Publications de Aurelio Bay | EPFL Graph Search

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An improved measurement of the decay B0s→μ+μ− and searches for the decays B0→μ+μ− and B0s→μ+μ−γ are performed at the LHCb experiment using data collected in proton-proton collisions at √s=7, 8 and 13 TeV, corresponding to integrated luminosities of 1, 2 an ...

The observation of the decay Xi(-)(b)-> J/psi Lambda K- is reported, using a data sample corresponding to an integrated luminosity of 3 fb(-1), collected by the LHCb detector in pp collisions at centre-of-mass energies of 7 and 8 TeV. The production rate o ...

Heavy quark production in 7 TeV centre-of-mass energy pp collisions at the LHC is not necessarily flavour symmetric. The production asymmetry, A(P), between D-s(+) and D-s(-) mesons is studied using the phi pi(+/-) decay mode in a data sample of 1.0 fb(-1) ...

A search for the Xi(++)(cc) baryon through the Xi(++)(cc) -> D(+)pK(-)pi(+) decay is performed with a data sample corresponding to an integrated luminosity of 1.7 fb(-1) recorded by the LHCb experiment in pp collisions at a centre-of-mass energy of 13 TeV. ...

A measurement of the cross-section for W -> e nu production in pp collisions is presented using data corresponding to an integrated luminosity of 2 fb(-1) collected by the LHCb experiment at a centre-of-mass energy of root s = 8 TeV. The electrons are requ ...

A search for CP violation in charmless three-body Xi(-)(b) -> pK(-)K(-) decays is performed using pp collision data recorded with the LHCb detector, corresponding to integrated luminosities of 1 fb(-1) at a center-of-mass energy root S = 7 TeV, 2 fb(-1) at ...

The branching fraction of the rare B-s(0) -> phi mu(+)mu(-) decay is measured using data collected by the LHCb experiment at center-of-mass energies of 7, 8, and 13 TeV, corresponding to integrated luminosities of 1, 2, and 6 fb(-1), respectively. The bran ...

The first observation of the Omega(-)(b) -> Xi(+)(c) K-pi(-) decay is reported using p p collision data at center of mass energies of 7, 8, and 13 TeV collected by the LHCb experiment, corresponding to an integrated luminosity of 9 fb(-1). Four excited Ome ...

The decays Lambda(0)(b) -> psi(2S)pK(-) and Lambda(0)(b) -> J/psi pi(+)pi(-)pK(-) are observed in a data sample corresponding to an integrated luminosity of 3 fb(-1), collected in proton-proton collisions at 7 and 8 TeV centre-of-mass energies by the LHCb ...

The decay mode B-s(0) -> (DsK +/-)-K--/+ allows for one of the theoretically cleanest measurements of the CKM angle gamma through the study of time-dependent CP violation. This paper reports a measurement of its branching fraction relative to the Cabibbo-f ...

A study of D+pi(-), D-0 pi(+) and D0+pi(-) final states is performed using pp collision data, corresponding to an integrated luminosity of 1.0 fb(-1), collected at a centre-of-mass energy of 7 TeV with the LHCb detector. The D-1(2420)(0) resonance is obser ...

The invariant-mass distribution for the coherent photoproduction of dipions in ultraperipheral PbPb collisions is measured using data, corresponding to an integrated luminosity of 224.6 ± 9.6μb − 1 , collected by the LHCb experiment in 2018 at a nucleon-nucleon centre-of-mass energy

\sqrt{{\textrm{s}}_{\textrm{NN}}}=5.02

TeV. In the mass range from 400 to 1200 MeV, the results are consistent with previous experiments, with the spectrum dominated by the ρ 0 meson, which interferes with a nonresonant comp

The ratio between the branching fractions of the B 0 → ρ (770) 0 γ and B 0 → K * (892) 0 γ decays is measured with proton-proton collision data collected by the LHCb experiment at centre-of-mass energies of 7, 8, and 13 TeV, corresponding to an integrated luminosity of 9 fb − 1 . The measured value is

\frac{\mathcal{B}\left({B}^0\to \rho {(770)}^0\gamma \right)}{\mathcal{B}\left({B}^0\to {K}^{\ast }{(892)}^0\gamma \right)}=0.0189\pm 0.0007\pm 0.0005,

B B 0 → ρ 770 0 γ B B 0 → K ∗ 892 0 γ = 0.0189 ± 0.00

Using samples of 102 x 10(6) Gamma(1S) and 158 x 10(6) Gamma(2S) events collected with the Belle detector, we study exclusive hadronic decays of these two bottomonium resonances to the three-body final states phi K+K-, omega pi(+)pi(-) and K*(0)(892)K-pi(+ ...

An angular analysis of the B-0 -> K-0 (-> K+pi(-))mu(+)mu(-) decay is presented using a dataset corresponding to an integrated luminosity of 4.7 fb(-1) of pp collision data collected with the LHCb experiment. The full set of CP-averaged observables are det ...

The first observation of the semileptonic b-baryon decay Lambda(0)(b) -> Lambda(+)(c) tau(-)(nu) over bar (tau) with a significance of 6.1 sigma, is reported using a data sample corresponding to 3 fb(-1) of integrated luminosity, collected by the LHCb expe ...

The ratio of branching fractions of the radiative B decays B-0 -> K*(0)gamma and B(0)s -> phi gamma has been measured using 0.37 fb(-1) of pp collisions at a center of mass energy of root s = 7 TeV, collected by the LHCb experiment. The value obtained is B ...

This paper presents a study of the charmless three-body decays

{B}_{(s)}^0\to {K}_{\mathrm{S}}^0{h}^{+}h{\prime}^{-}

(where h ( ′ ) = π, K ), using a sample of pp collision data collected by the LHCb experiment during Runs 1 and 2 of the LHC, corresponding to an integrated luminosity of 9 fb − 1 . The decay

{B}_s^0\to {K}_{\mathrm{S}}^0{K}^{+}{K}^{-}

is observed for the first time, and the following ratios of branching fractions are measured: $ {\displaystyle \begin{array}{l}\frac{\mathcal{B}\left({

A measurement of the branching fraction for the decay

\Lambda \to p{\mu}^{-}{\overline{\nu}}_{\mu }

is presented using pp collision data collected by the LHCb experiment at a centre-of-mass energy of 13 TeV. The analysis is based on data recorded between 2016 and 2018, corresponding to an integrated luminosity of 5.4 fb − 1 . The result is obtained using Λ → pμ − decays as a normalisation channel. The measured branching fraction is $ \mathcal{B}\left(\Lambda \to p{\mu}^{-}{\overline{\nu}}_{\mu}\right)=\

An angular analysis of the decay B-s(0) -> K*(0)(K) over bar*(0) is performed using pp collisions corresponding to an integrated luminosity of 1.0 fb(-1) collected by the LHCb experiment at a centre-of-mass energy root s = 7TeV. A combined angular and mass ...

Aurelio Bay

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Measurement of the B0s→μ+μ− decay properties and search for the B0→μ+μ− and B0s→μ+μ−γ decays

Observation of the Xi(-)(b) -> J/psi Lambda K- decay

Measurement of the D-s(+)-D-s(-) production asymmetry in 7 TeV pp collisions

A search for Xi(++)(cc) -> D(+)pK(-)pi(+) decays

Measurement of forward W -> e nu production in pp collisions at root s=8 TeV

Search for CP violation in Xi(-)(b) -> pK(-)K(-) decays

Branching Fraction Measurements of the Rare B-s(0) -> phi mu(+)mu(-) and B-s(0)-> f(2)' (1525)mu(+)mu(-) Decays

Observation of excited Omega(0)(c) baryons in Omega(-)(b) -> Xi(+)(c) K-pi(-) decays

Observation of Lambda(0)(b) -> psi (2S)pK(-) and Lambda(0)(b) -> J/psi pi(+)pi(-)pK(-) decays and a measurement of the A(b)(0) baryon mass

Measurements of the branching fractions of the decays B-s(0) -> (DsK +/-)-K--/+ and B-s(0) -> D-s(-)pi(+)

Study of D-J meson decays to D+pi(-), D-0 pi(+) and D*(+)pi(-) final states in pp collisions

Coherent photoproduction of ρ0, ω and excited vector mesons in ultraperipheral PbPb collisions

Measurement of the B0 → ρ(770)0γ branching fraction

Observation of exclusive Y(1S) and Y(2S) decays into light hadrons

Measurement of CP-Averaged Observables in the B-0 -> K-star 0 mu(+)mu(-) Decay

Observation of the Decay Lambda(0)(b) -> Lambda(+)(c) tau(-)(nu)over-bar(tau)

Measurement of the ratio of branching fractions B(B-0 -> K*(0)gamma)/B(B-s(0) -> phi gamma)

Improved branching-fraction measurements of $ {B}_{(s)}^0\to {K}_{\mathrm{S}}^0{h}^{+}h{\prime}^{-} $ decays and first observation of $ {B}_s^0\to {K}_{\mathrm{S}}^0{K}^{+}{K}^{-} $

Branching fraction measurement of the $ \Lambda \to p{\mu}^{-}{\overline{\nu}}_{\mu } $ decay

Measurement of CP asymmetries and polarisation fractions in B-s(0) -> K(0)(K)over-bar(0) decays