S. Swientek

activity

20112016

J / ψ p

resonances consistent with pentaquark states in

Λ_{b}^{0} \to J / ψ K^{-} p

decays

1.3k citations · 3.6k across the 42 of their papers we have counts for

collaborators

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42 papers · 1 filter

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★ 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★ 41 cited

Search for the lepton-flavour violating decay $D^{0} \to e^{\pm} μ^{\mp}$

LHCb collaboration, R. Aaij, B. Adeva +720

A search for the lepton-flavour violating decay $D^{0} \to e^{\pm} μ^{\mp}$ is made with a dataset corresponding to an integrated luminosity of 3.0 fb $^{- 1}$ of proton-proton collisions…

hep-ex2015★ 133 cited

Measurement of forward $W$ and $Z$ boson production in $pp$ collisions at $s = 8 Te V$

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

Measurements are presented of electroweak boson production using data from $pp$ collisions at a centre-of-mass energy of $s = 8 Te V$ . The analysis is…

hep-ex2015★ 9 cited

Search for the rare decays $B^{0} \to J / ψ γ$ and $B_{s}^{0} \to J / ψ γ$

LHCb collaboration, R. Aaij, C. Abellán Beteta +725

A search for the rare decay of a $B^{0}$ or $B_{s}^{0}$ meson into the final state $J / ψ γ$ is performed, using data collected by the LHCb experiment in $pp$ collisions at $\sqrt{s}=…

hep-ex2015★ 30 cited

Evidence for the strangeness-changing weak decay $Ξ_{b}^{-} \to Λ_{b}^{0} π^{-}$

LHCb collaboration, R. Aaij, C. Abellán Beteta +724

Using a $pp$ collision data sample corresponding to an integrated luminosity of 3.0~fb $^{- 1}$ , collected by the LHCb detector, we present the first search for the strangeness-chang…

hep-ex2015★ 49 cited

Forward production of $Υ$ mesons in $pp$ collisions at $s = 7$ and 8TeV

LHCb collaboration, R. Aaij, B. Adeva +720

The production of $Υ$ mesons in $pp$ collisions at $= 7$ and $8 TeV$ is studied with the LHCb detector using data samples corresponding to an integrated luminosity of…

hep-ex2015★ 16 cited

Measurement of the $B_{s}^{0} \to ϕϕ$ branching fraction and search for the decay $B^{0} \to ϕϕ$

LHCb collaboration, R. Aaij, B. Adeva +724

Using a dataset corresponding to an integrated luminosity of 3.0 fb $^{- 1}$ collected in $pp$ collisions at centre-of-mass energies of 7 and 8 TeV, the $B_{s}^{0} \to ϕϕ$ branching frac…

hep-ex2015★ 1.3k cited

Observation of $J / ψ p$ resonances consistent with pentaquark states in $Λ_{b}^{0} \to J / ψ K^{-} p$ decays

LHCb collaboration, R. Aaij, B. Adeva +720

Observations of exotic structures in the $J / ψ p$ channel, that we refer to as pentaquark-charmonium states, in $Λ_{b}^{0} \to J / ψ K^{-} p$ decays are presented. The data sample corresponds…

hep-ex2015★ 25 cited

Measurement of the branching fraction ratio $B (B_{c}^{+} \to ψ (2 S) π^{+}) / B (B_{c}^{+} \to J / ψ π^{+})$

LHCb collaboration, R. Aaij, B. Adeva +721

Using $pp$ collision data collected by LHCb at center-of-mass energies $s$ = 7 TeV and 8 TeV, corresponding to an integrated luminosity of 3 fb $^{- 1}$ , the ratio of the bran…

hep-ex2015★ 17 cited

Search for long-lived heavy charged particles using a ring imaging Cherenkov technique at LHCb

LHCb collaboration, R. Aaij, B. Adeva +701

A search is performed for heavy long-lived charged particles using 3.0 fb $^{- 1}$ of pp collisions collected at $s$ = 7 and 8 TeV with the LHCb detector. The search is mainly…

hep-ex2015★ 45 cited

Study of $W$ boson production in association with beauty and charm

LHCb collaboration, R. Aaij, B. Adeva +722

The associated production of a $W$ boson with a jet originating from either a light parton or heavy-flavor quark is studied in the forward region using proton-proton collisions. Th…

hep-ex2015★ 178 cited

Search for the decay $B_{s}^{0} \to D^{0} f_{0} (980)$

LHCb collaboration, R. Aaij, B. Adeva +705

A search for $B_{s}^{0} \to D^{0} f_{0} (980)$ decays is performed using $3.0 fb^{- 1}$ of $pp$ collision data recorded by the LHCb experiment during 2011 and 2012. Th…

hep-ex2015★ 50 cited

Amplitude analysis of $B^{0} \to D ˉ^{0} K^{+} π^{-}$ decays

LHCb collaboration, R. Aaij, B. Adeva +716

The Dalitz plot distribution of $B^{0} \to D ˉ^{0} K^{+} π^{-}$ decays is studied using a data sample corresponding to $3.0 fb^{- 1}$ of $pp$ collision data recorded by the…

hep-ex2015★ 26 cited

A study of $C P$ violation in $B^{\mp} \to D h^{\mp}$ ( $h = K, π$ ) with the modes $D \to K^{\mp} π^{\pm} π^{0}$ , $D \to π^{+} π^{-} π^{0}$ and $D \to K^{+} K^{-} π^{0}$

LHCb collaboration, R. Aaij, B. Adeva +707

An analysis of the decays of $B^{\mp} \to D K^{\mp}$ and $B^{\mp} \to D π^{\mp}$ is presented in which the $D$ meson is reconstructed in the three-body final states $K^\mp…

hep-ex2015★ 178 cited

Determination of the quark coupling strength $∣ V_{u b} ∣$ using baryonic decays

LHCb collaboration, R. Aaij, B. Adeva +707

In the Standard Model of particle physics, the strength of the couplings of the $b$ quark to the $u$ and $c$ quarks, $∣ V_{u b} ∣$ and $∣ V_{c b} ∣$ , are governed by the coupling of the…

hep-ex2015★ 51 cited

Measurement of $C P$ violation in $B^{0} \to J / ψ K_{S}^{0}$ decays

LHCb collaboration, R. Aaij, B. Adeva +704

Measurements are presented of the $C P$ violation observables $S$ and $C$ in the decays of $B^{0}$ and $B^{0}$ mesons to the $J / ψ K_{S}^{0}$ final state. The data sample corresp…

hep-ex2015★ 19 cited

Measurement of $C P$ asymmetries and polarisation fractions in $B_{s}^{0} \to K^{* 0} K ˉ^{* 0}$ decays

LHCb collaboration, R. Aaij, B. Adeva +704

An angular analysis of the decay $B_{s}^{0} \to K^{* 0} K ˉ^{* 0}$ is performed using $pp$ collisions corresponding to an integrated luminosity of $1.0$ $f b^{- 1}$ collecte…

hep-ex2014★ 57 cited

Measurement of the CP-violating phase $β$ in $B^{0} \to J / ψ π^{+} π^{-}$ decays and limits on penguin effects

LHCb collaboration, R. Aaij, B. Adeva +697

Time-dependent CP violation is measured in the $B^{0} \to J / ψ π^{+} π^{-}$ channel for each $π^{+} π^{-}$ resonant final state using data collected with an integrated luminosity of 3.0 f…

hep-ex2014★ 24 cited

Study of the rare $B_{s}^{0}$ and $B^{0}$ decays into the $π^{+} π^{-} μ^{+} μ^{-}$ final state

LHCb collaboration, R. Aaij, B. Adeva +699

A search for the rare decays $B_{s}^{0} \to π^{+} π^{-} μ^{+} μ^{-}$ and $B^{0} \to π^{+} π^{-} μ^{+} μ^{-}$ is performed in a data set corresponding to an integrated luminosity of 3.0 fb $^{- 1}$ collected by…

hep-ex2014★ 36 cited

Measurement of the $χ_{b} (3 P)$ mass and of the relative rate of $χ_{b 1} (1 P)$ and $χ_{b 2} (1 P)$ production

LHCb collaboration, R. Aaij, B. Adeva +696

The production of $χ_{b}$ mesons in proton-proton collisions is studied using a data sample collected by the LHCb detector, at centre-of-mass energies of $s = 7$ and $8$ TeV and…

hep-ex2014★ 40 cited

Search for CP violation in $D^{0} \to π^{-} π^{+} π^{0}$ decays with the energy test

LHCb collaboration, R. Aaij, B. Adeva +703

A search for time-integrated CP violation in the Cabibbo-suppressed decay $D^{0} \to π^{-} π^{+} π^{0}$ is performed using for the first time an unbinned model-independent technique known as t…

hep-ex2014★ 71 cited

Search for the lepton flavour violating decay $τ^{-} \to μ^{-} μ^{+} μ^{-}$

LHCb collaboration, R. Aaij, C. Abellán Beteta +702

A search for the lepton flavour violating decay $τ^{-} \to μ^{-} μ^{+} μ^{-}$ is performed with the LHCb experiment. The data sample corresponds to an integrated luminosity of $1.0\mathrm{\,f…

hep-ex2014★ 30 cited

Determination of gamma and -2beta_s from charmless two-body decays of beauty mesons

LHCb collaboration, R. Aaij, C. Abellán Beteta +702

Using the latest LHCb measurements of time-dependent CP violation in the B^0_s -> K^+K^- decay, a U-spin relation between the decay amplitudes of B^0_s -> K^+K^- and B^0 -> π^+π^-…

A precise measurement of the B0 meson oscillation frequency

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

Search for the lepton-flavour violating decay D0→e±μ∓

Measurement of forward W and Z boson production in pp collisions at s​=8TeV

Search for the rare decays B0→J/ψγ and Bs0​→J/ψγ

Evidence for the strangeness-changing weak decay Ξb−​→Λb0​π−

Forward production of Υ mesons in pp collisions at s​=7 and 8TeV

Measurement of the Bs0​→ϕϕ branching fraction and search for the decay B0→ϕϕ

Observation of J/ψp resonances consistent with pentaquark states in Λb0​→J/ψK−p decays

Measurement of the branching fraction ratio B(Bc+​→ψ(2S)π+)/B(Bc+​→J/ψπ+)

Search for long-lived heavy charged particles using a ring imaging Cherenkov technique at LHCb

Study of W boson production in association with beauty and charm

Search for the decay Bs0​→D0f0​(980)

Amplitude analysis of B0→Dˉ0K+π− decays

A study of CP violation in B∓→Dh∓ (h=K,π) with the modes D→K∓π±π0, D→π+π−π0 and D→K+K−π0

Determination of the quark coupling strength ∣Vub​∣ using baryonic decays

Measurement of CP violation in B0→J/ψKS0​ decays

Measurement of CP asymmetries and polarisation fractions in Bs0​→K∗0Kˉ∗0 decays

Measurement of the CP-violating phase β in B0→J/ψπ+π− decays and limits on penguin effects

Study of the rare Bs0​ and B0 decays into the π+π−μ+μ− final state

Measurement of the χb​(3P) mass and of the relative rate of χb1​(1P) and χb2​(1P) production

Search for CP violation in D0→π−π+π0 decays with the energy test

Search for the lepton flavour violating decay τ−→μ−μ+μ−

Determination of gamma and -2beta_s from charmless two-body decays of beauty mesons

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

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

Search for the lepton-flavour violating decay $D^{0} \to e^{\pm} μ^{\mp}$

Measurement of forward $W$ and $Z$ boson production in $pp$ collisions at $s = 8 Te V$

Search for the rare decays $B^{0} \to J / ψ γ$ and $B_{s}^{0} \to J / ψ γ$

Evidence for the strangeness-changing weak decay $Ξ_{b}^{-} \to Λ_{b}^{0} π^{-}$

Forward production of $Υ$ mesons in $pp$ collisions at $s = 7$ and 8TeV

Measurement of the $B_{s}^{0} \to ϕϕ$ branching fraction and search for the decay $B^{0} \to ϕϕ$

Observation of $J / ψ p$ resonances consistent with pentaquark states in $Λ_{b}^{0} \to J / ψ K^{-} p$ decays

Measurement of the branching fraction ratio $B (B_{c}^{+} \to ψ (2 S) π^{+}) / B (B_{c}^{+} \to J / ψ π^{+})$

Study of $W$ boson production in association with beauty and charm

Search for the decay $B_{s}^{0} \to D^{0} f_{0} (980)$

Amplitude analysis of $B^{0} \to D ˉ^{0} K^{+} π^{-}$ decays

A study of $C P$ violation in $B^{\mp} \to D h^{\mp}$ ( $h = K, π$ ) with the modes $D \to K^{\mp} π^{\pm} π^{0}$ , $D \to π^{+} π^{-} π^{0}$ and $D \to K^{+} K^{-} π^{0}$

Determination of the quark coupling strength $∣ V_{u b} ∣$ using baryonic decays

Measurement of $C P$ violation in $B^{0} \to J / ψ K_{S}^{0}$ decays

Measurement of $C P$ asymmetries and polarisation fractions in $B_{s}^{0} \to K^{* 0} K ˉ^{* 0}$ decays

Measurement of the CP-violating phase $β$ in $B^{0} \to J / ψ π^{+} π^{-}$ decays and limits on penguin effects

Study of the rare $B_{s}^{0}$ and $B^{0}$ decays into the $π^{+} π^{-} μ^{+} μ^{-}$ final state

Measurement of the $χ_{b} (3 P)$ mass and of the relative rate of $χ_{b 1} (1 P)$ and $χ_{b 2} (1 P)$ production

Search for CP violation in $D^{0} \to π^{-} π^{+} π^{0}$ decays with the energy test

Search for the lepton flavour violating decay $τ^{-} \to μ^{-} μ^{+} μ^{-}$