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19912026
Showing 2003 · hep-exShow all

42 papers · 2 filters

hep-ex2003★ 12 cited

Selection of Tau Leptons with the CDF II Trigger System

S. Baroiant, M. Chertok, M. Goncharov +14

In Run II of the CDF experiment, traditional dilepton triggers are enriched by lepton (electrons or muons) plus track, di-tau and tau plus missing transverse energy triggers at Lev…

hep-ex2003★ 626 cited

Observation of the Narrow State in Collisions at $\sqrt{s}=1.96 \TeV$

the CDF II Collaboration, D. Acosta, T. Affolder +8

We report the observation of a narrow state decaying into and produced in of collisions at in the CDF II experiment. We o…

hep-ex2003★ 69 cited

Dalitz plot analysis of D_s+ and D+ decay to pi+pi-pi+ using the K-matrix formalism

FOCUS Collaboration

FOCUS results from Dalitz plot analysis of D_s+ and D+ to pi+pi-pi+ are presented. The K-matrix formalism is applied to charm decays for the first time to fully exploit the already…

hep-ex2003★ 16 cited

Heavy flavor properties of jets produced in interactions at 1.8 TeV

D. Acosta

We present a detailed examination of the heavy flavor properties of jets produced at the Fermilab Tevatron collider. The data set, collected with the Collider Detector at Fermilab,…

hep-ex2003★ 12 cited

Measurement of the polar-angle distribution of leptons from W boson decay as a function of the W transverse momentum in proton-antiproton collisions at sqrt{s}=1.8 TeV

L. Cerrito

We present a measurement of the coefficient alpha_2 of the leptonic polar-angle distribution from W boson decays, as a function of the W transverse momentum. The measurement uses a…

hep-ex2003★ 14 cited

Inclusive Double Pomeron Exchange at the Fermilab Tevatron pbar-p Collider

D. Acosta

We report a study of at GeV, where is a proton or system of mass-squared GeV. In a sample of events with a leading…

hep-ex2003★ 1 cited

Charm-anticharm baryon production asymmetries in photon-nucleon interactions

FOCUS Collaboration

We report measurements of the charm-anticharm production asymmetries for , , , , , and baryons from the Fermilab photopro…

hep-ex2003★ 74 cited

Combination of CDF and D0 Results on W Boson Mass and Width

V. M. Abazov

The results based on 1992-95 data (Run 1) from the CDF and DO experiments on the measurements of the W boson mass and width are presented, along with the combined results. We repor…

hep-ex2003★ 3 cited

Study of Hadronic Five-Body Decays of Charmed Mesons Involving

the FOCUS Collaboration, J. M. Link

We study the decay of and mesons into five-body final states including a and report the discovery of the decay mode . The branc…

hep-ex2003★ 186 cited

On the narrow dip structure at 1.9 GeV/c in diffractive photoproduction

P. L. Frabetti

The narrow dip observed at 1.9 GeV/c by the Fermilab experiment E687 in diffractive photoproduction of is examined. The E687 data are refitted, a mechanism is propo…

hep-ex2003★ 18 cited

Measurement of the Mass Difference m(D_s^+) - m(D^+) at CDF II

The CDF II Collaboration

We present a measurement of the mass difference m(D+_s) - m(D+), where both the D+_s and D+ are reconstructed in the phi pi+ decay channel. This measurement uses 11.6 pb-1 of data…

hep-ex2003★ 126 cited

Search for the Rare Decay KL --> pi0 ee

KTeV collaboration, A. Alavi-Harati

The KTeV/E799 experiment at Fermilab has searched for the rare kaon decay KL--> pi0ee. This mode is expected to have a significant CP violating component. The measurement of its br…

hep-ex2003★ 12 cited

Study of the decay mode D^0 -> K-K-K+pi+

FOCUS Collaboration, J. Link

Using data from the FOCUS (E831) experiment at Fermilab, we present a new measurement of the branching ratio for the Cabibbo-favored decay mode . From a sampl…

hep-ex2003

LHC Symposium 2003: Summary Talk

J. A. Appel

This summary talk reviews the LHC 2003 Symposium, focusing on expectations as we prepare to leap over the current energy frontier into new territory. We may learn from what happene…

hep-ex2003★ 10 cited

Search for the Flavor-Changing Neutral Current Decay D^0\toμ^+μ^- in p\bar{p} Collisions at \sqrt{s}=1.96 TeV

CDF Collaboration, D. Acosta

We report on a search for the flavor-changing neutral current decay D^0\toμ^+μ^- in p\bar{p} collisions at \sqrt{s}=1.96 TeV using 65\ipb of data collected by the CDF II experiment…

hep-ex2003★ 13 cited

Interference Study of the chi_c0 (1^3P_0) in the Reaction Proton-Antiproton -> pi^0 pi^0

Fermilab E835 Collaboration

Fermilab experiment E835 has observed proton-antiproton annihilation production of the charmonium state chi_c0 and its subsequent decay into pi^0 pi^0. Although the resonant amplit…

hep-ex2003★ 66 cited

Search for New Particles in the Two-Jet Decay Channel with the D0 Detector

V. M. Abazov

We present the results of a search for the production of new particles decaying into two jets in pbarp collisions at sqrt{s} = 1.8 TeV, using the DZero 1992-1995 data set correspon…

hep-ex2003★ 18 cited

Observation of Diffractively Produced W and Z Bosons in pbar-p Collisions at root-s = 1800 GeV

D0 collaboration, V. M. Abazov

Using the D0 detector, we have observed events produced in pbar-p collisions that contain W or Z bosons in conjunction with very little energy deposition (``rapidity gaps'') in lar…

hep-ex2003★ 1 cited

Future Accelerators (?)

John Womersley

I describe the future accelerator facilities that are currently foreseen for electroweak scale physics, neutrino physics, and nuclear structure. I will explore the physics justific…

hep-ex2003★ 6 cited

Production of pizero and eta mesons at large transverse momenta in pi-p and pi-Be interactions at 515 GeV/c

Fermilab E706 Collaboration, L. Apanasevich

We present results on the production of high transverse momentum pizero and eta mesons in pi-p and pi-Be interactions at 515 GeV/c. The data span the kinematic ranges 1 < p_T < 11…

hep-ex2003★ 39 cited

J/Psi Polarization in 800-GeV p-Cu Interactions

T. H. Chang, M. E. Beddo, C. N. Brown +30

We present measurements of the polarization of the produced in 800-GeV proton interactions with a copper target. Polarization of the is sensitive to the …

hep-ex2003★ 27 cited

Observation of the Hadronic Transitions Chi_{b 1,2}(2P) -> omega Upsilon(1S)

H. Severini

The CLEO Collaboration has observed the first hadronic transition among bottomonium (b bbar) states other than the dipion transitions among vector states, Upsilon(nS) -> pi pi Upsi…

hep-ex2003★ 210 cited

Measurement of Prompt Charm Meson Production Cross Sections in p anti-p Collisions at s**(1/2) = 1.96 TeV

The CDF Collaboration, D. Acosta

We report on measurements of differential cross sections d sigma/d p_t for prompt charm meson production in p anti-p collisions at s**(1/2) = 1.96 TeV using 5.8 +/- 0.3 pb-1 of dat…

hep-ex2003★ 12 cited

Search for lepton flavor violating decays of a heavy neutral particle in p-pbar collisions at root(s)=1.8 TeV

The CDF Collaboration, D. Acosta

We report on a search for a high mass, narrow width particle that decays directly to e+mu, e+tau, or mu+tau. We use approximately 110 pb^-1 of data collected with the Collider Dete…