Showing 2009 · hep-exShow all

32 papers · 2 filters

hep-ex2009★ 12 cited

Search for New Physics with a Dijet plus Missing Transverse Energy Signature in p-pbar Collisions at sqrt(s) = 1.96 TeV

T. Aaltonen

We present results of a signature-based search for new physics using a dijet plus missing transverse energy data sample collected in 2 fb-1 of p-pbar collisions at sqrt(s) = 1.96 T…

hep-ex2009★ 28 cited

A study of the associated production of photons and b-quark jets in p-pbar collisions at sqrt{s} = 1.96 TeV

CDF collaboration

The cross section for photon production in association with at least one jet containing a -quark hadron has been measured in proton antiproton collisions at TeV.…

hep-ex2009★ 83 cited

Search for Fermion-Pair Decays $Q\Qbar \to (\t\Wmp)(\tbar\Wpm)$ in Same-Charge Dilepton Events

The CDF Collaboration

We report the most restrictive direct limits on masses of fourth-generation down-type quarks , and quark-like composite fermions ( or ), decaying promptly t…

hep-ex2009★ 26 cited

Measurement of absolute branching fractions of inclusive semileptonic decays of charm and charmed-strange mesons

The CLEO Collaboration

We have measured the inclusive semileptonic branching fractions of , , and mesons. For these measurements, we have used the full CLEO-c open-charm data samples, 8…

hep-ex2009★ 65 cited

Measurement of the Pseudoscalar Decay Constant fDs Using Ds+ -> tau+ nu, tau+ -> rho+ anti-nu Decays

The CLEO Collaboration

Analyzing 600/pb of e+e- collisions at 4170 MeV center-of-mass energy with the CLEO-c detector, we measure the branching fraction B(Ds+ -> tau+ nu)=(5.52\pm 0.57\pm 0.21)% using th…

hep-ex2009★ 29 cited

Measurement of the WW+WZ Production Cross Section Using the Lepton+Jets Final State at CDF II

The CDF Collaboration

We report two complementary measurements of the WW+WZ cross section in the final state consisting of an electron or muon, missing transverse energy, and jets, performed using p\bar…

hep-ex2009★ 16 cited

Search for psi(2S) -> gamma eta_c(2S) via fully reconstructed eta_c(2S) decays

CLEO Collaboration, D. Cronin-Hennessy

We report a search for the decay psi(2S) -> gamma eta_c(2S) in a sample of 25.9 million psi(2S) events collected with the CLEO-c detector. No signals are observed in any of the 11…

hep-ex2009★ 25 cited

Higher-order multipole amplitudes in charmonium radiative transitions

M. Artuso

Using 24 million decays in CLEO-c, we have searched for higher multipole admixtures in electric-dipole-dominated radiative transitions in charmonia. We find good…

hep-ex2009★ 66 cited

Measurement of the eta_b(1S) mass and the branching fraction for Upsilon(3S) --> gamma eta_b(1S)

The CLEO Collaboration, G. Bonvicini, D. Cinabro +91

We report evidence for the ground state of bottomonium, eta_b(1S), in the radiative decay Upsilon(3S) --> gamma eta_b in e^+e^- annihilation data taken with the CLEO III detector.…

hep-ex2009★ 6 cited

Inclusive Radiative psi(2S) Decays

J. Libby

Using e+e- collision data taken with the CLEO-c detector at the Cornell Electron Storage Ring, we have investigated the direct photon spectrum in the decay psi(2S)->gamma+gluon+glu…

hep-ex2009★ 15 cited

A Search for the Higgs Boson Produced in Association with Using the Matrix Element Method at CDF II

The CDF Collaboration, T. Aaltonen

We present a search for associated production of the standard model (SM) Higgs boson and a boson where the boson decays to two leptons and the Higgs decays to a pair of …

hep-ex2009★ 49 cited

Measurement of of Drell-Yan pairs in the Mass Region from Collisions at TeV

The CDF Collaboration, T. Aaltonen

We report on a CDF measurement of the total cross section and rapidity distribution, , for events in the boson mass region ($66<M_{ee…

hep-ex2009★ 9 cited

Searching the Inclusive Lepton + Photon + Missing ET + b-quark Signature for Radiative Top Quark Decay and Non-Standard-Model Processes

CDF Collaboration, T. Aaltonen

In a search for new phenomena in a signature suppressed in the standard model of elementary particles (SM), we compare the inclusive production of events containing a lepton, a pho…

hep-ex2009★ 74 cited

Study of the semileptonic decay Ds+ -> f0(980) e+ nu and implications for Bs -> J/psi f0

CLEO Collaboration, K. M. Ecklund

Using e+e- -> Ds^-Ds^{*+} and Ds^{*-}Ds^+ interactions at 4170 MeV collected with the CLEO-c detector, we investigate the semileptonic decays Ds+ -> f0(980) e+ nu, and Ds+ -> phi e…

hep-ex2009★ 39 cited

Search for a Higgs Boson Produced in Association with a W Boson in pbar-p Collisions at sqrt{s} = 1.96 TeV

CDF Collaboration, T. Aaltonen

We present a search for a standard model Higgs boson produced in association with a W boson using 2.7 1/fb of integrated luminosity of pbar-p collision data taken at sqrt{s} = 1.96…

hep-ex2009★ 17 cited

Evidence for Decays of h_c to Multi-Pion Final States

CLEO Collaboration, G. S. Adams

Using a sample of 2.59 x 10^7$ psi(2S) decays collected by the CLEO--c detector, we present results of a search for the decay chain psi(2S) -> pi^0 h_c, h_c -> n(pi^+ pi^-) pi^0, n…

hep-ex2009★ 59 cited

Measurements of D Meson Decays to Two Pseudoscalar Mesons

The CLEO Collaboration, H. Mendez

Using data collected on the psi(3770) resonance and near the Ds*+ Ds- peak production energy by the CLEO-c detector, we study the decays of the possible D->PP modes and report meas…

hep-ex2009★ 133 cited

Improved measurements of D meson semileptonic decays to pi and K mesons

The CLEO Collaboration, D. Besson

Using the entire CLEO-c ψ(3770)-> D\bar{D} event sample, corresponding to an integrated luminosity of $818 pb^-1 and approximately 5.4 million D\bar{D} events, we present a study o…

hep-ex2009★ 12 cited

Ds+ Exclusive Hadronic Decays Involving omega

The CLEO Collaboration, J. Y. Ge

Using data collected near the Ds*+ Ds- peak production energy Ecm=4170 MeV by the CLEO-c detector, we search for Ds+ exclusive hadronic decays involving omega. We find B(Ds+ -> pi+…

hep-ex2009★ 15 cited

Search for D0 to p e- and D0 to pbar e+

c Collaboration, P. Rubin

Using data recorded by CLEO-c detector at CESR, we search for simultaneous baryon and lepton number violating decays of the D^0 meson, specifically, D^0 --> p-bar e^+, D^0-bar -->…

hep-ex2009★ 31 cited

Search for a Fermiophobic Higgs Boson Decaying into Diphotons in p p-bar Collisions at sqrt{s} = 1.96 TeV

CDF Collaboration, T. Aaltonen

A search for a narrow diphoton mass resonance is presented based on data from 3.0 fb^{-1} of integrated luminosity from p-bar p collisions at sqrt{s} = 1.96 TeV collected by the CD…

hep-ex2009★ 7 cited

Inclusive Hadron Yields from Ds+ Decays

CLEO Collaboration, S. Dobbs

We study the inclusive decays of Ds+ mesons, using data collected near the Ds*+ Ds- peak production energy E_cm=4170 MeV by the CLEO-c detector. We report the inclusive yields of D…

hep-ex2009★ 45 cited

Charmonium decays to gamma pi0, gamma eta, and gamma eta'

CLEO Collaboration, T. K. Pedlar

Using data acquired with the CLEO-c detector at the CESR e+e- collider, we measure branching fractions for J/psi, psi(2S), and psi(3770) decays to gamma pi0, gamma eta, and gamma e…

hep-ex2009★ 134 cited

First Measurement of the $\lowercase{\ttbar}$ Differential Cross Section $\lowercase{dσ/d}M_{\lowercase{t\overline{t}}}$ in $\lowercase{\ppbar}$ Collisions at $\sqrt{\lowercase{s}}=1.96$ TeV

T. Aaltonen

We present a measurement of the $\ttbar$ differential cross section with respect to the $\ttbar$ invariant mass, dSigma/dMttbar, in $\ppbar$ collisions at TeV using…