B. Lewandowski

activity

20002020

most citedObservation of a Broad Structure in the

π^{+} π^{-} J / ψ

Mass Spectrum around 4.26 GeV/

c^{2}

744 citations · 7.2k across the 118 of their papers we have counts for

collaborators

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114 papers · 1 filter

hep-ex2009★ 63 cited

A Search for Invisible Decays of the Upsilon(1S)

The BABAR Collaboration, B. Aubert

We search for invisible decays of the Upsilon(1S) meson using a sample of 91.4 x 10^{6} Upsilon(3S) mesons collected at the BaBar/PEP-II B-factory. We select events containing the…

hep-ex2009★ 263 cited

Physics Performance Report for PANDA: Strong Interaction Studies with Antiprotons

PANDA Collaboration, W. Erni, I. Keshelashvili +411

To study fundamental questions of hadron and nuclear physics in interactions of antiprotons with nucleons and nuclei, the universal PANDA detector will be built. Gluonic excitation…

hep-ex2007★ 8 cited

Search for b--> u transitions in B- -> [K+pi-pi0]_D K-

The BABAR Collaboration, B. Aubert

We search for decays of a B meson into a neutral D meson and a kaon, with the D meson decaying into K+pi-pi0. This final state can be reached through the b --> c transition B- -> D…

hep-ex2007★ 40 cited

Evidence for the B0->ppbarK0 and B+->eta_cK+ decays and Study of the Decay Dynamics of B Meson Decays into ppbarh Final States

The BABAR Collaboration, B. Aubert

With a sample of 232x10^6 Upsilon(4S)->BBbar events collected with the BaBar detector, we study the decays of B mesons to ppbarh final states, where h=pi+,Ks,K*0 or K*+. We report…

hep-ex2007★ 5 cited

Search for Prompt Production of $χ_{c}$ and X(3872) in e^+e^- Annihilations

The BABAR Collaboration, B. Aubert

We have searched for prompt production of $χ_{c 1}$ , $χ_{c 2}$ and X(3872) in continuum e^+e^- annihilations using a 386 fb^{-1} data sample collected around $s = 10.6$ GeV wi…

hep-ex2007★ 10 cited

Search for the Decays B0->e+e-gamma and B0->mu+mu-gamma

The BABAR Collaboration, B. Aubert

We present results of a search for the decays $B^{0} \to ℓ^{+} ℓ^{-} γ$ ( $ℓ = e$ , $μ$ ). The search is performed using $320 \times 1 0^{6}$ $B B ˉ$ pairs collected at the $Υ (4 S)$ re…

hep-ex2007★ 17 cited

Search for B0->phiK+pi- Decays with Large K+pi- Invariant Mass

The BABAR Collaboration, B. Aubert

Motivated by the polarization anomaly in the B->phi(1020)K*(892) decay, we extend our search for other K* final states in the decay B0->phi(1020)K^*0 with the K*0->K+pi- invariant…

hep-ex2007★ 61 cited

Determination of the Form Factors for the Decay B0 -> D*- l+ nu_l and of the CKM Matrix Element |V_cb|

The BABAR Collaboration, B. Aubert

We present a combined measurement of the Cabibbo-Kobayashi-Maskawa matrix element |V_{cb}| and of the parameters rho^2, R_1(1), and R_2(1), which fully characterize the form factor…

hep-ex2007★ 18 cited

Branching fraction and charge asymmetry measurements in B to J/psi pi pi decays

The BABAR collaboration, B. Aubert

We study the decays B0 to J/psi pi+pi- and B+ to J/psi pi+pi0, including intermediate resonances, using a sample of 382 million BBbar pairs recorded by the BaBar detector at the PE…

hep-ex2007★ 41 cited

Amplitude Analysis of the decay D^0 --> K^- K^+ pi^0

BABAR Collaboration, B. Aubert

Using 385 fb^-1 of e^+e^- collisions at the CM energies of around 10.6 GeV recorded by the BaBar experiment, we study the amplitudes of the singly Cabibbo-suppressed decay D^0 -->…

hep-ex2007★ 129 cited

The $e^{+} e^{-} \to K^{+} K^{-} π^{+} π^{-}$ , $K^{+} K^{-} π^{0} π^{0}$ and $K^{+} K^{-} K^{+} K^{-}$ Cross Sections Measured with Initial-State Radiation

The BABAR Collaboration, B. Aubert

We study the processes $e^{+} e^{-} \to K^{+} K^{-} π^{+} π^{-} γ$ , $K^{+} K^{-} π^{0} π^{0} γ$ and $K^{+} K^{-} K^{+} K^{-} γ$ , where the photon is radiated from the initial state. About 34600, 4400 and 2300 fully r…

hep-ex2007★ 46 cited

Measurement of ${CP}\xspace$ Violation Parameters with a Dalitz Plot Analysis of $B^{\pm} \to D_{π^{+} π^{-} π^{0}} K^{\pm}$

The BaBar Collaboration, B. Aubert

We report the results of a CP violation analysis of the decay B+/- --> D(pipipi0)K+/-, where D(pipipi0) indicates a neutral D meson detected in the final state pi+pi-pi0, excluding…

hep-ex2007

Measurements of CP-Violating Asymmetries in B0 to a1(1260)^{+-} pi^{-+} Decays

F. Palombo

We present measurements of CP-violating asymmetries in the decay B0 -> a_1(1260)^{+-} pi^{-+} with a_1(1260)^{+-} -> pi^{-+} pi^{+-} pi^{+-}. The data sample corresponds to 384 mil…

hep-ex2007★ 34 cited

Improved Measurement of CP Violation in Neutral B Decays to c cbar s

The BABAR Collaboration, B. aubert

We present updated measurements of time-dependent CP asymmetries in fully-reconstructed neutral B decays to several CP eigenstates containing a charmonium meson. The measurements u…

hep-ex2007★ 65 cited

Observation of CP Violation in B0 -> K+pi- and B0 -> pi+pi-

B. Aubert

We report observations of CP violation in the decays B0 -> K+pi- and B0 -> pi+pi- in a sample of 383 million Y(4S) -> BBbar events. We find 4372 +/- 82 B0 -> K+pi- decays and measu…

hep-ex2007★ 12 cited

Measurement of CP Asymmetry in B0 to Ks pi0 pi0 Decays

The BABAR Collaboration, B. Aubert

We present a measurement of the time-dependent CP asymmetry for the neutral B-meson decay into the CP = +1 final state Ks pi0 pi0, with Ks -> pi+ pi-. We use a sample of approximat…

hep-ex2007★ 11 cited

Observation of $B^{+} \to ρ^{+} K^{0}$ and Measurement of its Branching Fraction and Charge Asymmetry

B. Aubert, BaBar Collaboration

We present the first observation of the decay $B^{+} \to ρ^{+} K^{0}$ , using a data sample of 348 fb $^{- 1}$ collected at the $Υ (4 S)$ resonance with the \babar detector.The branching fractio…

hep-ex2007★ 32 cited

Measurements of CP-Violating Asymmetries in B0 to a1(1260)^{+-} pi^{-+} Decays

The BABAR Collaboration, B. Aubert

We present measurements of CP-violating asymmetries in the decay B0 -> a_1(1260)^{+-} pi^{-+} with a_1(1260)^{+-} -> pi^{-+} pi^{+-} pi^{+-}. The data sample corresponds to 384 mil…

hep-ex2006★ 13 cited

Observation of the Exclusive Reaction e+e- -> phi eta at sqrt{s}=10.58 GeV

The BABAR Collaboration, B. Aubert

We report the observation of $\e^+e^-\to ϕη$ near $s$ = 10.58 GeV with 6.5 $σ$ significance in the $K^{+} K^{-} γ γ$ final state in a data sample of 224 $f b^{- 1}$ collected by the…

hep-ex2006★ 6 cited

Evidence for the Rare Decay B+ --> Ds+ pi0

The BABAR Collaboration, B. Aubert

We have searched for the rare decay B+ --> Ds+ pi0. The analysis is based on a sample of 232 million Upsilon(4S) --> B anti-B decays collected with the BABAR detector at the PEP-II…

hep-ex2006★ 289 cited

Evidence of a Broad Structure at an Invariant Mass of 4.32 GeV/ $c^{2}$ in the Reaction $e^{+} e^{-} \to π^{+} π^{-} ψ (2 S)$ Measured at BaBar

The BABAR Collaboration, B. Aubert

We present a measurement of the cross section of the process $e^{+} e^{-} \to π^{+} p i^{-} ψ (2 S)$ from threshold up to 8 GeV center-of-mass energy using events containing initial-state radiatio…

hep-ex2006★ 17 cited

Branching fraction measurement of B0 --> D()- pi+, B- --> D()0 pi- and isospin analysis of B --> D(*) pi decays

The BABAR Collaboration, B. Aubert

Using 65 million $Υ (4 S) \to B B ˉ$ events collected with the BABAR detector at the PEP-II $e^{+} e^{-}$ storage ring at the Stanford Linear Accelerator Center, we measure the colo…

hep-ex2006★ 25 cited

Inclusive Lambda_c Production in e^+e^- Annihilations at sqrt{s}=10.54 GeV and in Upsilon(4S) Decays

The BABAR Collaboration, B. Aubert

We present measurements of the total production rates and momentum distributions of the charmed baryon $Λ_{c}^{+}$ in $e^{+} e^{-} \to$ hadrons at a center-of-mass energy of 10.54 GeV and i…

hep-ex2006★ 6 cited

Measurement of the CP Asymmetry and Branching Fraction of B^0 to rho^0 K^0

The BABAR Collaboration, B. Aubert

We present a measurement of the branching fraction and time-dependent CP asymmetry of B^0 to rho^0 K^0. The results are obtained from a data sample of 227 10^6 Y4S to BB_ decays co…

A Search for Invisible Decays of the Upsilon(1S)

Physics Performance Report for PANDA: Strong Interaction Studies with Antiprotons

Search for b--> u transitions in B- -> [K+pi-pi0]_D K-

Evidence for the B0->ppbarK*0 and B+->eta_cK*+ decays and Study of the Decay Dynamics of B Meson Decays into ppbarh Final States

Search for Prompt Production of χc​ and X(3872) in e^+e^- Annihilations

Search for the Decays B0->e+e-gamma and B0->mu+mu-gamma

Search for B0->phiK+pi- Decays with Large K+pi- Invariant Mass

Determination of the Form Factors for the Decay B0 -> D*- l+ nu_l and of the CKM Matrix Element |V_cb|

Branching fraction and charge asymmetry measurements in B to J/psi pi pi decays

Amplitude Analysis of the decay D^0 --> K^- K^+ pi^0

The e+e−→K+K−π+π−, K+K−π0π0 and K+K−K+K− Cross Sections Measured with Initial-State Radiation

Measurement of ${CP}\xspace$ Violation Parameters with a Dalitz Plot Analysis of B±→Dπ+π−π0​K±

Measurements of CP-Violating Asymmetries in B0 to a1(1260)^{+-} pi^{-+} Decays

Improved Measurement of CP Violation in Neutral B Decays to c cbar s

Observation of CP Violation in B0 -> K+pi- and B0 -> pi+pi-

Measurement of CP Asymmetry in B0 to Ks pi0 pi0 Decays

Observation of B+→ρ+K0 and Measurement of its Branching Fraction and Charge Asymmetry

Measurements of CP-Violating Asymmetries in B0 to a1(1260)^{+-} pi^{-+} Decays

Observation of the Exclusive Reaction e+e- -> phi eta at sqrt{s}=10.58 GeV

Evidence for the Rare Decay B+ --> Ds+ pi0

Evidence of a Broad Structure at an Invariant Mass of 4.32 GeV/c2 in the Reaction e+e−→π+π−ψ(2S) Measured at BaBar

Branching fraction measurement of B0 --> D(*)- pi+, B- --> D(*)0 pi- and isospin analysis of B --> D(*) pi decays

Inclusive Lambda_c Production in e^+e^- Annihilations at sqrt{s}=10.54 GeV and in Upsilon(4S) Decays

Measurement of the CP Asymmetry and Branching Fraction of B^0 to rho^0 K^0

Evidence for the B0->ppbarK0 and B+->eta_cK+ decays and Study of the Decay Dynamics of B Meson Decays into ppbarh Final States

Search for Prompt Production of $χ_{c}$ and X(3872) in e^+e^- Annihilations

The $e^{+} e^{-} \to K^{+} K^{-} π^{+} π^{-}$ , $K^{+} K^{-} π^{0} π^{0}$ and $K^{+} K^{-} K^{+} K^{-}$ Cross Sections Measured with Initial-State Radiation

Measurement of ${CP}\xspace$ Violation Parameters with a Dalitz Plot Analysis of $B^{\pm} \to D_{π^{+} π^{-} π^{0}} K^{\pm}$

Observation of $B^{+} \to ρ^{+} K^{0}$ and Measurement of its Branching Fraction and Charge Asymmetry

Evidence of a Broad Structure at an Invariant Mass of 4.32 GeV/ $c^{2}$ in the Reaction $e^{+} e^{-} \to π^{+} π^{-} ψ (2 S)$ Measured at BaBar

Branching fraction measurement of B0 --> D()- pi+, B- --> D()0 pi- and isospin analysis of B --> D(*) pi decays