Showing 2007 · hep-exShow all

36 papers · 2 filters

hep-ex2007★ 32 cited

A Study of the Semileptonic Charm Decays D^0 --> pi^- e^+ nu_e, D^+ --> pi^0 e^+ nu_e, D^0 --> K^- e^+ nu_e, and D^+ --> barK^0 e^+ nu_e

CLEO Collaboration, S. Dobbs

Using a sample of 1.8 million DDbar meson pairs collected at the psi(3770) with the CLEO-c detector, we study the semileptonic decays D^0 -> pi^- e^+ nu_e, D^+ -> pi^0 e^+ ν_e, D^0…

hep-ex2007★ 12 cited

A Study of the Decays D^0 --> pi^- e^+ nu_e, D^0 --> K^- e^+ nu_e, D^+ --> pi^0 e^+ nu_e, and D^+ --> barK^0 e^+ nu_e

D. Cronin-Hennessy, CLEO Collaboration

Using 1.8 million DDbar pairs and a neutrino reconstruction technique, we have studied the decays D^0 -> K^- e^+ nu_e, D^0 -> pi^- e^+ nu_e, D^+ -> Kbar^0 e^+ nu_e, and D^+ -> pi^0…

hep-ex2007★ 12 cited

First Measurement of the Fraction of Top Quark Pair Production Through Gluon-Gluon Fusion

CDF Collaboration, T. Aaltonen

We present the first measurement of the fraction of top quark pair production through gluon-gluon fusion. We use 0.96/fb of s**(1/2)=1.96 TeV p-pbar collision data recorded with th…

hep-ex2007★ 33 cited

Measurement of the Absolute Branching Fraction of D_s^+ --> tau^+ nu_tau Decay

CLEO Collaboration, K. M. Ecklund

Using a sample of tagged D_s decays collected near the D^*_s D_s peak production energy in e+e- collisions with the CLEO-c detector, we study the leptonic decay D^+_s to tau^+ nu_t…

hep-ex2007★ 96 cited

Measurement of Inclusive Jet Cross Sections in Z/g* (-> ee)+jets Production in ppbar Collisions at sqrt(s)=1.96 TeV

T. Aaltonen

Inclusive jet cross sections in Z/gamma^* events, with Z/gamma^* decaying into an electron-positron pair, are measured as a function of jet transverse momentum and jet multiplicity…

hep-ex2007

Hadronic Physics

Hanna Mahlke

A selection of studies highlighting different manifestations of the strong interaction are presented. Many new results have become available this summer in the regimes of discovery…

hep-ex2007★ 12 cited

Search for chargino-neutralino production in p-pbar collisions at 1.96 TeV with high pT leptons

CDF Collaboration, T. Aaltonen

We present a search for the associated production of charginos and neutralinos in p-pbar collisions at 1.96 TeV. The data were collected at the Collider Detector at Fermilab (CDF I…

hep-ex2007★ 40 cited

Comparison of D --> K_s^0 pi and D --> K_L^0 pi Decay Rates

Q. He, for CLEO Collaboration

We present measurements of D -> K0_S pi and D -> K0_L pi branching fractions using 281 pb-1 of psi(3770) data at the CLEO-c experiment. We find that B(D0 -> K0_S pi0) is larger tha…

hep-ex2007★ 44 cited

Limits on the Production of Narrow t-tbar Resonances in p-pbar Collisions at sqrt(s)=1.96 TeV

CDF Collaboration, T. Aaltonen

We search for evidence of resonant top quark pair production in 955 pb-1 of p-pbar collisions at sqrt(s)=1.96 TeV recorded with the CDF II detector at the Fermilab Tevatron. For fu…

hep-ex2007★ 1 cited

Recent Results in Bottomonium / Ties to Charmonium

D. Kreinick

Recent results in studies of bottomonium especially relevant to charmonium are reviewed. This report covers dipion transition matrix elements, production in transitions, $Υ…

hep-ex2007★ 100 cited

Observation of Orbitally Excited B_s Mesons

CDF Collaboration, T. Aaltonen

We report the first observation of two narrow resonances consistent with states of orbitally excited (L=1) B_s mesons using 1 fb^{-1} of ppbar collisions at sqrt{s} = 1.96 TeV coll…

hep-ex2007★ 73 cited

Search for Lorentz and CPT Violation Effects in Muon Spin Precession

2 Collaboration, G. W. Bennett

The spin precession frequency of muons stored in the storage ring has been analyzed for evidence of Lorentz and CPT violation. Two Lorentz and CPT violation signatures were…

hep-ex2007★ 126 cited

Measurement of Absolute Hadronic Branching Fractions of D Mesons and e^+ e^- --> D D-bar Cross Sections at the psi(3770)

CLEO Collaboration, S. Dobbs

Using 281 /pb of e^+ e^- collisions recorded at the psi(3770) resonance with the CLEO-c detector at CESR, we determine absolute hadronic branching fractions of charged and neutral…

hep-ex2007★ 3 cited

The 4th Concept Detector for the International Linear Collider

Sung Keun Park, Franco Grancagnolo, John Hauptman +2

The 4th Concept detector presently being designed for the International Linear Collider introduces several innovations in order to achieve the necessary experimental goal of a dete…

hep-ex2007★ 10 cited

Suppressed Decays of D_s^+ Mesons to Two Pseudoscalar Mesons

G. S. Adams

Using data collected near the Ds*+ Ds- peak production energy Ecm = 4170 MeV by the CLEO-c detector, we study the decays of Ds+ mesons to two pseudoscalar mesons. We report on sear…

hep-ex2007★ 32 cited

Measurement of Prominent eta Decay Branching Fractions

A. Lopez, CLEO Collaboration

The decay psi(2S) --> eta J/psi is used to measure, for the first time, all prominent eta-meson branching fractions with the same experiment in the same dataset, thereby providing…

hep-ex2007★ 12 cited

Measurement of the eta-Meson Mass using psi(2S) --> eta J/psi

D. H. Miller, CLEO Collaboration

We measure the mass of the eta meson using psi(2S) --> eta J/psi events acquired with the CLEO-c detector operating at the CESR e+e- collider. Using the four decay modes eta --> ga…

hep-ex2007★ 50 cited

First Measurement of the W Boson Mass in Run II of the Tevatron

T. Aaltonen

We present a measurement of the W boson mass using 200/pb of data collected in pbar p collisions at sqrt(s) = 1.96 TeV by the CDF II detector at Run II of the Fermilab Tevatron. Wi…

hep-ex2007★ 39 cited

Search for New Particles Leading to Z+jets Final States in Collisions at TeV

CDF Collaboration, T. Aaltonen

We present the results of a search for new particles that lead to a \Z boson plus jets in collisions at TeV using the Collider Detector at Fermilab (CDF…

hep-ex2007★ 20 cited

Search for Third Generation Vector Leptoquarks in p anti-p Collisions at sqrt(s) = 1.96 TeV

CDF Collaboration, T. Aaltonen

We describe a search for a third generation vector leptoquark (VLQ3) that decays to a b quark and tau lepton using the CDF II detector and 322 pb^(-1) of integrated luminosity from…

hep-ex2007★ 32 cited

Measurement of the p anti-p to t anti-t Production Cross Section and the Top Quark Mass at sqrt{s}=1.96 TeV in the All-Hadronic Decay Mode

CDF Collaboration, T. Aaltonen

We report the measurements of the t anti-t production cross section and of the top quark mass using 1.02 fb^-1 of p anti-p data collected with the CDFII detector at the Fermilab Te…

hep-ex2007★ 27 cited

Measurement of the Total Hadronic Cross Section in e+e- Annihilations below 10.56 GeV

D. Besson, CLEO Collaboration

Using the CLEO III detector, we measure absolute cross sections for e+e- --> hadrons at seven center-of-mass energies between 6.964 and 10.538 GeV. The values of R, the ratio of ha…

hep-ex2007★ 38 cited

Study of Di-Pion Transitions Among Upsilon(3S), Upsilon(2S), and Upsilon(1S) States

CLEO Collaboration, D. Cronin-Hennessy

We present measurements of decay matrix elements for hadronic transitions of the form Upsilon(nS) -> pi pi Upsilon(mS) where (n, m) = (3, 1), (2, 1), and (3, 2). We reconstruct cha…

hep-ex2007★ 11 cited

Evidence for the Decay D^0 --> K^_pi^+pi^-e^+nu_e

M. Artuso, CLEO Collaboration

Using a 281 pb^{-1} data sample collected at the psi(3770) with the CLEO-c detector, we present the first absolute branching fraction measurement of the decay D^0 rightarrow K^-pi^…