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71 papers · 2 filters
Measurement of the J/Psi Meson and b-Hadron Production Cross Sections in ppbar Collisions at sqrt s = 1960 GeV
D. Acosta, CDF Collaboration
We present a new measurement of the inclusive and differential production cross sections of mesons and -hadrons in proton-antiproton collisions at GeV. The…
Future Hadron Physics Facilities at Fermilab
Jeffrey A. Appel
Fermilab's hadron physics research continues in all its accelerator-based programs. These efforts will be identified, and the optimization of the Fermilab schedules for physics wil…
Measurement of the Lifetime Difference Between B_s Mass Eigenstates
D. Acosta
We present measurements of the lifetimes and polarization amplitudes for B_s --> J/psi phi and B_d --> J/psi K*0 decays. Lifetimes of the heavy (H) and light (L) mass eigenstates i…
Measurement of the Cross Section for Prompt Diphoton Production in p-pbar Collisions at sqrt(s) = 1.96 TeV
D. Acosta et al
We report a measurement of the rate of prompt diphoton production in collisions at using a data sample of 207 pb collected with the up…
Search for Anomalous Kinematics in ttbar Dilepton Events at CDF II
CDF collaboration, D. Acosta
We report on a search for anomalous kinematics of ttbar dilepton events in ppbar collisions at sqrt{s}=1.96 TeV using 193 {pb}^{-1} of data collected with the CDF II detector. We d…
Measurement of the doubly Cabibbo suppressed decay and a search for charm mixing
FOCUS Collaboration, J. M. Link
We present an analysis of the decay based on FOCUS data. From a sample of 234 signal events, we find a branching ratio of $\frac{Γ(D^0 \to K^+π^-)}{Γ(D^0 \to K^-π^…
Measurements of Bottom Anti-Bottom Azimuthal Production Correlations in Proton-Antiproton Collisions at s**(1/2)= 1.8 TeV
CDF Collaboration
We have measured the azimuthal angular correlation of bottom anti-bottom production, using 86.5 pb-1 of data collected by Collider Detector at Fermilab (CDF) in proton anti-proton…
A Search for Anomalous Heavy-Flavor Quark Production in Association with W Bosons
D0 Collaboration, V. M. Abazov
We present a search for anomalous production of heavy-flavor quark jets in association with a W boson at the Fermilab Tevatron ppbar Collider. This search is conducted through an e…
Measurement of the W Boson Polarization in Top Decay at CDF at s**(1/2) = 1.8 TeV
CDF Collaboration
The polarization of the boson in decay is unambiguously predicted by the Standard Model of weak interactions and is a powerful test of our understanding of the $tbW…
Measurement of the Forward-Backward Charge Asymmetry of Electron-Positron Pairs in Proton anti-Proton Collisions at s**(1/2)=1.96-TeV
CDF Collaboration
We present a measurement of the mass dependence of the forward-backward charge asymmetry (A_{FB}) for electron-positron pairs produced via an intermediate Z/gamma with mass Mee > 4…
Recent Run II QCD Results from DO
Markus Wobisch
We present recent QCD results from the D0 experiment at the Fermilab Tevatron Collider in pp-bar collisions at sqrt(s)=1.96 TeV. Results are presented for the inclusive jet and dij…
High Statistics Search for the Theta+(1.54) Pentaquark State
M. J. Longo, R. A. Burnstein, A. Chakravorty +30
We have searched for Theta+(1.54) -> K0,p decays using data from the 1999 run of the HyperCP experiment at Fermilab. We see no evidence for a narrow peak in the K0,p mass distribut…
First Observation of a New Narrow D_sJ Meson at 2632MeV/c^2
Peter S. Cooper
We report the first observation of a charm-strange meson D_sJ(2632) at a mass of 2632.5+/-1.7 MeV/c^2 in data from SELEX, the charm hadro-production experiment E781 at Fermilab. Th…
Top Pair Production Cross-Section Measurement in the All-Hadronic Channel at CDF and Dzero
Daniel Wicke
Measurements of the ttbar production cross-section at \sqrt{s} = 1.96TeV in proton-antiproton collisions were performed by the CDF and Dzero collaborations using ttbar final states…
Measurement of the Top Quark Mass In All-Jet Events
D0 Collaboration, V. M. Abazov
We describe a measurement of the mass of the top quark from the purely hadronic decay modes of t-tbar pairs using all-jet data produced in p-pbar collisions at sqrt{s} = 1.8 TeV at…
E835 at FNAL: Charmonium Spectroscopy in Annihilations
Claudia Patrignani
I present preliminary results on the search for in its and decay modes. We observe an excess of η_cγ{\cal P} \s…
A Measurement of the Ratio of Inclusive Cross Sections pp->Z+b-jet/pp->Z+jet at sqrt(s) = 1.96-TeV
D0 Collaboration, V. M. Abazov
Using the data collected with the DZero detector at sqrt(s)=1.96-TeV, for integrated luminosities of about 180 pb^{-1}, we have measured the ratio of inclusive cross sections for p…
Search for Scalar Leptoquark Pairs Decaying to in \ppbar Collisions at TeV
CDF Collaboration, D. Acosta
We report on a search for the pair production of scalar leptoquarks, , using 191 pb of proton-antiproton collision data recorded by the CDF experiment during Run II of t…
Pentaquark Searches at CDF
Dmitry Litvintsev, for CDF Collaboration
Recently there has been revival of interest in exotic baryon spectroscopy triggered by experimental evidence for pentaquarks containing u,d,s and c-quarks. We report results of the…
Analysis of the semileptonic decay
the FOCUS Collaboration, J. M. Link
Using data collected by the fixed target Fermilab experiment FOCUS, we present several first measurements for the semileptonic decay . Using a model that…
Measurements of the Branching Fractions and Decay Distributions for KL->πμνγand KL->πeνγ
T. Alexopoulos, T. Andre, M. Arenton +56
We present measurements of R_Kl3rad = Gamma(KL->π\ellνγ; Egcm > 10 MeV)/Gamma(KL->π\ellν), where ell = mu or e, and Egcm is the photon energy in the kaon rest frame. These measurem…
Measurement of the branching ratio of the decay D^0 -> π^-μ^+νrelative to D^0 -> K^-μ^+ν
FOCUS Collaboration
We present a new measurement of the branching ratio of the Cabibbo suppressed decay D^0\to π^-μ^+νrelative to the Cabibbo favored decay D^0\to K^-μ^+νand an improved measurement of…
Measurement of the WW production cross section in p anti-p collisions at s**(1/2) = 1.96 TeV
D0 Collaboration, V. M. Abazov
We present a measurement of the W boson pair-production cross section in p anti-p collisions at a center-of-mass energy of sqrt{s}=1.96 TeV. The data, collected with the Run II DO…
A search for W bb and W Higgs production in ppbar collisions at sqrt(s)=1.96 TeV
D0 Collaboration, V. M. Abazov
We present a search for W b \bar{b} production in p \bar{p} collisions at sqrt{s}=1.96 TeV in events containing one electron, an imbalance in transverse momentum, and two b-tagged…