Abellán Beteta +965

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

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…

The LHCb upgrade I

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

Search for long-lived particles decaying to e±μ∓ν

Observation of the Λb0​→Λc+​K+K−π− decay

Search for heavy neutral leptons in W+→μ+μ±jet decays

Searches for 25 rare and forbidden decays of D+ and Ds+​ mesons

Observation of new excited Bs0​ states

Measurement of differential bbˉ- and ccˉ-dijet cross-sections in the forward region of pp collisions at s​=13 TeV

Measurement of the CKM angle γ in B±→DK± and B±→Dπ± decays with D→KS0​h+h−

Strong constraints on the b→sγ photon polarisation from B0→K∗0e+e− decays

Search for the doubly heavy Ξbc0​ baryon via decays to D0pK−

Amplitude analysis of the B+→D+D−K+ decay

Model-independent study of structure in B+→D+D−K+ decays

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

First observation of the decay Λb0​→ηc​(1S)pK−

Observation of enhanced double parton scattering in proton-lead collisions at sNN​​=8.16 TeV

First observation of the decay B0→D0D0K+π−

Searches for low-mass dimuon resonances

Observation of structure in the J/ψ-pair mass spectrum

Search for CP violation in Ξc+​→pK−π+ decays using model-independent techniques

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

Study of the lineshape of the χc1​(3872) state

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

Search for long-lived particles decaying to $e^{\pm} μ^{\mp} ν$

Observation of the $Λ_{b}^{0} \to Λ_{c}^{+} K^{+} K^{-} π^{-}$ decay

Search for heavy neutral leptons in $W^{+} \to μ^{+} μ^{\pm} jet$ decays

Searches for 25 rare and forbidden decays of $D^{+}$ and $D_{s}^{+}$ mesons

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

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

Measurement of the CKM angle $γ$ in $B^{\pm} \to D K^{\pm}$ and $B^{\pm} \to D π^{\pm}$ decays with $D \to K_{S}^{0} h^{+} h^{-}$

Strong constraints on the $b \to s γ$ photon polarisation from $B^{0} \to K^{* 0} e^{+} e^{-}$ decays

Search for the doubly heavy $Ξ_{b c}^{0}$ baryon via decays to $D^{0} p K^{-}$

Amplitude analysis of the $B^{+} \to D^{+} D^{-} K^{+}$ decay

Model-independent study of structure in $B^{+} \to D^{+} D^{-} K^{+}$ decays

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

First observation of the decay $Λ_{b}^{0} \to η_{c} (1 S) p K^{-}$

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

First observation of the decay $B^{0} \to D^{0} D^{0} K^{+} π^{-}$

Observation of structure in the $J / ψ$ -pair mass spectrum

Search for $C P$ violation in $Ξ_{c}^{+} \to p K^{-} π^{+}$ decays using model-independent techniques

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

Study of the lineshape of the $χ_{c 1} (3872)$ state

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