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19912026
Showing 2008 · hep-exShow all

57 papers · 2 filters

hep-ex2008★ 25 cited

Search for anomalous top quark couplings with the D0 detector

D0 Collaboration, V. Abazov

Anomalous Wtb couplings modify the angular correlations of the top quark decay products and change the single top quark production cross section. We present limits on anomalous top…

hep-ex2008★ 28 cited

Measurement of the branching ratio and search for a CP violating asymmetry in the eta -> pi+pi-e+e-(gamma) decay at KLOE

KLOE Collaboration, F. Ambrosino, A. Antonelli +57

We have studied the eta->pi+pi-e+e-(gamma) decay using about 1.7 fb^-1 collected by the KLOE experiment at the DAFNE phi-factory. This corresponds to about 72 millions eta mesons p…

hep-ex2008★ 84 cited

First Study of Neutron Tagging with a Water Cherenkov Detector

Kamiokande Collaboration, H. Watanabe, H. Zhang

A first study of neutron tagging is conducted in Super--Kamiokande, a 50,000-ton water Cherenkov detector. The tagging efficiencies of thermal neutrons are evaluated in a 0.2 % GdC…

hep-ex2008★ 14 cited

Evidence for the decay B_s^0 --> D_s^(*)D_s^(*) and a measurement of Delta_Gamma_s^CP/Gamma_s

D0 Collaboration, V. M. Abazov

We search for the semi-inclusive process B_s^0 --> D_s^(*)D_s^(*) using 2.8 fb^-1 of ppbar collisions at s^(1/2) = 1.96 TeV recorded by the D0 detector operating at the Fermilab Te…

hep-ex2008★ 18 cited

Search for the K_S -> e+e- decay with the KLOE detector

The KLOE Collaboration, F. Ambrosino, A. Antonelli +63

We present the result of a direct search for the decay K_S -> e+e-, obtained with a sample of e+e- -> phi -> K_S K_L events produced at DAFNE, the Frascati phi-factory, for an inte…

hep-ex2008★ 36 cited

Search for the lightest scalar top quark in events with two leptons in ppbar collisions at sqrt(s)=1.96 TeV

D0 Collaboration, V. Abazov

We report results of a search for the pair production of the lightest supersymmetric partner of the top quark using 1 fb-1 of data collected by the D0 detector at a ppbar center-of…

hep-ex2008★ 14 cited

Search for neutral Higgs bosons at high tan(beta) in the b(h/H/A)->btautau channel

D0 Collaboration, V. Abazov

The first search in ppbar collisions at sqrt(s)=1.96 GeV for the production of neutral Higgs bosons in association with bottom quarks and decaying in two tau leptons is presented.…

hep-ex2008★ 108 cited

Inclusive cross section and double helicity asymmetry for pi^0 production in p+p collisions at sqrt(s) = 62.4 GeV

PHENIX Collaboration, A. Adare

The PHENIX experiment presents results from the RHIC 2006 run with polarized proton collisions at sqrt(s) = 62.4 GeV for inclusive pi^0 production at mid-rapidity. Unpolarized cros…

hep-ex2008★ 90 cited

The gluon spin contribution to the proton spin from the double helicity asymmetry in inclusive pi^0 production in polarized p+p collisions at sqrt(s)=200 GeV

PHENIX Collaboration, A. Adare

The double helicity asymmetry in neutral pion production for p_T = 1 to 12 GeV/c has been measured with the PHENIX experiment in order to access the gluon spin contribution, Delta-…

hep-ex2008★ 17 cited

Evidence of WW+WZ production with lepton + jets final states in proton-antiproton collisions at sqrt(s)=1.96 TeV

D0 Collaboration, V. M. Abazov

We present the first evidence of WW+WZ production with lepton+jets final states at a hadron collider. The data correspond to 1.07 inverse femtobarns of integrated luminosity collec…

hep-ex2008★ 19 cited

Measurement of the angular and lifetime parameters of the decays and

D0 Collaboration, V. Abazov

We present measurements of the linear polarization amplitudes and the strong relative phases that describe the flavor-untagged decays and $B_{s}^{0}\to J/ψ…

hep-ex2008★ 23 cited

Search for scalar leptoquarks and T-odd quarks in the acoplanar jet topology using 2.5 fb-1 of ppbar collision data at sqrt(s)=1.96 TeV

D0 Collaboration, V. Abazov

A search for new physics in the acoplanar jet topology has been performed in 2.5 fb-1 of data from ppbar collisions at sqrt(s)=1.96 TeV, recorded by the D0 detector at the Fermilab…

hep-ex2008★ 36 cited

Search for Large extra spatial dimensions in the dielectron and diphoton channels in collisions at 1.96 TeV

D0 Collaboration, V. Abazov

We report on a search for large extra spatial dimensions in the dielectron and diphoton channels using a data sample of 1.05 \invfb of \ppb collisions at a center-of-mass energy of…

hep-ex2008★ 62 cited

Search for charged massive long-lived particles with the D0 detector

D0 Collaboration, V. Abazov

We search for charged massive long-lived particles using 1.1 fb of data collected by the D0 detector at the Fermilab Tevatron Collider. Time-of-flight information…

hep-ex2008★ 32 cited

Search for pair production of second generation scalar leptoquarks

D0 Collaboration, V. M. Abazov

We report on a search for the pair production of second generation scalar leptoquarks (LQ) in ppbar collisions at the center of mass energy sqrt(s)=1.96 TeV using a data set corres…

hep-ex2008★ 23 cited

A search for associated W and Higgs Boson production in ppbar collisions at sqrt{s}=1.96 TeV

D0 Collaboration

We present results of a search for WH -> lepton neutrino b bbar production in ppbar collisions based on the analysis of 1.05 fb-1 of data collected by the D0 experiment at the Ferm…

hep-ex2008★ 32 cited

Measurement of sigma(ppbar -> Z + X) Br(Z -> tau+tau-) at sqrt(s)=1.96 TeV

D0 Collaboration, V. Abazov

We present a measurement of the cross section for Z boson production times the branching fraction to tau lepton pairs sigma(ppbar -> Z + X) Br(Z -> tau+ tau-) in proton-antiproton…

hep-ex2008★ 2 cited

A search for the standard model Higgs boson in the missing energy and acoplanar b-jet topology at sqrt(s) = 1.96 TeV

D0 Collaboration, V. Abazov

We report a search for the standard model Higgs boson in the missing energy and acoplanar b-jet topology, using an integrated luminosity of 0.93 inverse femtobarn recorded by the D…

hep-ex2008★ 92 cited

Observation of the doubly strange b baryon Omega_b-

D0 Collaboration, V. Abazov

We report the observation of the doubly strange b baryon Omega_b- in the decay channel Omega_b- to J/psi Omega-, with J/psi to mu+ mu- and Omega- to Lambda K-, in collis…

hep-ex2008★ 236 cited

New measurement of the K+ => pi+,nu,nubar branching ratio

E949 Collaboration

Three events for the decay K+ => pi+,nu,nubar have been observed in the pion momentum region below the K+ => pi+,pi0 peak, 140 < P_pi < 199 MeV/c, with an estimated background of 0…

hep-ex2008★ 62 cited

Measurement of differential Z/gamma*+jet+X cross sections in proton anti-proton collisions at sqrt{s}=1.96 TeV

D0 Collaboration, V. Abazov

We present new measurements of differential cross sections for Z/gamma*(->mumu)+jet+X production in a 1 fb-1 data sample collected with the D0 detector in proton anti-proton collis…

hep-ex2008★ 25 cited

Observation of ZZ production in ppbar collisions at sqrt(s) = 1.96 TeV

D0 Collaboration, V. Abazov

We present an observation for ZZ -> l+l-l'+l'- (l, l' = e or mu) production in ppbar collisions at a center-of-mass energy of sqrt(s) = 1.96 TeV. Using 1.7 fb-1 of data collected b…

hep-ex2008★ 11 cited

ZZ to llvv production in pp collisions at sqrt(s) = 1.96 TeV

D0 Collaboration, V. Abazov

We describe a search for Z boson pair production in pp collisions at sqrt(s)= 1.96 TeV with the D0 detector at the Fermilab Tevatron Collider using a data sample corresponding to a…

hep-ex2008★ 76 cited

Measurement of the electron charge asymmetry in ppbar->W+X->enu+X events at sqrt{s}=1.96 TeV

V. M. Abazov

We present a measurement of the electron charge asymmetry in ppbar->W+X->enu+X events at a center of mass energy of 1.96 TeV using 0.75 fb-1 of data collected with the D0 detector…