J. J. O’Neill

activity

19941998

most citedSearch for Exclusive Charmless Hadronic B Decays

121 citations · 762 across the 23 of their papers we have counts for

collaborators

23 papers

hep-ex1998★ 18 cited

First Observation of the Decay $τ^{-} \to K^{*-} η ν_{τ}$

M. Bishai

Using data recorded by the CLEO-II detector at CESR, we report the first measurement of the branching fraction for the decay of $τ^{-}$ into $K^{*-} η ν_{τ}$ . The measured branching frac…

hep-ex1998★ 17 cited

First Observation of $Υ (1 S) \to γ π π$

A. Anastassov

We report on a study of exclusive radiative decays of the Upsilon(1S) resonance collected with the CLEO-II detector operating at CESR. We present the first observation of the radia…

hep-ex1998★ 53 cited

Observation of High Momentum $η^{'}$ Production in B Decay

T. E. Browder

We report the first observation of $B \to η^{'} X$ transitions with high momentum $η^{'}$ mesons. We observe $39.0 \pm 11.6$ B decay events with $2.0 < p_{η^{'}} < 2.7$ GeV/c, the high momentu…

hep-ex1998★ 26 cited

The Hadronic Transitions $U p s i l o n (2 S) \to U p s i l o n (1 S)$

J. Alexander

Using a data sample of $Υ (2 S)$ events collected with the CLEO II detector at the Cornell Electron Storage Ring, we have investigated the hadronic transitions between the $Υ (2 S)$ an…

hep-ex1998★ 87 cited

Two-Body B Meson Decays to $η$ and $η^{^{'}}$ -- Observation of $B \to η$ {'}K$

CLEO Collaboration, B. Behrens et al

In a sample of 6.6 million produced B mesons we have observed decays B -> eta' K, with branching fractions BR(B+ -> eta' K+ = 6.5 +1.5 -1.4 +- 0.9) x $1 0^{- 5}$ and BR(B0 -> eta' K0…

hep-ex1998★ 12 cited

Measurement of the Branching Ratios for the Decays of $D_{s}^{+} \to η π^{+}, η^{^{'}} π^{+}, η ρ^{+}$ , and $e t a^{^{'}} ρ^{+}$

CLEO Collaboration, C. P. Jessop et al

Using a data sample with integrated luminosity of about 3.9 fb^{-1} collected in e+ e- annihilation with the CLEO-II detector at the Cornell Electron Storage Ring, we have measured…

hep-ex1997★ 31 cited

New Limits for Neutrinoless Tau Decays

CLEO Collaboration, D. Bliss et al

Neutrinoless 3-prong tau lepton decays into a charged lepton and either two charged particles or one neutral meson have been searched for using 4.79 fb^{-1} of data collected with…

hep-ex1997★ 7 cited

Study of Semileptonic Decays of B Mesons to Charmed Baryons

CLEO Collaboration, G. Bonvicini et al

Using data collected by the CLEO II detector at the center-of-mass energy on or near the Upsilon(4S) resonance, we have determined the 90% confidence level upper limit B(Bbar --> L…

hep-ex1997★ 47 cited

Improved Measurement of the Pseudoscalar Decay Constant $f_{D_{s}}$

CLEO Collaboration, M. Chadha et al

We present a new determination of the Ds decay constant, f_{Ds} using 5 million continuum charm events obtained with the CLEO II detector. Our value is derived from our new measure…

hep-ex1997★ 66 cited

Observation of Exclusive Two-Body B Decays to Kaons and Pions

CLEO Collaboration, R. Godang et al

We have studied two-body charmless hadronic decays of B mesons into the final states $π π$ , $K π$ , and $K K$ . Using 3.3 million $B B ˉ$ pairs collected with the CLEO-II detector,…

hep-ex1997★ 61 cited

Flavor-Specific Inclusive B Decays to Charm

CLEO Collaboration, T. E. Coan et al

We have measured the branching fractions for B -> D_bar X, B -> D X, and B -> D_bar X \ell^+ ν, where ``B'' is an average over B^0 and B^+, ``D'' is a sum over D^0 and D^+, and``D_…

hep-ex1997★ 18 cited

Search for Color-Suppressed $B$ Hadronic Decay Processes with CLEO

CLEO Collaboration, B. Nemati et al

Using 3.1 fb $^{- 1}$ of data accumulated at the $Υ$ (4S) by the CLEO-II detector, corresponding to 3.3 million $B B ˉ$ pairs, we have searched for the color-suppressed $B$ hadroni…

hep-ex1997★ 10 cited

A New Upper Limit on the Decay $η \to e^{+} e^{-}$

CLEO Collaboration, T. Browder et al

We have searched for the rare decay of the eta meson $η \to e^{+} e^{-}$ using the CLEO II detector. The $η$ 's were produced in $e^{+} e^{-}$ collisions with 10 GeV center-of-mass ene…

hep-ex1997★ 22 cited

Limit on the Two-Photon Production of the Glueball Candidate $f_{J} (2220)$ at CLEO

CLEO Collaboration, R. Godang

We use the CLEO detector at the Cornell electron-positron storage ring, CESR, to search for the two-photon production of the glueball candidate f_J(2220) in its decay to K_s K_s. W…

hep-ex1997★ 16 cited

$Λ Λ ˉ$ Production in Two-Photon Interactions at CLEO

S. Anderson

Using the CLEO detector at the Cornell $e^{+} e^{-}$ storage ring, CESR, we study the two-photon production of $Λ Λ ˉ$ , making the first observation of $γ γ \to Λ Λ ˉ$ . We present the c…

hep-ex1997★ 5 cited

Tau Neutrino Helicity from $h^{\pm}$ Energy Correlations

T. Coan, CLEO Collaboration

We report a measurement of the magnitude of the tau neutrino helicity from tau-pair events taken with the CLEO detector at the CESR electron-positron storage ring. Events in which…

hep-ex1997★ 25 cited

Study of Gluon versus Quark Fragmentation in $Υ \to g g γ$ and $e^{+} e^{-} \to q q ˉ γ$ Events at \sqrt{s}=10 GeV

M. S. Alam

Using data collected with the CLEO II detector at the Cornell Electron Storage Ring, we determine the ratio R(chrg) for the mean charged multiplicity observed in Upsilon(1S)->gggam…

hep-ex1995★ 5 cited

Measurement of the Inclusive Semi-electronic $D^{0}$ Branching Fraction

CLEO Collaboration

Using the angular correlation between the $π^{+}$ emitted in a $D^{*+} \to D^{0} π^{+}$ decay and the $e^{+}$ emitted in the subsequent $D^{0} \to X e^{+} ν$ decay, we have measu…

hep-ex1995★ 63 cited

Observation of a Narrow State Decaying into $Ξ_{c}^{+} π^{-}$

CLEO Collaboration, P. Avery et al

Using data recorded by the CLEO-II detector at CESR, we report the first observation of a narrow state decaying into $Ξ_{c}^{+} π^{-}$ . The state has mass difference $M(Ξ_c^+π^-)-M(Ξ_c^+)…

hep-ex1995★ 121 cited

Search for Exclusive Charmless Hadronic B Decays

CLEO Collaboration, D. M. Asner et al

We have searched for two-body charmless hadronic decays of $B$ mesons. Final states include $π π$ , $K π$ , and $K K$ with both charged and neutral kaons and pions; $π ρ$ , $K ρ$ , and $K…

hep-ex1994★ 15 cited

Semileptonic Branching Fraction of Charged and Neutral B Mesons

The CLEO collaboration

An examination of leptons in $Υ (4 S)$ events tagged by reconstructed $B$ decays yields semileptonic branching fractions of $b_{-} = (10.1 \pm 1.8 \pm 1.4) %$ for charged and $b_0=(10.9…

hep-ph1994★ 32 cited

A Measurement of the Branching Fraction $B τ^{+} \to h^{-} π^{0} ν_{τ}$

The CLEO collaboration

Using data from the CLEO II detector at CESR, we measure $B (τ^{\pm} \to h^{\pm} π^{0} ν_{τ})$ where $h^{\pm}$ refers to either $π^{\pm}$ or $K^{\pm}$ . We use three different methods…

hep-ph1994★ 5 cited

Precision Measurement of the $D_{s}^{*+} - D_{s}^{+}$ Mass Difference

The CLEO Collaboration

We have measured the vector-pseudoscalar mass splitting $M (D_{s}^{*+}) - M (D_{s}^{+}) = 144.22 \pm 0.47 \pm 0.37 M e V$ , significantly more precise than the previous world average. We minimize…

First Observation of the Decay τ−→K∗−ηντ​

First Observation of Υ(1S)→γππ

Observation of High Momentum η′ Production in B Decay

The Hadronic Transitions Upsilon(2S)→Upsilon(1S)

Two-Body B Meson Decays to η and η′ -- Observation of B→η{'}K$

Measurement of the Branching Ratios for the Decays of Ds+​→ηπ+,η′π+,ηρ+, and eta′ρ+

New Limits for Neutrinoless Tau Decays

Study of Semileptonic Decays of B Mesons to Charmed Baryons

Improved Measurement of the Pseudoscalar Decay Constant fDs​​

Observation of Exclusive Two-Body B Decays to Kaons and Pions

Flavor-Specific Inclusive B Decays to Charm

Search for Color-Suppressed B Hadronic Decay Processes with CLEO

A New Upper Limit on the Decay η→e+e−

Limit on the Two-Photon Production of the Glueball Candidate fJ​(2220) at CLEO

ΛΛˉ Production in Two-Photon Interactions at CLEO

Tau Neutrino Helicity from h± Energy Correlations

Study of Gluon versus Quark Fragmentation in Υ→ggγ and e+e−→qqˉ​γ Events at \sqrt{s}=10 GeV

Measurement of the Inclusive Semi-electronic D0 Branching Fraction

Observation of a Narrow State Decaying into Ξc+​π−