J. Ernst

activity

19942020

most citedSearches for Lepton Flavor Violation in the Decays tau -> e gamma and tau -> mu gamma

635 citations · 3.5k across the 63 of their papers we have counts for

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52 papers · 1 filter

hep-ex2020★ 6 cited

Precision measurement of the $B (Υ (3 S) \to τ^{+} τ^{-}) / B (Υ (3 S) \to μ^{+} μ^{-})$ ratio

J. P. Lees, V. Poireau, V. Tisserand +238

We report on a precision measurement of the ratio $R_{τ μ}^{Υ (3 S)} = B (Υ (3 S) \to τ^{+} τ^{-}) / B (Υ (3 S) \to μ^{+} μ^{-})$ using data collected with the BaBar detector at the SL…

hep-ex2015★ 55 cited

Search for Long-Lived Particles in $e^{+} e^{-}$ Collisions

J. P. Lees, others

We present a search for a neutral, long-lived particle $L$ that is produced in $e^{+} e^{-}$ collisions and decays at a significant distance from the $e^{+} e^{-}$ interaction point into var…

hep-ex2013★ 168 cited

Study of e+e- --> p anti-p via initial-state radiation at BABAR

The BABAR Collaboration

The process e+e- --> p anti-p gamma is studied using 469 fb-1 of integrated luminosity collected with the BABAR detector at the PEP-II collider, at an e+e- center-of-mass energy of…

hep-ex2012★ 17 cited

Search for direct CP-violation in singly-Cabibbo suppressed D+- --> K+ K- pi+- decays

BaBar Collaboration, J. P. Lees, V. Poireau +359

We report on a search for direct CP asymmetry in the singly Cabibbo-suppressed decay D+- --> K+ K- pi+- using a data sample of 476 fb-1 accumulated with the BaBar detector running…

hep-ex2011★ 4 cited

Observation of the baryonic B decay B0bar --> Lambda_c^+ anti-Lambda K-

The BABAR Collaboration, J. P. Lees, V. Poireau +384

We report the observation of the baryonic B decay B0bar --> Lambda_c^+ anti-Lambda K- with a significance larger than 7 standard deviations based on 471x10^6$ BBbar pairs collected…

hep-ex2009★ 635 cited

Searches for Lepton Flavor Violation in the Decays tau -> e gamma and tau -> mu gamma

The BABAR Collaboration, B. Aubert

Searches for lepton-flavor-violating decay of a tau lepton to a lighter mass lepton and a photon have been performed with the entire dataset of (963 +- 7) x 10^6 tau decays collect…

hep-ex2009★ 25 cited

Measurement of $B \to D_{s}^{(*)} K π$ branching fractions

The Belle Collaboration, J. Wiechczynski, T. Lesiak

We report a measurement of the exclusive $B^{+}$ meson decay to the $D_{s}^{(*) -} K^{+} π^{+}$ final state using $657 \times 1 0^{6} B B$ pairs collected at the $Υ (4 S)$ resonance w…

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★ 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

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…

hep-ex2008★ 47 cited

Measurement of D0-D0bar mixing from a time-dependent amplitude analysis of D0 -> K+ pi- pi0 decays

The BABAR Collaboration, B Aubert

We present evidence of $D^{0}$ - $D^{0} ˉ$ mixing using a time-dependent amplitude analysis of the decay D0->K+pi-pi0 in a data sample of 384 fb^-1 collected with the BaBar detector…

hep-ex2008★ 88 cited

Direct CP, Lepton Flavor and Isospin Asymmetries in the Decays B->K(*)l+l-

The BABAR Collaboration, B. Aubert

We measure rate asymmetries for the rare decays B->K(*)l+l-, where l+l- is either e+e- or mu+mu-, using a sample of 384 million BBbar events collected with the Babar detector at th…

hep-ex2008★ 14 cited

Searches for B meson decays to phiphi, phirho, phifzero(980), and fzero(980)fzero(980) final states

The BaBar Collaboration, B. Aubert

We present the results of searches for B decays to charmless final states involving phi, fzero(980), and charged or neutral rho mesons. The data sample corresponds to 384 million B…

hep-ex2008★ 28 cited

Measurements of B --> {pi, eta, eta'} l nu Branching Fractions and Determination of |Vub| with Semileptonically Tagged B Mesons

The BABAR Collaboration, B. Aubert

We report measurements of branching fractions for the decays B --> P l nu, where P are the pseudoscalar charmless mesons pi-, pi0, eta and eta', based on 348 fb-1 of data collected…

hep-ex2007★ 54 cited

Measurement of the Decay Constant $f_{D}_{S}^{+}$ using $D_S^+ --> ell^+ nu

CLEO Collaboration, M. Artuso

We measure the decay constant fDs using the Ds -> l+ nu channel, where the l+ designates either a mu+ or a tau+, when the tau+ -> pi+ nu. Using both measurements we find fDs = 274…

hep-ex2006

Measurement of the Relative Branching Fractions for B- -> D/D*/D**(D(*)pi) l- anti-nu with a Large Sample of Tagged B Mesons

The BABAR Collaboration, B. Aubert

We present a study of B semileptonic decays into charm final states based on 211.7 fb^{-1} of data collected at the Υ(4S) resonance with the babar detector at the pep2 e^+e^- stora…

hep-ex2006★ 25 cited

First Observation of Upsilon(3S) --> tau tau and Tests of Lepton Universality in Upsilon Decays

D. Besson, CLEO Collaboration

Using data collected with the CLEO-III detector at the CESR e+e- collider, we report on a first observation of the decay of the Upsilon(3S) to tau tau, and precisely measure the ra…

hep-ex2006

Precision Measurements of the Timelike Electromagnetic Form Factors of the Pion, Kaon, and Proton

P. Zweber

Using 20.7 pb^-1 of e+e- annihilation data taken at sqrt{s} = 3.671 GeV with the CLEO-c detector, precision measurements of the electromagnetic form factors of the charged pion, ch…

hep-ex2006★ 246 cited

Charmonium Decays of $Y(4260), psi(4160), and psi(4040)

T. E. Coan

Using data collected with the CLEO detector operating at the CESR e+e- collider at sqrt s = 3.97-4.26 GeV, we investigate 15 charmonium decay modes of the psi(4040), psi(4160), and…

hep-ex2005★ 30 cited

New Measurements of Cabibbo-Suppressed Decays of D Mesons in CLEO-c

P. Rubin, CLEO Collaboration

Using 281 pb^-1 of data collected with the CLEO-c detector, we report on first observations and new measurements of Cabibbo-suppressed decays of D mesons to 2, 3, 4, and 5 pions. B…

hep-ex2005★ 10 cited

Two Photon Width of chi_{c2}

S. Dobbs

The two-photon width of chi_c2 (^3P_2) state of charmonium has been measured using 14.4 fb^-1 of e+e- data taken at sqrt{s} = 9.46-11.30 GeV with the CLEO III detector. The two-pho…

hep-ex2005★ 28 cited

Search for Exclusive Multi-Body Non-DbarD Decays at the psi(3770)

G. S. Huang, CLEO Collaboration

Using data collected at the psi(3770) resonance with the CLEO-c detector at the Cornell e^+e^- storage ring, we present searches for 25 charmless decay modes of the psi(3770), most…

Precision measurement of the B(Υ(3S)→τ+τ−)/B(Υ(3S)→μ+μ−) ratio

Search for Long-Lived Particles in e+e− Collisions

Study of e+e- --> p anti-p via initial-state radiation at BABAR

Search for direct CP-violation in singly-Cabibbo suppressed D+- --> K+ K- pi+- decays

Observation of the baryonic B decay B0bar --> Lambda_c^+ anti-Lambda K-

Searches for Lepton Flavor Violation in the Decays tau -> e gamma and tau -> mu gamma

Measurement of B→Ds(∗)​Kπ branching fractions

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

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

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

Measurement of D0-D0bar mixing from a time-dependent amplitude analysis of D0 -> K+ pi- pi0 decays

Direct CP, Lepton Flavor and Isospin Asymmetries in the Decays B->K(*)l+l-

Searches for B meson decays to phiphi, phirho, phifzero(980), and fzero(980)fzero(980) final states

Measurements of B --> {pi, eta, eta'} l nu Branching Fractions and Determination of |Vub| with Semileptonically Tagged B Mesons

Measurement of the Decay Constant fD​S+​ using $D_S^+ --> ell^+ nu

Measurement of the Relative Branching Fractions for B- -> D/D*/D**(D(*)pi) l- anti-nu with a Large Sample of Tagged B Mesons

First Observation of Upsilon(3S) --> tau tau and Tests of Lepton Universality in Upsilon Decays

Precision Measurements of the Timelike Electromagnetic Form Factors of the Pion, Kaon, and Proton

Charmonium Decays of $Y(4260), psi(4160), and psi(4040)

New Measurements of Cabibbo-Suppressed Decays of D Mesons in CLEO-c

Two Photon Width of chi_{c2}

Search for Exclusive Multi-Body Non-DbarD Decays at the psi(3770)

Precision measurement of the $B (Υ (3 S) \to τ^{+} τ^{-}) / B (Υ (3 S) \to μ^{+} μ^{-})$ ratio

Search for Long-Lived Particles in $e^{+} e^{-}$ Collisions

Measurement of $B \to D_{s}^{(*)} K π$ branching fractions

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

Measurement of the Decay Constant $f_{D}_{S}^{+}$ using $D_S^+ --> ell^+ nu