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19922026
Showing 2004 · hep-exShow all

54 papers · 2 filters

hep-ex2004★ 699 cited

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…

hep-ex2004★ 100 cited

Search for a Charged Partner of the X(3872) in the B Meson Decay B --> X- K, X- --> J/psi pi- pi0

B. Aubert, BaBar Collaboration

We search for a charged partner of the X(3872) in the decay B --> X- K, X- --> J/psi pi- pi0, using 234 million BBbar events collected at the Y(4S) resonance with the BaBar detecto…

hep-ex2004★ 42 cited

Branching Fractions and CP Asymmetries in B0 -> pi0pi0, B+ -> pi+pi0 and B+ -> K+pi0 Decays and Isospin Analysis of the B -> pipi System

The BABAR Collaboration, B. Aubert

Based on a sample of 227 million BBbar pairs collected by the BaBar detector at the PEP-II asymmetric-energy B Factory at SLAC, we measure the branching fraction B(B0 -> pi0pi0) =…

hep-ex2004★ 58 cited

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…

hep-ex2004★ 37 cited

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…

hep-ex2004★ 12 cited

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…

hep-ex2004★ 6 cited

Measurement of Branching Fraction and Dalitz Distribution for B0->D(*)+/- K0 pi-/+ Decays

B. Aubert, BABAR Collaboration

We present measurements of the branching fractions for the three-body decays B0 -> D(*)-/+ K0 pi^+/-B0 -> D(*)-/+ K*+/- using a sample of approximate…

hep-ex2004★ 34 cited

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…

hep-ex2004★ 28 cited

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…

hep-ex2004★ 52 cited

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…

hep-ex2004★ 5 cited

Measurements of B meson decays to omega K* and omega rho

The BABAR Collaboration, B. Aubert

We describe searches for B meson decays to the charmless vector-vector final states omega K* and omega rho in 89 million B-Bbar pairs produced in e+e- annihilation at sqrt(s)=10.58…

hep-ex2004★ 16 cited

Measurement of the Ratio BR(B- --> D*0 K-)/BR(B- --> D*0 pi-) and of the CP Asymmetry of B- --> D*0(CP+) K- Decays

The BABAR Collaboration, B. Aubert

We study the decays B- --> D*0 pi- and B- --> D*0 K-, where the D*0 decays into D0 pi0, with the D0 reconstructed in the CP-even (CP+) eigenstates K- K+ and pi- pi+ and in the (non…

hep-ex2004★ 9 cited

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…

hep-ex2004★ 36 cited

Measurement of K^0_e3 form factors

NA48 collaboration

The semileptonic decay of the neutral K meson, KL -> pi e nu (Ke3), was used to study the strangeness-changing weak interaction of hadrons. A sample of 5.6 million reconstructed ev…

hep-ex2004★ 5 cited

Comparison of Three-jet Events in Proton-Antiproton Collisions at Center-of-mass Energy 1.8 TeV to Predictions from a Next-to-leading Order QCD Calculation

D. Acosta, T. Affolder, M. G. Albrow +410

The properties of three-jet events with total transverse energy greater than 320 GeV and individual jet energy greater than 20 GeV have been analyzed and compared to absolute predi…

hep-ex2004★ 27 cited

Search for Anomalous Production of Diphoton Events with Missing Transverse Energy at CDF and Limits on Gauge-Mediated Supersymmetry-Breaking Models

CDF Collaboration

We present the results of a search for anomalous production of diphoton events with large missing transverse energy using the Collider Detector at Fermilab. In 202 $\invpb$ of $\pp…

hep-ex2004★ 252 cited

Measurement of the ttbar Production Cross Section in ppbar Collisions at sqrt{s}=1.96 TeV using Lepton + Jets Events with Secondary Vertex b-tagging

CDF Collaboration

We present a measurement of the ttbar production cross section using events with one charged lepton and jets from ppbar collisions at a center-of-mass energy of 1.96 TeV. In these…

hep-ex2004★ 31 cited

Search for Excited and Exotic Electrons in the e-gamma Decay Channel in p-pbar Collisions at sqrt(s) = 1.96 TeV

D. Acosta

We present a search for excited and exotic electrons (e*) decaying to an electron and a photon, both with high transverse momentum. We use 202/pb of data collected in p-pbar collis…

hep-ex2004★ 38 cited

Measurement of and Production in Collisions at = 1.96 TeV

CDF Collaboration

The Standard Model predictions for and production are tested using an integrated luminosity of 200 pb of \ppbar collision data collected at the Collider Detector a…

hep-ex2004★ 12 cited

A Study of Strange Particles Produced in Neutrino Neutral Current Interactions in the NOMAD Experiment

NOMAD Collaboration

Results of a detailed study of strange particle production in neutrino neutral current interactions are presented using the data from the NOMAD experiment. Integral yields of neutr…

hep-ex2004★ 34 cited

Measurement of the B0 -> K2*(1430)0 gamma and B+ -> K2*(1430)+ gamma branching fractions

B. Aubert

We have investigated the exclusive, radiative B meson decays to K2*(1430) in 89* 10^6 BBbar events with the BaBar detector at the PEP-II storage ring. We measure the branching frac…

hep-ex2004★ 31 cited

Measurement of the ttbar Production Cross Section in ppbar Collisions at sqrt(s) = 1.96 TeV Using Kinematic Fitting of -tagged Lepton+Jet Events

CDF collaboration

We report a measurement of the ttbar production cross section using the CDF II detector at the Fermilab Tevatron. The data consist of events with an energetic electron or muon, mis…

hep-ex2004★ 104 cited

Improved Measurement of CP Asymmetries in B0 -> (ccbar)K0(*) Decays

B. Aubert, BABAR Collaboration

We present results on time-dependent CP asymmetries in neutral B decays to several CP eigenstates. The measurements use a data sample of about 227 million Upsilon(4S) -> BBbar deca…

hep-ex2004★ 9 cited

Measurement of the Branching Fractions for Inclusive and Decays to Flavor-tagged , and

B. Aubert, BABAR collaboration

We report on the inclusive branching fractions of and of mesons decaying to , , , , , , ${Λ_c^+…