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19912026
Showing 2004 · hep-exShow all

28 papers · 2 filters

hep-ex2004★ 1 cited

Future Muon Dipole Moment Measurements

B. Lee Roberts

From the famous experiments of Stern and Gerlach to the present, measurements of magnetic dipole moments, and searches for electric dipole moments of ``elementary'' particles have…

hep-ex2004★ 12 cited

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…

hep-ex2004

CDF and D0 top quark cross section measurements

Lars Sonnenschein

Preliminary results of ttbar cross section measurements and single top exclusion limits of the Tevatron experiments CDF and D0 are presented. The different measurements are based o…

hep-ex2004★ 456 cited

Evidence for muon neutrino oscillation in an accelerator-based experiment

K2K Collaboration, E. Aliu

We present results for muon neutrino oscillation in the KEK to Kamioka (K2K) long-baseline neutrino oscillation experiment. K2K uses an accelerator-produced muon neutrino beam with…

hep-ex2004

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…

hep-ex2004★ 24 cited

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…

hep-ex2004★ 32 cited

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…

hep-ex2004★ 26 cited

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…

hep-ex2004★ 21 cited

Measurement of the Lambda^0_b lifetime in the decay Lambda^0_b -> J/psi Lambda^0 with the D0 Detector

D0 Collaboration, V. M. Abazov

We present measurements of the Lambda^0_b lifetime in the exclusive decay channel Lambda^0_{b}->J/psi Lambda^0, with J/psi to mu+ mu- and Lambda^0 to p pi-, the B^0 lifetime in the…

hep-ex2004★ 5 cited

Direct Measurements of A_b and A_c using Vertex/Kaon Charge Tags at SLD

SLD Collaboration, K. Abe

Exploiting the manipulation of the SLC electron-beam polarization, we present precise direct measurements of the parity violation parameters A_c and A_b in the Z boson - c quark an…

hep-ex2004★ 68 cited

A Search for the Flavor-Changing Neutral Current Decay B0_s -> mu^+mu^- in pp(bar) Collisions at \sqrt{s} = 1.96 TeV with the D0 Detector

D0 Collaboration, V. M. Abazov

We present the results of a search for the flavor-changing neutral current decay B0_s -> mu+ mu- using a data set with integrated luminosity of 240 pb^{-1} of pp(bar) collisions at…

hep-ex2004★ 94 cited

Measurement of Dijet Azimuthal Decorrelations at Central Rapidities in pp-bar Collisions at sqrt(s)=1.96 TeV

D0 Collaboration, V. M. Abazov

Correlations in the azimuthal angle between the two largest transverse momentum jets have been measured using the D0 detector in pp-bar collisions at a center-of-mass energy sqrt(s…

hep-ex2004

A method of extracting the mass of the top quark in the di-lepton channel using the D0 Detector

Sarosh N. Fatakia

We present a method for extracting the mass of the top quark from the di-lepton decays of top anti-top quark pairs. In this decay channel two neutrinos remain undetected. Extractio…

hep-ex2004★ 18 cited

Measurement of the B^0_s lifetime in the exclusive decay channel B^0_s -> J/psi phi

D0 Collaboration, V. M. Abazov

Using the exclusive decay B^0_s -> J/psi (mu+mu-) phi(K+K-), we report the most precise single measurement of the B^0_s lifetime. The data sample corresponds to an integrated lumin…

hep-ex2004★ 63 cited

Study of the Processes e+ e- --> eta gamma, e+ e- --> pi0 gamma --> 3 gamma in the c.m. Energy Range 600--1380 MeV at CMD-2

CMD2 Collaboration

The processes e+ e- --> eta gamma, e+ e- --> pi0 gamma --> 3 gamma have been studied in the c.m. energy range 600--1380 MeV with the CMD-2 detector. The following branching ratios…

hep-ex2004★ 29 cited

Search for Supersymmetry with Gauge-Mediated Breaking in Diphoton Events at D0

D0 Collaboration, V. M. Abazov

We report the results of a search for supersymmetry (SUSY) with gauge-mediated breaking in the missing transverse energy distribution of inclusive diphoton events using 263 pb$^{-1…

hep-ex2004★ 66 cited

Measurement of single pi0 production in neutral current neutrino interactions with water by a 1.3 GeV wide band muon neutrino beam

K2K Collaboration, S. Nakayama

Neutral current single pi0 production induced by neutrinos with a mean energy of 1.3 GeV is measured at a 1000 ton water Cherenkov detector as a near detector of the K2K long basel…

hep-ex2004★ 293 cited

A Precision Measurement of the Mass of the Top Quark

D0 Collaboration

The Standard Model of particle physics contains about two dozen parameters - such as particle masses - whose origins are still unknown and cannot be predicted, but whose values are…

hep-ex2004★ 549 cited

Observation and Properties of the X(3872) Decaying to J/psi pi+ pi- in p-p(bar) Collisions at sqrt(s) = 1.96 TeV

D0 Collaboration, V. M. Abazov

We report the observation of the X(3872) in the J/psi pi+pi- channel, with J/psi decaying to mu+mu- in p-p(bar) collisions at sqrt(s) = 1.96 TeV. Using approximately 230 pb^-1 of d…

hep-ex2004★ 61 cited

Helicity of the W Boson in Lepton+Jets ttbar Events

D0 Collaboration

We examine properties of ttbar candidates events in lepton+jets final states to establish the helicities of the W bosons in t->W+b decays. Our analysis is based on a direct calcula…

hep-ex2004★ 611 cited

Evidence for an oscillatory signature in atmospheric neutrino oscillation

Kamiokande Collaboration, Y. Ashie

Muon neutrino disappearance probability as a function of neutrino flight length L over neutrino energy E was studied. A dip in the L/E distribution was observed in the data, as pre…

hep-ex2004★ 12 cited

Search for Pair Production of Light Scalar Top Quarks in p-pbar Collisions at sqrt{s}=1.8 TeV

Carl Lundstedt, Dan Claes

Using 85.2 +/- 3.6 pb^-1 of p-pbar collisions collected at sqrt(s)=1.8 TeV with the D0 detector at Fermilab's Tevatron Collider, we present the results of a search for direct pair…

hep-ex2004★ 38 cited

Total Cross Section of the Process e+e- -> pi+pi-pi+pi- in the C.M.Energy Range 980-1380 MeV

R. R. Akhmetshin

The e+e- -> pi+pi-pi+pi- cross section has been measured using 5.8/pb of integrated luminosity collected with the CMD-2 detector at the VEPP-2M collider. Analysis of the data with…

hep-ex2004★ 68 cited

Search for Doubly-charged Higgs Boson Pair Production in the Decay to mu+mu+mu-mu- in p pbar Collisions at s**1/2=1.96 TeV

D0 Collaboration, V. M. Abazov

A search for pair production of doubly-charged Higgs bosons in the process p pbar to H++H-- to mu+mu+mu-mu- is performed with the D0 Run II detector at the Fermilab Tevatron. The a…