J. Béquilleux

activity

20062009

most citedMeasurements of e+e- -> K+K-eta, K+K-pi0 and KsK+pi- Cross Sections Using Initial State Radiation Events

217 citations · 3.5k across the 71 of their papers we have counts for

collaborators

71 papers

hep-ex2009★ 41 cited

Measurements of the $τ$ Mass and Mass Difference of the $τ^{+}$ and $τ^{-}$ } at BaBar

The BaBar Collaboration, B. Aubert

We present the result from a precision measurement of the mass of the $τ$ lepton, $M_{τ}$ , based on $423 f b^{- 1}$ of data recorded at the $Υ (4 S)$ resonance with the BaBar detector. U…

hep-ex2009★ 21 cited

Measurement of branching fractions of B decays to K1(1270)pi and K1(1400)pi and determination of the CKM angle alpha from B0 --> a1(1260)+/- pi-/+

The BABAR Collaboration, B. Aubert

We report measurements of the branching fractions of neutral and charged B meson decays to final states containing a K_1(1270) or K_1(1400) meson and a charged pion. The data, coll…

hep-ex2009★ 48 cited

Measurement of D0-D0bar Mixing using the Ratio of Lifetimes for the Decays D0->K-pi+ and K+K-

The BABAR Collaboration, B. Aubert

We measure the rate of D0-D0bar mixing with the observable yCP=(tauKpi/tauKK)-1, where tauKK and tauKpi are respectively the mean lifetimes of CP-even D0->K+K- and CP-mixed D0->K-p…

hep-ex2009★ 112 cited

Study of $D_{s J}$ decays to $D^{*} K$ in inclusive $e^{+} e^{-}$ interactions

The BABAR Collaboration, B. Aubert

We observe the decays D^*_{s1}(2710)^+ \to D^*K $an d$ D^*_{sJ}(2860)^+ \to D^*K $an d m e a s u r e t h e i r b r an c hin g f r a c t i o n sr e l a t i v e t o t h e$ D K$ final state. We also observe, in the…

hep-ex2009★ 9 cited

Observation and Polarization Measurement of B0 --> a1(1260)+ a1(1260)- Decay

The BABAR Collaboration, B. Aubert

We present measurements of the branching fraction B and the longitudinal polarization fraction fL for B0 -> a1(1260)+ a1(1260)- decays, with a1(1260)+/- -> π- π+ π+/-. The data sam…

hep-ex2009★ 24 cited

B meson decays to charmless meson pairs containing eta or eta' mesons

The BABAR Collaboration, B. Aubert

We present updated measurements of the branching fractions for B0 meson decays to etaK0, etaeta, etaphi, etaomega, eta'K0, eta'eta', eta'phi, and eta'omega, and branching fractions…

hep-ex2009★ 199 cited

Search for Dimuon Decays of a Light Scalar Boson in Radiative Transitions Upsilon -> gamma A0

The BABAR Collaboration, B. Aubert

We search for evidence of a light scalar boson in the radiative decays of the Upsilon(2S) and Upsilon(3S) resonances: Upsilon(2S,3S)-> gamma A0, A0 -> mu^+ mu^-. Such a particle ap…

hep-ex2009★ 63 cited

Time-dependent amplitude analysis of B0 --> K0S pi+ pi-

The BABAR Collaboration, B. Aubert

We perform a time-dependent amplitude analysis of $B^{0} \to K_{S}^{0} π^{+} π^{-}$ decays to extract the CP violation parameters of $f_{0} (980) K_{S}^{0}$ and $ρ^{0} (770) K_{S}^{0}$ and the direct CP asy…

hep-ex2009

Search for B^0 Meson Decays to π^0 K^0_SK^0_S, ηK^0_S K^0_S, and η^{\prime}K^0_SK^0_S

The BABAR Collaboration, B. Aubert

We describe searches for $B^{0}$ meson decays to the charmless final states $π^{0} K_{S}^{0} K_{S}^{0}$ , $η K_{S}^{0} K_{S}^{0}$ , and $η^{'} K_{S}^{0} K_{S}^{0}$ . The data sample corresponds to $467 \times 1…

hep-ex2009★ 20 cited

Search for b-> u transitions in B0 -> D0 K*0 decays

The BABAR Collaboration, B. Aubert

We present a study of the decays B0 -> D0 K*0 and B0 -> barD0 K*0 with K*0 -> K+pi-. The D0 and the barD0 mesons are reconstructed in the final states f=K+pi-, K+pi-pi0, K+pi-pi+pi…

hep-ex2009

Exclusive Initial-State-Radiation Production of the $D D ˉ$ , $D D ˉ^{}$ , and $D^{} D ˉ^{*}$ , Systems

The BABAR Collaboration, B. Aubert

We perform a study of the exclusive production of $D D ˉ$ , $D D ˉ^{*}$ , and $D^{*} D ˉ^{*}$ in initial-state-radiation events, from $e^{+} e^{-}$ annihilations at a center-of-mass e…

hep-ex2009★ 21 cited

Search for the Rare Leptonic Decays \boldmath{\Blnu} ( $ℓ = e, μ$ )

The BABAR Collaboration, B. Aubert

We have performed a search for the rare leptonic decays \Bp \to \ellp \nul ( $l = e, μ$ ), using data collected at the \FourS resonance by the \babar\ detector at the \pep2 storage ring…

hep-ex2009★ 80 cited

Dalitz Plot Analysis of B+- --> pi+-pi+-pi-+ Decays

The BABAR Collaboration, B. Aubert

We present a Dalitz plot analysis of charmless B+- decays to the final state pi+-pi+-pi-+ using a sample of (465+-5)x10^-6 BBbar pairs collected by the BABAR experiment at \sqrt{s}…

hep-ex2009★ 24 cited

Observation of B Meson Decays to omegaK* and Improved Measurements for omegarho and omega f_0

The BABAR Collaboration, B. Aubert

We present measurements of B meson decays to the final states omegaK*, omegarho, and omega f_0, where K* indicates a spin 0, 1, or 2 strange meson. The data sample corresponds to 4…

hep-ex2009★ 29 cited

Improved Measurement of $B^{+} \to ρ^{+} ρ^{0}$ and Determination of the Quark-Mixing Phase Angle $α$

B. Aubert

We present improved measurements of the branching fraction $B$ , the longitudinal polarization fraction $f_{L}$ , and the direct {\ensuremath{CP}\xspace} asymmetry {\ensuremath{…

hep-ex2009★ 68 cited

Dalitz Plot Analysis of B- -> D+ pi- pi-

The BABAR Collaboration, B. Aubert

We report on a Dalitz plot analysis of B- -> D+ pi- pi- decays, based on a sample of about 383 million Upsilon(4S) -> BBbar decays collected with the BaBar detector at the PEP-II a…

hep-ex2008★ 171 cited

Search for the Z(4430)^- at BABAR

The BABAR Collaboration, B. Aubert

We report the results of a search for $Z (4430)^{-}$ decay to $J / ψ π^{-}$ or $ψ (2 S) π^{-}$ in $B^{-,0}\to \jpsiπ^- K^{0,+}$ and $B^{-,0}\to \psitwos π^- K^{0,+}$ decays. The data were colle…

hep-ex2008

Time-dependent and time-integrated angular analysis of $B \to ϕ K_{S}^{0} π^{0}$ and $ϕ K^{\pm} π^{\mp}$

The BABAR Collaboration, B. Aubert

We perform a time-dependent and time-integrated angular analysis of the decays $B^{0} \to ϕ K^{*} (892)^{0}$ , $ϕ K_{2}^{*} (1430)^{0}$ , and $ϕ (K π)_{0}^{* 0}$ with the final sample of about 465 mi…

hep-ex2008★ 95 cited

Measurement of the e+e- --> b anti-b cross section between sqrt(S)=10.54 and 11.20 GeV

The BABAR Collaboration, B. Aubert

We report e+e- --> b anti-b cross section measurements by the BABAR experiment performed during an energy scan in the range of 10.54 to 11.20 GeV at the PEP-II e+e- collider. A tot…

hep-ex2008★ 70 cited

Measurements of the Semileptonic Decays $\Bb\to D\ell\nub$ and $\Bb\to D^*\ell\nub$ Using a Global Fit to $D X\ell\nub$ Final States

The BABAR Collaboration, B. Aubert

Semileptonic $B ˉ$ decays to $D X ℓ ν ˉ$ ( $ℓ = e$ or $m u$ ) are selected by reconstructing $D 0 ℓ$ and $D^{+} ℓ$ combinations from a sample of 230 million $Υ(4S) \to B\bar{B…

hep-ex2008★ 197 cited

Evidence for X(3872) --> psi(2S) gamma in B+/- --> X(3872) K+/- decays, and a study of B --> ccbar gamma K

The BABAR Collaboration, B. Aubert

In a search for B --> ccbar gamma K decays with the BaBar detector, where ccbar includes J/psi and psi(2S), and K includes K+, Ks, and K*(892), we find evidence for X(3872) --> J/p…

hep-ex2008★ 11 cited

Observation of B0 -> chi_c0K0 and evidence for B+ -> chi_c0K+

The BABAR Collaboration, B. Aubert

We present the observation of the decay B0 -> chi_c0K*0 as well as evidence of B+ -> chi_c0K*+, with an 8.9 and a 3.6 standard deviation significance, respectively, using a data sa…

hep-ex2008★ 18 cited

Search for the highly suppressed decays B- -> K+ pi- pi- and B- -> K- K- pi+

The BABAR Collaboration, B. Aubert

We report a search for the decays B- -> K+ pi- pi- and B- -> K- K- pi+, which are highly suppressed in the Standard Model. Using a sample of (467 +/- 5) x 10^6 BBbar pairs collecte…

hep-ex2008

Search for Second-Class Currents in tau- -> omega pi- nu_tau

The BABAR Collaboration, B. Aubert

We report on an analysis of $τ^{-}$ decaying into $ω π^{-} ν_{τ}$ with $ω \to π^{+} π^{-} π^{0}$ using data containing nearly 320 million tau pairs collected with the BABAR detector at the PEP-II as…

Measurements of the τ Mass and Mass Difference of the τ+ and τ−} at BaBar

Measurement of branching fractions of B decays to K1(1270)pi and K1(1400)pi and determination of the CKM angle alpha from B0 --> a1(1260)+/- pi-/+

Measurement of D0-D0bar Mixing using the Ratio of Lifetimes for the Decays D0->K-pi+ and K+K-

Study of DsJ​ decays to D∗K in inclusive e+e− interactions

Observation and Polarization Measurement of B0 --> a1(1260)+ a1(1260)- Decay

B meson decays to charmless meson pairs containing eta or eta' mesons

Search for Dimuon Decays of a Light Scalar Boson in Radiative Transitions Upsilon -> gamma A0

Time-dependent amplitude analysis of B0 --> K0S pi+ pi-

Search for B^0 Meson Decays to π^0 K^0_SK^0_S, ηK^0_S K^0_S, and η^{\prime}K^0_SK^0_S

Search for b-> u transitions in B0 -> D0 K*0 decays

Exclusive Initial-State-Radiation Production of the DDˉ, DDˉ∗, and D∗Dˉ∗, Systems

Search for the Rare Leptonic Decays \boldmath{\Blnu} (ℓ=e,μ)

Dalitz Plot Analysis of B+- --> pi+-pi+-pi-+ Decays

Observation of B Meson Decays to omegaK* and Improved Measurements for omegarho and omega f_0

Improved Measurement of B+→ρ+ρ0 and Determination of the Quark-Mixing Phase Angle α

Dalitz Plot Analysis of B- -> D+ pi- pi-

Search for the Z(4430)^- at BABAR

Time-dependent and time-integrated angular analysis of B→ϕKS0​π0 and ϕK±π∓

Measurement of the e+e- --> b anti-b cross section between sqrt(S)=10.54 and 11.20 GeV

Measurements of the Semileptonic Decays $\Bb\to D\ell\nub$ and $\Bb\to D^*\ell\nub$ Using a Global Fit to $D X\ell\nub$ Final States

Evidence for X(3872) --> psi(2S) gamma in B+/- --> X(3872) K+/- decays, and a study of B --> ccbar gamma K

Observation of B0 -> chi_c0K*0 and evidence for B+ -> chi_c0K*+

Search for the highly suppressed decays B- -> K+ pi- pi- and B- -> K- K- pi+

Search for Second-Class Currents in tau- -> omega pi- nu_tau

Measurements of the $τ$ Mass and Mass Difference of the $τ^{+}$ and $τ^{-}$ } at BaBar

Study of $D_{s J}$ decays to $D^{*} K$ in inclusive $e^{+} e^{-}$ interactions

Exclusive Initial-State-Radiation Production of the $D D ˉ$ , $D D ˉ^{}$ , and $D^{} D ˉ^{*}$ , Systems

Search for the Rare Leptonic Decays \boldmath{\Blnu} ( $ℓ = e, μ$ )

Improved Measurement of $B^{+} \to ρ^{+} ρ^{0}$ and Determination of the Quark-Mixing Phase Angle $α$

Time-dependent and time-integrated angular analysis of $B \to ϕ K_{S}^{0} π^{0}$ and $ϕ K^{\pm} π^{\mp}$

Observation of B0 -> chi_c0K0 and evidence for B+ -> chi_c0K+