D. Perez

activity

20122026

J / ψ p

resonances consistent with pentaquark states in

Λ_{b}^{0} \to J / ψ K^{-} p

decays

1.3k citations · 11.5k across the 159 of their papers we have counts for

collaborators

Showing 2016 · hep-exShow all

25 papers · 2 filters

hep-ex2016★ 66 cited

Measurement of the phase difference between short- and long-distance amplitudes in the $B^{+} \to K^{+} μ^{+} μ^{-}$ decay

LHCb collaboration, R. Aaij, B. Adeva +764

A measurement of the phase difference between the short- and long-distance contributions to the $B^{+} \to K^{+} μ^{+} μ^{-}$ decay is performed by analysing the dimuon mass distribut…

hep-ex2016★ 43 cited

Search for Higgs-like bosons decaying into long-lived exotic particles

LHCb collaboration, R. Aaij, B. Adeva +736

A search is presented for massive long-lived particles, in the 20-60 GeV mass range with lifetimes between 5 and 100 ps. The dataset used corresponds to 0.62 1\fb of proton-proton…

hep-ex2016★ 92 cited

Search for structure in the $B_{s}^{0} π^{\pm}$ invariant mass spectrum

LHCb collaboration, R. Aaij, B. Adeva +761

The $B_{s}^{0} π^{\pm}$ invariant mass distribution is investigated in order to search for possible exotic meson states. The analysis is based on a data sample recorded with the LHCb dete…

hep-ex2016★ 33 cited

Measurement of the properties of the $Ξ_{b}^{* 0}$ baryon

LHCb collaboration, R. Aaij, C. Abellán Beteta +731

We perform a search for near-threshold $Ξ_{b}^{0}$ resonances decaying to $Ξ_{b}^{-} π^{+}$ in a sample of proton-proton collision data corresponding to an integrated luminosity of 3 fb$^{-1…

hep-ex2016★ 136 cited

Amplitude analysis of $B^{+} \to J / ψ ϕ K^{+}$ decays

LHCb collaboration, R. Aaij, B. Adeva +751

The first full amplitude analysis of $B^{+} \to J / ψ ϕ K^{+}$ with $J / ψ \to μ^{+} μ^{-}$ , $ϕ \to K^{+} K^{-}$ decays is performed with a data sample of 3 fb $^{- 1}$ of $pp$ collision data collected at $…

hep-ex2016★ 224 cited

Observation of $J / ψ ϕ$ structures consistent with exotic states from amplitude analysis of $B^{+} \to J / ψ ϕ K^{+}$ decays

LHCb collaboration, R. Aaij, B. Adeva +751

hep-ex2016★ 154 cited

Evidence for exotic hadron contributions to $Λ_{b}^{0} \to J / ψ p π^{-}$ decays

LHCb collaboration, R. Aaij, C. Abellán Beteta +739

A full amplitude analysis of $Λ_{b}^{0} \to J / ψ p π^{-}$ decays is performed with a data sample acquired with the LHCb detector from 7 and 8 TeV $pp$ collisions, corresponding to an integ…

hep-ex2016

Measurements of the S-wave fraction in $B^{0} \to K^{+} π^{-} μ^{+} μ^{-}$ decays and the $B^{0} \to K^{*} (892)^{0} μ^{+} μ^{-}$ differential branching fraction

LHCb collaboration, R. Aaij, B. Adeva +731

A measurement of the differential branching fraction of the decay $B^{0} \to K^{*} (892)^{0} μ^{+} μ^{-}$ is presented together with a determination of the S-wave fraction…

hep-ex2016★ 21 cited

Measurement of the mass and lifetime of the $Ω_{b}^{-}$ baryon

R. Aaij, C. Abellán Beteta, B. Adeva +727

A proton-proton collision data sample, corresponding to an integrated luminosity of 3 fb $^{- 1}$ collected by LHCb at $s = 7$ and 8 TeV, is used to reconstruct $63 \pm 9$ $Ω_b^-\…

hep-ex2016★ 40 cited

Measurement of the $C P$ asymmetry in $B_{s}^{0} - B_{s}^{0}$ mixing

LHCb collaboration, R. Aaij, B. Adeva +735

The $C P$ asymmetry in the mixing of $B_{s}^{0}$ and $B_{s}^{0}$ mesons is measured in proton-proton collision data corresponding to an integrated luminosity of 3.0 fb $^{- 1}$ ,…

hep-ex2016★ 10 cited

Measurement of the CKM angle $γ$ using $B^{0} \to D K^{* 0}$ with $D \to K_{S}^{0} π^{+} π^{-}$ decays

LHCb collaboration, R. Aaij, C. Abellán Beteta +716

A model-dependent amplitude analysis of the decay $B^{0} \to D (K_{S}^{0} π^{+} π^{-}) K^{* 0}$ is performed using proton-proton collision data corresponding to an integrated luminosity o…

hep-ex2016★ 160 cited

Model-independent evidence for $J / ψ p$ contributions to $Λ_{b}^{0} \to J / ψ p K^{-}$ decays

LHCb collaboration, R. Aaij, C. Abellán Beteta +731

The data sample of $Λ_{b}^{0} \to J / ψ p K^{-}$ decays acquired with the LHCb detector from 7 and 8~TeV $pp$ collisions, corresponding to an integrated luminosity of 3 fb $^{- 1}$ , is inspect…

hep-ex2016★ 35 cited

A precise measurement of the $B^{0}$ meson oscillation frequency

LHCb collaboration, R. Aaij, C. Abellán Beteta +730

The oscillation frequency, $Δ m_{d}$ , of $B^{0}$ mesons is measured using semileptonic decays with a $D^{-}$ or $D^{*-}$ meson in the final state, in a data sample of $pp$ collisions coll…

hep-ex2016★ 16 cited

Model-independent measurement of the CKM angle $γ$ using $B^{0} \to D K^{* 0}$ decays with $D \to K_{S}^{0} π^{+} π^{-}$ and $K_{S}^{0} K^{+} K^{-}$

R. Aaij, C. Abellán Beteta, B. Adeva +727

A binned Dalitz plot analysis of the decays $B^{0} \to D K^{* 0}$ , with $D \to K_{S}^{0} π^{+} π^{-}$ and $K_{S}^{0} K^{+} K^{-}$ , is performed to measure the observables $x_{\pm}$ …

hep-ex2016★ 39 cited

Measurement of $C P$ observables in $B^{\pm} \to D K^{\pm}$ and $B^{\pm} \to D π^{\pm}$ with two- and four-body $D$ decays

LHCb collaboration, R. Aaij, C. Abellán Beteta +730

Measurements of $C P$ observables in $B^{\pm} \to D K^{\pm}$ and $B^{\pm} \to D π^{\pm}$ decays are presented where the $D$ meson is reconstructed in the final states $K^\…

hep-ex2016★ 18 cited

Search for $B_{c}^{+}$ decays to the $p p ˉ π^{+}$ final state

LHCb collaboration, R. Aaij, C. Abellán Beteta +730

A search for the decays of the $B_{c}^{+}$ meson to $p p ˉ π^{+}$ is performed for the first time using a data sample corresponding to an integrated luminosity of 3.0 $fb^{- 1}$ …

hep-ex2016★ 30 cited

Observation of $Λ_{b}^{0} \to ψ (2 S) p K^{-}$ and $Λ_{b}^{0} \to J / ψ π^{+} π^{-} p K^{-}$ decays and a measurement of the $Λ_{b}^{0}$ baryon mass

LHCb collaboration, R. Aaij, C. Abellán Beteta +733

The decays $Λ_{b}^{0} \to ψ (2 S) p K^{-}$ and $Λ_{b}^{0} \to J / ψ π^{+} π^{-} p K^{-}$ are observed in a data sample corresponding to an integrated luminosity of 3fb $^{- 1}$ , collected in proton-proton…

hep-ex2016★ 42 cited

Search for violations of Lorentz invariance and $C P T$ symmetry in $B_{(s)}^{0}$ mixing

LHCb collaboration, R. Aaij, C. Abellán Beteta +729

Violations of $C P T$ symmetry and Lorentz invariance are searched for by studying interference effects in $B^{0}$ mixing and in $B_{s}^{0}$ mixing. Samples of $ B^0\to J/ψK^0_{\mathrm{…

hep-ex2016★ 23 cited

Observation of the $Λ_{b}^{0} \to Λ ϕ$ decay

LHCb collaboration, R. Aaij, C. Abellán Beteta +730

The $Λ_{b}^{0} \to Λ ϕ$ decay is observed using data corresponding to an integrated luminosity of 3.0fb $^{- 1}$ recorded by the LHCb experiment. The decay proceeds at leading order via a $…

hep-ex2016★ 17 cited

Study of $D_{s J}^{() +}$ mesons decaying to $D^{+} K_{S}^{0}$ and $D^{* 0} K^{+}$ final states

LHCb collaboration, R. Aaij, C. Abellán Beteta +730

A search is performed for $D_{s J}^{(*) +}$ mesons in the reactions $pp \to D^{*+} K_{S}^{0} X$ and $pp \to D^{* 0} K^{+} X$ using data collected at centre-of-mass energies of 7 and 8…

hep-ex2016★ 5 cited

Measurement of the $B_{s}^{0} \to D_{s}^{() +} D_{s}^{() -}$ branching fractions

LHCb collaboration, R. Aaij, C. Abellán Beteta +730

The branching fraction of the decay $B_{s}^{0} \to D_{s}^{(*) +} D_{s}^{(*) -}$ is measured using $pp$ collision data corresponding to an integrated luminosity of $1.0 f b^{- 1}$ …

hep-ex2016★ 26 cited

A new algorithm for identifying the flavour of $B_{s}^{0}$ mesons at LHCb

LHCb collaboration, R. Aaij, C. Abellán Beteta +732

A new algorithm for the determination of the initial flavour of $B_{s}^{0}$ mesons is presented. The algorithm is based on two neural networks and exploits the $b$ hadron production me…

hep-ex2016★ 35 cited

First observation of $D^{0} - D ˉ^{0}$ oscillations in $D^{0} \to K^{+} π^{-} π^{+} π^{-}$ decays and measurement of the associated coherence parameters

LHCb collaboration, R. Aaij, C. Abellán Beteta +733

Charm meson oscillations are observed in a time-dependent analysis of the ratio of $D^{0} \to K^{+} π^{-} π^{+} π^{-}$ to $D^{0} \to K^{-} π^{+} π^{-} π^{+}$ decay rates, using data corresponding to an integr…

hep-ex2016★ 57 cited

Measurement of the difference of time-integrated CP asymmetries in $D^{0} \to K^{-} K^{+}$ and $D^{0} \to π^{-} π^{+}$ decays

LHCb collaboration, R. Aaij, C. Abellán Beteta +728

A search for CP violation in $D^{0} \to K^{-} K^{+}$ and $D^{0} \to π^{-} π^{+}$ decays is performed using $pp$ collision data, corresponding to an integrated luminos…

Measurement of the phase difference between short- and long-distance amplitudes in the B+→K+μ+μ− decay

Search for Higgs-like bosons decaying into long-lived exotic particles

Search for structure in the Bs0​π± invariant mass spectrum

Measurement of the properties of the Ξb∗0​ baryon

Amplitude analysis of B+→J/ψϕK+ decays

Observation of J/ψϕ structures consistent with exotic states from amplitude analysis of B+→J/ψϕK+ decays

Evidence for exotic hadron contributions to Λb0​→J/ψpπ− decays

Measurements of the S-wave fraction in B0→K+π−μ+μ− decays and the B0→K∗(892)0μ+μ− differential branching fraction

Measurement of the mass and lifetime of the Ωb−​ baryon

Measurement of the CP asymmetry in Bs0​−Bs0​ mixing

Measurement of the CKM angle γ using B0→DK∗0 with D→KS0​π+π− decays

Model-independent evidence for J/ψp contributions to Λb0​→J/ψpK− decays

A precise measurement of the B0 meson oscillation frequency

Model-independent measurement of the CKM angle γ using B0→DK∗0 decays with D→KS0​π+π− and KS0​K+K−

Measurement of CP observables in B±→DK± and B±→Dπ± with two- and four-body D decays

Search for Bc+​ decays to the ppˉ​π+ final state

Observation of Λb0​→ψ(2S)pK− and Λb0​→J/ψπ+π−pK− decays and a measurement of the Λb0​ baryon mass

Search for violations of Lorentz invariance and CPT symmetry in B(s)0​ mixing

Observation of the Λb0​→Λϕ decay

Study of DsJ(∗)+​ mesons decaying to D∗+KS0​ and D∗0K+ final states

Measurement of the Bs0​→Ds(∗)+​Ds(∗)−​ branching fractions

A new algorithm for identifying the flavour of Bs0​ mesons at LHCb

First observation of D0−Dˉ0 oscillations in D0→K+π−π+π− decays and measurement of the associated coherence parameters

Measurement of the difference of time-integrated CP asymmetries in D0→K−K+ and D0→π−π+ decays

Measurement of the phase difference between short- and long-distance amplitudes in the $B^{+} \to K^{+} μ^{+} μ^{-}$ decay

Search for structure in the $B_{s}^{0} π^{\pm}$ invariant mass spectrum

Measurement of the properties of the $Ξ_{b}^{* 0}$ baryon

Amplitude analysis of $B^{+} \to J / ψ ϕ K^{+}$ decays

Observation of $J / ψ ϕ$ structures consistent with exotic states from amplitude analysis of $B^{+} \to J / ψ ϕ K^{+}$ decays

Evidence for exotic hadron contributions to $Λ_{b}^{0} \to J / ψ p π^{-}$ decays

Measurements of the S-wave fraction in $B^{0} \to K^{+} π^{-} μ^{+} μ^{-}$ decays and the $B^{0} \to K^{*} (892)^{0} μ^{+} μ^{-}$ differential branching fraction

Measurement of the mass and lifetime of the $Ω_{b}^{-}$ baryon

Measurement of the $C P$ asymmetry in $B_{s}^{0} - B_{s}^{0}$ mixing

Measurement of the CKM angle $γ$ using $B^{0} \to D K^{* 0}$ with $D \to K_{S}^{0} π^{+} π^{-}$ decays

Model-independent evidence for $J / ψ p$ contributions to $Λ_{b}^{0} \to J / ψ p K^{-}$ decays

A precise measurement of the $B^{0}$ meson oscillation frequency

Model-independent measurement of the CKM angle $γ$ using $B^{0} \to D K^{* 0}$ decays with $D \to K_{S}^{0} π^{+} π^{-}$ and $K_{S}^{0} K^{+} K^{-}$

Measurement of $C P$ observables in $B^{\pm} \to D K^{\pm}$ and $B^{\pm} \to D π^{\pm}$ with two- and four-body $D$ decays

Search for $B_{c}^{+}$ decays to the $p p ˉ π^{+}$ final state

Observation of $Λ_{b}^{0} \to ψ (2 S) p K^{-}$ and $Λ_{b}^{0} \to J / ψ π^{+} π^{-} p K^{-}$ decays and a measurement of the $Λ_{b}^{0}$ baryon mass

Search for violations of Lorentz invariance and $C P T$ symmetry in $B_{(s)}^{0}$ mixing

Observation of the $Λ_{b}^{0} \to Λ ϕ$ decay

Study of $D_{s J}^{() +}$ mesons decaying to $D^{+} K_{S}^{0}$ and $D^{* 0} K^{+}$ final states

Measurement of the $B_{s}^{0} \to D_{s}^{() +} D_{s}^{() -}$ branching fractions

A new algorithm for identifying the flavour of $B_{s}^{0}$ mesons at LHCb

First observation of $D^{0} - D ˉ^{0}$ oscillations in $D^{0} \to K^{+} π^{-} π^{+} π^{-}$ decays and measurement of the associated coherence parameters

Measurement of the difference of time-integrated CP asymmetries in $D^{0} \to K^{-} K^{+}$ and $D^{0} \to π^{-} π^{+}$ decays