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Showing 2006 · hep-exShow all

49 papers · 2 filters

hep-ex2006★ 16 cited

Measurement of the ppbar to ttbar production cross section at sqrt(s)=1.96 TeV in the fully hadronic decay channel

D0 Collaboration, V. Abazov

A measurement of the top quark pair production cross section in proton anti-proton collisions at an interaction energy of sqrt(s)=1.96 TeV is presented. This analysis uses 405 pb-1…

hep-ex2006★ 13 cited

Search for techniparticles in e +jets events at D0

D0 Collaboration, V. Abazov

We search for the technicolor process ppbar -> rho_T/omega_T ->W+pi_T in events containing one electron and two jets, in data corresponding to an integrated luminosity of 390 pb-1,…

hep-ex2006★ 52 cited

Confirmation of a pi_1^0 Exotic Meson in the ηπ^0 System

G. S. Adams, T. Adams, Z. Bar-Yam +49

The exclusive reaction , at 18 GeV has been studied with a partial wave analysis on a sample of 23~492 events from BNL experiment…

hep-ex2006★ 9 cited

Search for single production of scalar leptoquarks in p\bar{p} collisions decaying into muons and quarks with the D0 detector

D0 Collaboration, V. Abazov

We report on a search for second generation leptoquarks LQ_2 which decay into a muon plus quark in p\bar{p} collisions at a center-of-mass energy of sqrt{s} = 1.96 TeV in the D0 de…

hep-ex2006★ 186 cited

J/psi Production vs Transverse Momentum and Rapidity in p+p Collisions at sqrt(s) = 200 GeV

PHENIX Collaboration, A. Adare

J/Psi production in p+p collisions at sqrt(s) = 200 GeV has been Measured in the PHENIX experiment at the Relativistic Heavy Ion Collider (RHIC) over a rapidity range of -2.2 < y <…

hep-ex2006★ 36 cited

A Search for the Rare Leptonic Decays B+ -> mu+ nu and B+ -> e+ nu

N. Satoyama

We present a search for the decays B+ -> mu+ nu_mu and B+ -> e+ nu_e in a 253 fb-1 data sample collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energ…

hep-ex2006★ 55 cited

Measurement of the ttbar production cross section in pbarp collisions at sqrt(s) = 1.96 TeV using secondary vertex b tagging

D0 Collaboration, V. Abazov

We report a new measurement of the ttbar production cross section in pbarp collisions at a center-of-mass energy of 1.96 TeV using events with one charged lepton (electron or muon)…

hep-ex2006★ 33 cited

Single Transverse-Spin Asymmetry in Very Forward and Very Backward Neutral Particle Production for Polarized Proton Collisions at sqrt{s} = 200 GeV

Y. Fukao, M. Togawa, A. Bazilevsky +24

In the 2001-2002 running period of the Relativistic Heavy Ion Collider (RHIC), transversely polarized protons were accelerated to 100 GeV for the first time, with collisions at sqr…

hep-ex2006★ 60 cited

Measurement of the top quark mass in the lepton+jets final state with the matrix element method

D0 Collaboration, V. Abazov

We present a measurement of the top quark mass with the Matrix Element method in the lepton+jets final state. As the energy scale for calorimeter jets represents the dominant sourc…

hep-ex2006★ 24 cited

Measurement of the W boson helicity in top quark decay at D0

D0 Collaboration, V. M. Abazov

We present a measurement of the fraction f_+ of right-handed W bosons produced in top quark decays, based on a candidate sample of ttbar events in the l+jets and dilepton decay cha…

hep-ex2006★ 34 cited

Measurement of Bd mixing using opposite-side flavor tagging

D0 Collaboration, V. M. Abazov

We report on a measurement of the mixing frequency and the calibration of an opposite-side flavor tagger in the DØexperiment. Various properties associated with the qua…

hep-ex2006★ 39 cited

Measurement of Single Muons at Forward Rapidity in p+p Collisions at sqrt(s) = 200 GeV and Implications for Charm Production

PHENIX Collaboration, S. S. Adler

Muon production at forward rapidity (1.5 < |η| < 1.8) has been measured by the PHENIX experiment over the transverse momentum range 1 < p_T \le 3 GeV/c in sqrt(s) = 200 GeV p+p col…

hep-ex2006★ 142 cited

Measurement of direct photon production in p + p collisions at sqrt(s) = 200 GeV

PHENIX Collaboration, S. S. Adler

Cross sections for mid-rapidity production of direct photons in p+p collisions at the Relativistic Heavy Ion Collider (RHIC) are reported for 3 < p_T < 16 GeV/c. Next-to-leading or…

hep-ex2006★ 47 cited

Measurement of the CP-violation parameter of B^0 mixing and decay with pp(bar) -> mu mu X data

D0 Collaboration, V. Abazov

We measure the dimuon charge asymmetry A in pp(bar) collisions at a center of mass energy sqrt{s} = 1960 GeV. The data was recorded with the D0 detector and corresponds to an integ…

hep-ex2006★ 232 cited

Measurement of high-p_T Single Electrons from Heavy-Flavor Decays in p+p Collisions at sqrt(s) = 200 GeV

PHENIX Collaboration, A. Adare

The momentum distribution of electrons from decays of heavy flavor (charm and beauty) for midrapidity |y| < 0.35 in p+p collisions at sqrt(s) = 200 GeV has been measured by the PHE…

hep-ex2006★ 53 cited

Measurement of the top quark mass in the dilepton channel

D0 Collaboration, V. Abazov et al

We present a measurement of the top quark mass in the dilepton channel based on approximately 370/pb of data collected by the D0 experiment during Run II of the Fermilab Tevatron c…

hep-ex2006★ 27 cited

A study of gamma gamma -> Ks Ks production at energies of 2.4-4.0GeV at Belle

W. T. Chen

production in two-photon collisions has been studied using a 397.6 fb data sample collected with the Belle detector at the KEKB collider. For the first…

hep-ex2006★ 69 cited

A Search for Neutrinos from the Solar hep Reaction and the Diffuse Supernova Neutrino Background with the Sudbury Neutrino Observatory

The SNO Collaboration

A search has been made for neutrinos from the hep reaction in the Sun and from the diffuse supernova neutrino background (DSNB) using data collected during the first operational ph…

hep-ex2006★ 18 cited

The first observation of decay

Belle Collaboration

We present the first measurement of tau-decays to hadronic final states with a -meson. This is based on 401.4 fb of data accumulated at the Belle experiment. The branchin…

hep-ex2006★ 39 cited

Measurement of the ratios of the Z/G* + >= n jet production cross sections to the total inclusive Z/G* cross section in ppbar collisions at sqrt(s) = 1.96 TeV

D0 Collaboration, V. Abazov

We present a study of events with Z bosons and jets produced at the Fermilab Tevatron Collider in ppbar collisions at a center of mass energy of 1.96 TeV. The data sample consists…

hep-ex2006★ 170 cited

Longitudinal double-spin asymmetry and cross section for inclusive jet production in polarized proton collisions at sqrt(s) = 200 GeV

STAR Collaboration, B. I. Abelev

We report a measurement of the longitudinal double-spin asymmetry A_LL and the differential cross section for inclusive midrapidity jet production in polarized proton collisions at…

hep-ex2006★ 15 cited

Indication for scattering in collisions at 200 GeV

P. Fachini, R. S. Longacre, Z. Xu +1

A mass shift of about -40 MeV/ was measured in collisions at 200 GeV at RHIC. Previous mass shifts have been observed at CERN-LEBC-EHS a…

hep-ex2006★ 34 cited

Search for pair production of scalar bottom quarks in ppbar collisions at sqrt(s)=1.96 TeV

D0 Collaboration, V. M Abazov

A search for direct production of scalar bottom quarks (sb) is performed with 310 pb-1 of data collected by the DO experiment in ppbar collisions at sqrt(s)=1.96 TeV at the Fermila…

hep-ex2006★ 533 cited

Observation of muon neutrino disappearance with the MINOS detectors and the NuMI neutrino beam

MINOS Collaboration

This letter reports results from the MINOS experiment based on its initial exposure to neutrinos from the Fermilab NuMI beam. The rate and energy spectra of charged current muon ne…