G. Cowan

activity

19972026

most citedAsymptotic formulae for likelihood-based tests of new physics

3.2k citations · 31.5k across the 404 of their papers we have counts for

collaborators

Showing 2017Show all

23 papers · 1 filter

hep-ex2017★ 19 cited

Amplitude analysis of the decay $B^{0} \to K_{S}^{0} π^{+} π^{-}$ and first observation of the CP asymmetry in $B^{0} \to K^{*} (892)^{-} π^{+}$

LHCb collaboration, R. Aaij, B. Adeva +794

The time-integrated Dalitz plot of the three-body hadronic charmless decay $B^{0} \to K_{S}^{0} π^{+} π^{-}$ is studied using a $pp$ collision data…

hep-ex2017★ 15 cited

Search for $B_{c}^{+}$ decays to two charm mesons

LHCb collaboration, R. Aaij, B. Adeva +791

A search for decays of $B_{c}^{+}$ mesons to two charm mesons is performed for the first time using data corresponding to an integrated luminosity of 3.0 fb $^{- 1}$ , collected by the LH…

physics.ins-det2017★ 5 cited

Application of machine learning techniques to lepton energy reconstruction in water Cherenkov detectors

E. Drakopoulou, G. A. Cowan, M. D. Needham +2

The application of machine learning techniques to the reconstruction of lepton energies in water Cherenkov detectors is discussed and illustrated for TITUS, a proposed intermediate…

hep-ex2017★ 42 cited

Search for the lepton-flavour violating decays $B_{(s)}^{0} \to e^{\pm} μ^{\mp}$

LHCb collaboration, R. Aaij, B. Adeva +799

A search for the lepton-flavour violating decays $B_{s}^{0} \to e^{\pm} μ^{\mp}$ and $B^{0} \to e^{\pm} μ^{\mp}$ is performed based on a sample of proton-proton collision data co…

hep-ex2017★ 206 cited

Search for dark photons produced in 13 TeV $pp$ collisions

LHCb collaboration, R. Aaij, B. Adeva +796

Searches are performed for both prompt-like and long-lived dark photons, $A^{'}$ , produced in proton-proton collisions at a center-of-mass energy of 13 TeV, using $A^{\prime}\…

hep-ex2017★ 14 cited

Measurement of $C P$ observables in $B^{\pm} \to D K^{*\pm}$ decays using two- and four-body $D$ final states

LHCb collaboration, R. Aaij, B. Adeva +799

Measurements of $C P$ observables in $B^{\pm} \to D K^{*\pm}$ decays are presented, where $D$ denotes a superposition of $D^{0}$ and $D^{0}$ meson states. Decays of t…

hep-ex2017

Measurement of $C P$ violation in $B^{0} \to J / ψ K_{S}^{0}$ and $B^{0} \to ψ (2 S) K_{S}^{0}$ decays

LHCb collaboration, R. Aaij, B. Adeva +797

A measurement is presented of decay-time-dependent $C P$ violation in the decays $B^{0} \to J / ψ K_{S}^{0}$ and $B^{0} \to ψ (2 S) K_{S}^{0}$ , where the $J / ψ$ is reco…

hep-ex2017★ 48 cited

Measurement of the shape of the $Λ_{b}^{0} \to Λ_{c}^{+} μ^{-} ν$ differential decay rate

LHCb collaboration, R. Aaij, B. Adeva +801

A measurement of the shape of the differential decay rate and the associated Isgur-Wise function for the decay $Λ_{b}^{0} \to Λ_{c}^{+} μ^{-} ν$ is reported, using data corresponding to…

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★ 14 cited

Study of $b b ˉ$ correlations in high energy proton-proton collisions

LHCb collaboration, R. Aaij, B. Adeva +802

Kinematic correlations for pairs of beauty hadrons, produced in high energy proton-proton collisions, are studied. The data sample used was collected with the LHCb experiment at ce…

hep-ex2017★ 13 cited

Search for baryon-number-violating $Ξ_{b}^{0}$ oscillations

LHCb collaboration, R. Aaij, B. Adeva +802

A search for baryon-number-violating $Ξ_{b}^{0}$ oscillations is performed with a sample of $pp$ collision data recorded by the LHCb experiment, corresponding to an integrated luminosi…

hep-ex2017★ 2 cited

Measurement of the $D^{*} (2010)^{+} - D^{+}$ mass difference

The BaBar Collaboration

We measure the mass difference, $Δ m_{+}$ , between the $D^{*} (2010)^{+}$ and the $D^{+}$ using the decay chain $D^{*} (2010)^{+} \to D^{+} π^{0}$ with $D^{+} \to K^{-} π^{+} π^{+}$ . The data were recorded w…

hep-ex2017★ 39 cited

Observation of $D^{0}$ meson decays to $π^{+} π^{-} μ^{+} μ^{-}$ and $K^{+} K^{-} μ^{+} μ^{-}$ final states

LHCb collaboration, R. Aaij, B. Adeva +801

The first observation of the $D^{0} \to π^{+} π^{-} μ^{+} μ^{-}$ and $D^{0} \to K^{+} K^{-} μ^{+} μ^{-}$ decays is reported using a sample of proton-proton collisions collected by LHCb at a center-of-mass e…

hep-ex2017★ 11 cited

Updated branching fraction measurements of $B_{(s)}^{0} \to K_{S}^{0} h^{+} h^{' -}$ decays

LHCb collaboration, R. Aaij, B. Adeva +776

The charmless three-body decays $B_{(s)}^{0} \to K_{S}^{0} h^{+} h^{' -}$ (where $h^{(')} = π, K$ ) are analysed using a sample of $pp$ collision dat…

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★ 59 cited

Updated search for long-lived particles decaying to jet pairs

LHCb collaboration, R. Aaij, B. Adeva +766

A search is presented for long-lived particles with a mass between 25 and 50 GeV/ $c^{2}$ and a lifetime between 2 and 500 ps, using proton-proton collision data corresponding to an i…

hep-ex2017★ 734 cited

Test of lepton universality with $B^{0} \to K^{* 0} ℓ^{+} ℓ^{-}$ decays

LHCb collaboration, R. Aaij, B. Adeva +785

A test of lepton universality, performed by measuring the ratio of the branching fractions of the $B^{0} \to K^{* 0} μ^{+} μ^{-}$ and $B^{0} \to K^{* 0} e^{+} e^{-}$ deca…

hep-ex2017★ 12 cited

Measurement of the $e^{+} e^{-} \to K_{S}^{0} K^{\pm} π^{\mp} π^{0}$ and $K_{S}^{0} K^{\pm} π^{\mp} η$ cross sections using initial-state radiation

The BABAR Collaboration

The processes $e^{+} e^{-} \to K_{S}^{0} K^{\pm} π^{\mp} π^{0}$ and $e^{+} e^{-} \to K_{S}^{0} K^{\pm} π^{\mp} η$ are studied over a continuum of energies from threshold…

hep-ex2017★ 42 cited

Observation of the decays $Λ_{b}^{0} \to χ_{c 1} p K^{-}$ and $Λ_{b}^{0} \to χ_{c 2} p K^{-}$

LHCb collaboration, R. Aaij, B. Adeva +776

The first observation of the decays $Λ_{b}^{0} \to χ_{c 1} p K^{-}$ and $Λ_{b}^{0} \to χ_{c 2} p K^{-}$ is reported using a data sample corresponding to an integrated luminosity of $3.0$ fb$^{-1…

hep-ex2017★ 11 cited

Dalitz plot analyses of $J / ψ \to π^{+} π^{-} π^{0}$ , $J / ψ \to K^{+} K^{-} π^{0}$ , and $J / ψ \to K_{S}^{0} K^{\pm} π^{\mp}$ produced via $e^{+} e^{-}$ annihilation with initial-state radiation

The BaBar Collaboration

We study the processes $e^{+} e^{-} \to γ_{ISR} J / ψ$ where $J / ψ \to π^{+} π^{-} π^{0}$ , $J / ψ \to K^{+} K^{-} π^{0}$ , and $J / ψ \to K_{S}^{0} K^{\pm} π^{\mp}$ using a data sample of 519 $f b^{- 1}$ rec…

hep-ex2017★ 40 cited

Measurement of $B^{0}$ , $B_{s}^{0}$ , $B^{+}$ and $Λ_{b}^{0}$ production asymmetries in 7 and 8 TeV proton-proton collisions

LHCb collaboration, R. Aaij, B. Adeva +763

The $B^{0}$ , $B_{s}^{0}$ , $B^{+}$ and $Λ_{b}^{0}$ hadron production asymmetries are measured using a data sample corresponding to an integrated luminosity of 3.0 fb $^{- 1}$ , collected by the LH…

hep-ex2017★ 25 cited

Observation of the $Ξ_{b}^{-} \to J / ψ Λ K^{-}$ decay

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

The observation of the decay $Ξ_{b}^{-} \to J / ψ Λ K^{-}$ is reported, using a data sample corresponding to an integrated luminosity of $3 fb^{- 1}$ , collected b…

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…

Amplitude analysis of the decay B0→KS0​π+π− and first observation of the CP asymmetry in B0→K∗(892)−π+

Search for Bc+​ decays to two charm mesons

Application of machine learning techniques to lepton energy reconstruction in water Cherenkov detectors

Search for the lepton-flavour violating decays B(s)0​→e±μ∓

Search for dark photons produced in 13 TeV pp collisions

Measurement of CP observables in B±→DK∗± decays using two- and four-body D final states

Measurement of CP violation in B0→J/ψKS0​ and B0→ψ(2S)KS0​ decays

Measurement of the shape of the Λb0​→Λc+​μ−ν differential decay rate

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

Study of bbˉ correlations in high energy proton-proton collisions

Search for baryon-number-violating Ξb0​ oscillations

Measurement of the D∗(2010)+−D+ mass difference

Observation of D0 meson decays to π+π−μ+μ− and K+K−μ+μ− final states

Updated branching fraction measurements of B(s)0​→KS0​h+h′− decays

Observation of the doubly charmed baryon Ξcc++​