R. Fay

activity

20142018

most citedMeasurement of the ratio of branching fractions

B (B^{0} \to D^{*+} τ^{-} ν_{τ}) / B (B^{0} \to D^{*+} μ^{-} ν_{μ})

635 citations · 3.5k across the 33 of their papers we have counts for

collaborators

33 papers

hep-ex2018★ 21 cited

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

LHCb collaboration, R. Aaij, B. Adeva +819

A binned Dalitz plot analysis of $B^{\pm} \to D K^{\pm}$ decays, with $D \to K_{S}^{0} π^{+} π^{-}$ and $D \to K_{S}^{0} K^{+} K^{-}$ , is used to perform a measurement of the CP-violating obse…

hep-ex2017★ 318 cited

Measurement of the ratio of the $B^{0} \to D^{-} τ^{+} ν_{τ}$ and $B^{0} \to D^{-} μ^{+} ν_{μ}$ branching fractions using three-prong $τ$ -lepton decays

LHCb collaboration, R. Aaij, B. Adeva +806

The ratio of branching fractions $R (D^{*-}) \equiv B (B^{0} \to D^{*-} τ^{+} ν_{τ}) / B (B^{0} \to D^{*-} μ^{+} ν_{μ})$ is measured using a data sample of proton-proton colli…

hep-ex2017★ 523 cited

Observation of the doubly charmed baryon $Ξ_{cc}^{++}$

LHCb collaboration, R. Aaij, B. Adeva +805

A highly significant structure is observed in the $Λ_{c}^{+} K^{-} π^{+} π^{+}$ mass spectrum, where the $Λ_{c}^{+}$ baryon is reconstructed in the decay mode $p K^{-} π^{+}$ . The structure is consistent…

hep-ex2017★ 304 cited

Observation of five new narrow $Ω_{c}^{0}$ states decaying to $Ξ_{c}^{+} K^{-}$

LHCb collaboration, R. Aaij, B. Adeva +772

The $Ξ_{c}^{+} K^{-}$ mass spectrum is studied with a sample of $pp$ collision data corresponding to an integrated luminosity of 3.3 fb $^{- 1}$ , collected by the LHCb experiment. The $Ξ_c…

hep-ex2017★ 82 cited

Study of $J / ψ$ production in jets

LHCb collaboration, R. Aaij, B. Adeva +774

The production of $J / ψ$ mesons in jets is studied in the forward region of proton-proton collisions using data collected with the LHCb detector at a center-of-mass energy of 13 TeV…

hep-ex2016★ 7 cited

Measurement of the ratio of branching fractions and difference in $C P$ asymmetries of the decays $B^{+} \to J / ψ π^{+}$ and $B^{+} \to J / ψ K^{+}$

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

The ratio of branching fractions and the difference in $C P$ asymmetries of the decays $B^{+} \to J / ψ π^{+}$ and $B^{+} \to J / ψ K^{+}$ are measured using a data sample of $pp$ collisions collec…

hep-ex2016★ 35 cited

First experimental study of photon polarization in radiative $B_{s}^{0}$ decays

LHCb collaboration, R. Aaij, B. Adeva +765

The polarization of photons produced in radiative $B_{s}^{0}$ decays is studied for the first time. The data are recorded by the LHCb experiment in $pp$ collisions corresponding to…

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★ 31 cited

Observation of $η_{c} (2 S) \to p p ˉ$ and search for $X (3872) \to p p ˉ$ decays

LHCb collaboration, R. Aaij, B. Adeva +750

The first observation of the decay $η_{c} (2 S) \to p p ˉ$ is reported using proton-proton collision data corresponding to an integrated luminosity of $3.0 f b^{- 1}$ recorded…

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★ 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

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★ 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★ 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★ 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-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★ 46 cited

A model-independent confirmation of the $Z (4430)^{-}$ state

LHCb collaboration, R. Aaij, B. Adeva +723

The decay $B^{0} \to ψ (2 S) K^{+} π^{-}$ is analyzed using $3 f b^{- 1}$ of $pp$ collision data collected with the LHCb detector. A model-independent description of the $ψ (2 S) π$ mass spe…

hep-ex2015★ 157 cited

Search for hidden-sector bosons in $B^{0} \to K^{* 0} μ^{+} μ^{-}$ decays

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

A search is presented for hidden-sector bosons, $χ$ , produced in the decay $B^{0} \to K^{*} (892)^{0} χ$ , with $K^{*} (892)^{0} \to K^{+} π^{-}$ and $χ \to μ^{+} μ^{-}$ . The search is performed u…

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★ 635 cited

Measurement of the ratio of branching fractions $B (B^{0} \to D^{+} τ^{-} ν_{τ}) / B (B^{0} \to D^{+} μ^{-} ν_{μ})$

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

The branching fraction ratio $R (D^{*}) \equiv B (B^{0} \to D^{*+} τ^{-} ν_{τ}) / B (B^{0} \to D^{*+} μ^{-} ν_{μ})$ is measured…

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-ex2014★ 75 cited

Observation of two new $Ξ_{b}^{-}$ baryon resonances

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

Two structures are observed close to the kinematic threshold in the $Ξ_{b}^{0} π^{-}$ mass spectrum in a sample of proton-proton collision data, corresponding to an integrated luminosity…

hep-ex2014★ 54 cited

Measurement of the semileptonic $C P$ asymmetry in $B^{0} - B^{0}$ mixing

LHCb collaboration, R. Aaij, B. Adeva +700

The semileptonic $C P$ asymmetry in $B^{0} - B^{0}$ mixing, $a_{sl}^{d}$ , is measured in proton-proton collision data, corresponding to an integrated luminosity of 3.0 fb$^…

hep-ex2014★ 46 cited

Precision measurement of the mass and lifetime of the Xi_b^- baryon

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

We report on measurements of the mass and lifetime of the Xi_b^- baryon using about 1800 Xi_b^- decays reconstructed in a proton-proton collision data set corresponding to an integ…

Measurement of the CKM angle γ using B±→DK± with D→KS0​π+π−, KS0​K+K− decays

Measurement of the ratio of the B0→D∗−τ+ντ​ and B0→D∗−μ+νμ​ branching fractions using three-prong τ-lepton decays

Observation of the doubly charmed baryon Ξcc++​

Observation of five new narrow Ωc0​ states decaying to Ξc+​K−

Study of J/ψ production in jets

Measurement of the ratio of branching fractions and difference in CP asymmetries of the decays B+→J/ψπ+ and B+→J/ψK+

First experimental study of photon polarization in radiative Bs0​ decays

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

Observation of ηc​(2S)→ppˉ​ and search for X(3872)→ppˉ​ decays

Measurement of the properties of the Ξb∗0​ baryon

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

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

A precise measurement of the B0 meson oscillation frequency

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

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

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

A model-independent confirmation of the Z(4430)− state

Search for hidden-sector bosons in B0→K∗0μ+μ− decays

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

Measurement of the ratio of branching fractions B(B0→D∗+τ−ντ​)/B(B0→D∗+μ−νμ​)

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

Observation of two new Ξb−​ baryon resonances

Measurement of the semileptonic CP asymmetry in B0−B0 mixing

Precision measurement of the mass and lifetime of the Xi_b^- baryon

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

Measurement of the ratio of the $B^{0} \to D^{-} τ^{+} ν_{τ}$ and $B^{0} \to D^{-} μ^{+} ν_{μ}$ branching fractions using three-prong $τ$ -lepton decays

Observation of the doubly charmed baryon $Ξ_{cc}^{++}$

Observation of five new narrow $Ω_{c}^{0}$ states decaying to $Ξ_{c}^{+} K^{-}$

Study of $J / ψ$ production in jets

Measurement of the ratio of branching fractions and difference in $C P$ asymmetries of the decays $B^{+} \to J / ψ π^{+}$ and $B^{+} \to J / ψ K^{+}$

First experimental study of photon polarization in radiative $B_{s}^{0}$ decays

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

Observation of $η_{c} (2 S) \to p p ˉ$ and search for $X (3872) \to p p ˉ$ decays

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

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

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

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

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

A model-independent confirmation of the $Z (4430)^{-}$ state

Search for hidden-sector bosons in $B^{0} \to K^{* 0} μ^{+} μ^{-}$ decays

Measurement of the ratio of branching fractions $B (B^{0} \to D^{+} τ^{-} ν_{τ}) / B (B^{0} \to D^{+} μ^{-} ν_{μ})$

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

Observation of two new $Ξ_{b}^{-}$ baryon resonances

Measurement of the semileptonic $C P$ asymmetry in $B^{0} - B^{0}$ mixing