Showing 2008 · hep-exShow all

34 papers · 2 filters

hep-ex2008★ 42 cited

Measurement of Cross Sections for Jet Production in Events with a Boson in Collisions at TeV

CDF collaboration, T. Aaltonen

A measurement of the $\bjet$ production cross section is presented for events containing a boson produced in collisions at TeV, using data correspond…

hep-ex2008★ 55 cited

Observation of New Charmless Decays of Bottom Hadrons

CDF Collaboration, T. Aaltonen

We search for new charmless decays of neutral b-hadrons to pairs of charged hadrons with the upgraded Collider Detector at the Fermilab Tevatron. Using a data sample corresponding…

hep-ex2008★ 20 cited

New Measurement of Exclusive Decays of the chi_c0 and chi_c2 to Two-Meson Final States

CLEO Collaboration, D. M. Asner

Using a sample of 2.59 times 10^7 psi(2S) decays collected by the CLEO--c detector, we present results of a study of chi_{c0} and chi_{c2} decays into two-meson final states. We pr…

hep-ex2008★ 345 cited

An Improved Limit on the Muon Electric Dipole Moment

G. W. Bennett, B. Bousquet, H. N. Brown +73

Three independent searches for an electric dipole moment (EDM) of the positive and negative muons have been performed, using spin precession data from the muon g-2 storage ring at…

hep-ex2008★ 13 cited

Top Quark Mass Measurement in the tt-bar All Hadronic Channel using a Matrix Element Technique in ppbar Collisions at sqrt s = 1.96 TeV

CDF Collaboration, T. Aaltonen

We present a measurement of the top quark mass in the all-hadronic channel (\tt \bb) using 943 pb of \ppbar collisions at $\sqrt {s}…

hep-ex2008★ 43 cited

Study of D0 --> pi- e+ nu(e), D+ --> pi0 e+ nu(e), D0 --> K- e+ nu(e), and D+ --> anti-K0 e+ nu(e) in Tagged Decays of the psi(3770) Resonance

CLEO Collaboration, J. Y. Ge

Using psi(3770) --> DDbar events collected with the CLEO-c detector at the Cornell e+ e- storage ring, tagged by fully reconstructing one D meson in a hadronic decay mode, we measu…

hep-ex2008★ 37 cited

Observation of decays to and $π^+π^-\e^+e^-$

CLEO Collaboration, P. Naik

Using psi(2S) --> pi+ pi- J/psi, J/psi --> gamma eta' events acquired with the CLEO-c detector at the CESR e+e- collider, we make the first observations of the decays eta' --> pi+…

hep-ex2008★ 8 cited

Improved Measurement of Branching Fractions for pipi Transitions among Upsilon(nS)States

CLEO Collaboration, S. R. Bhari

Using samples of (5.93 +/- 0.10) x 10^6 Upsilon(3S) decays and (9.11 +/- 0.14) x 10^6 Upsilon(2S) decays collected with the CLEO detector, we report improved measurements of the br…

hep-ex2008★ 48 cited

Search for Doubly Charged Higgs Bosons with Lepton-Flavor-Violating Decays involving Tau Leptons

CDF Collaboration

We search for pair production of doubly charged Higgs particles followed by decays into electron-tau and muon-tau pairs using data (350 inverse picobarns) collected from proton-ant…

hep-ex2008★ 10 cited

Observation of chi-b(1PJ,2PJ) decays to light hadrons

CLEO Collaboration, D. M. Asner

Analyzing decays acquired with the CLEO detector operating at the CESR collider, we measure for the first time the product branching fractions ${\cal B}[Υ(nS)\toγχ…

hep-ex2008★ 71 cited

Search for Supersymmetry in ppbar Collisions at sqrt(s)=1.96 TeV Using the Trilepton Signature for Chargino-Neutralino Production

CDF Collaboration, T. Aaltonen

We use the three lepton and missing energy "trilepton" signature to search for chargino-neutralino production with 2.0 inverse femtobarns of integrated luminosity collected by the…

hep-ex2008★ 18 cited

First Direct Bound on the Total Width of the Top Quark in ppbar Collisions at sqrt(s) = 1.96 TeV

CDF Collaboration, T. Aaltonen

We present the first direct experimental bound on the total decay width of the top quark using 955pb^-1 of the Tevatron's ppbar collisions recorded by the Collider Detector at Ferm…

hep-ex2008★ 114 cited

Precision Measurement of B(D+ -> mu+ nu) and the Pseudoscalar Decay Constant fD+

CLEO Collaboration, B. I. Eisenstein

We measure the branching ratio of the purely leptonic decay of the D+ meson with unprecedented precision as B(D+ -> mu+ nu) = (3.82 +/- 0.32 +/- 0.09)x10^(-4), using 818/pb of data…

hep-ex2008★ 86 cited

Search for Light CP-odd Higgs in Radiative Decays of Upsilon(1S)

CLEO Collaboration, W. Love

We search for a non-SM-like CP-odd Higgs boson (a0_1) with m(a0_1)< 2m(b) in radiative decays of the Upsilon(1S), using 21.5M Upsilon(1S) mesons directly produced in e+e- annihilat…

hep-ex2008★ 33 cited

Search for CP Violation in the Dalitz-Plot Analysis of D+/- -> K+ K- pi+/-

CLEO Collaboration, P. Rubin

We report on a search for CP asymmetry in the singly Cabibbo-suppressed decay D+ -> K+ K- pi+ using a data sample of 818 pb-1 accumulated with the CLEO-c detector on the psi(3770)…

hep-ex2008★ 8 cited

Inclusive chi_bJ(nP) Decays to D0 X

CLEO Collaboration, R. A. Briere

Using Upsilon(2S) and Upsilon(3S) data collected with the CLEO III detector we have searched for decays of chi_bJ to final states with open charm. We fully reconstruct D0 mesons wi…

hep-ex2008★ 14 cited

Observation of chi_cJ radiative decays to light vector mesons

CLEO Collaboration, J. V. Bennett

Using a total of 2.74 x 10^7 decays of the psi(2S) collected with the CLEO-c detector, we present a study of chi_cJ -> gamma V, where V = rho^0, omega, phi. The transitions chi_c1…

hep-ex2008★ 15 cited

Exclusive Baryon-Antibaryon Decays of the chi_cJ Mesons

CLEO Collaboration, P. Naik

Using a sample of 2.59 \times 10^7 psi(2S) decays collected by the CLEO--c detector, we present results of a study of chi_{cJ} (J=0,1,2) decays into baryon-antibaryon final states.…

hep-ex2008★ 8 cited

First Observation of Exclusive chi_cJ Decays to Two Charged and Two Neutral Hadrons

Q. He

We study exclusive chi_c0, chi_c1 and chi_c2 decays to four-hadron final states involving two charged and two neutral mesons: pi^+pi^-pi^0pi^0, K^+K^-pi^0pi^0, pppi^0pi^0, K^+K^-et…

hep-ex2008★ 15 cited

Inclusive Radiative Decays

The CLEO Collaboration

Using data taken with the CLEO-c detector at the Cornell Electron Storage Ring, we have investigated the direct photon momentum spectrum in the decay J/psi->gamma+gluon+gluon, via…

hep-ex2008★ 8 cited

Measurement of the eta'-meson mass using J/psi--> gamma eta'

CLEO Collaboration, J. Libby

We measure the mass of the eta' meson using psi(2S)--> pi+ pi- J/psi, J/psi--> gamma eta' events acquired with the CLEO-c detector operating at the CESR e+e- collider. Using three…

hep-ex2008★ 76 cited

Precision Measurement of the Mass of the h_c(1P1) State of Charmonium

CLEO Collaboration, S. Dobbs

A precision measurement of the mass of the h_c(1P1) state of charmonium has been made using a sample of 24.5 million psi(2S) events produced in e+e- annihilation at CESR. The react…

hep-ex2008★ 97 cited

J/psi and psi(2S) Radiative Transitions to eta_c

CLEO Collaboration, R. E. Mitchell

Using 24.5 million psi(2S) decays collected with the CLEO-c detector at CESR we present the most precise measurements of magnetic dipole transitions in the charmonium system. We me…

hep-ex2008★ 19 cited

First Observation of the Decay D_s^+ to proton anti-neutron

CLEO Collaboration, S. B. Athar

Using e^+e^- -> D_s^*+ D_s^- data collected near the peak D_s production energy, E_cm=4170 MeV, with the CLEO-c detector, we present the first observation of the decay D_s^+ -> pro…