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19912026
Showing 2009 · hep-exShow all

20 papers · 2 filters

hep-ex2009★ 85 cited

Transverse momentum dependence of J/psi polarization at midrapidity in p+p collisions at sqrt(s)=200 GeV

PHENIX Collaboration, A. Adare

We report the measurement of the transverse momentum dependence of inclusive J/psi polarization in p+p collisions at sqrt(s)=200 GeV performed by the PHENIX Experiment at RHIC. The…

hep-ex2009★ 35 cited

A Measurement of Coherent Neutral Pion Production in Neutrino Neutral Current Interactions in NOMAD

C. T. Kullenberg, S. R. Mishra

We present a study of exclusive neutral pion production in neutrino-nucleus Neutral Current interactions using data from the NOMAD experiment at the CERN SPS. The data correspond t…

hep-ex2009★ 8 cited

Double Helicity Dependence of Jet Properties from Dihadrons in Longitudinally Polarized p+p Collisions at sqrt(s) = 200 GeV

PHENIX Collaboration

It has been postulated that partonic orbital angular momentum can lead to a significant double-helicity dependence in the net transverse momentum of Drell-Yan dileptons produced in…

hep-ex2009★ 95 cited

Measurement of the W boson mass

The D0 Collaboration, V. Abazov

We present a measurement of the W boson mass in W -> ev decays using 1 fb^-1 of data collected with the D0 detector during Run II of the Fermilab Tevatron collider. With a sample o…

hep-ex2009★ 2 cited

Measurement of the longitudinal spin structure of the proton by COMPASS

A. Korzenev

The inclusive A_1,p and hadron double-spin asymmetries A_p^pi+, A_p^pi-, A_p^K+, A_p^K- measured at COMPASS (CERN SPS) in deep-inelastic scattering of a polarized muon beam off a p…

hep-ex2009★ 3 cited

Correlations between Polarisation States of W Particles in the Reaction e-e+ -> W-W+ at LEP2 Energies 189-209 GeV

The DELPHI Collaboration, J. Abdallah

In a study of the reaction e-e+ -> W-W+ with the DELPHI detector, the probabilities of the two W particles occurring in the joint polarisation states transverse-transverse (TT), lo…

hep-ex2009★ 41 cited

Photoproduction of meson pairs on the proton

M. Battaglieri, R. De Vita, A. P. Szczepaniak

The exclusive reaction was studied in the photon energy range 3.0 - 3.8 GeV and momentum transfer range GeV. Data were collected with the CLAS d…

hep-ex2009★ 47 cited

Measurement of the Longitudinal Spin Transfer to Lambda and Anti-Lambda Hyperons in Polarised Muon DIS

The COMPASS Collaboration, M. Alekseev

The longitudinal polarisation transfer from muons to lambda and anti-lambda hyperons, D_LL, has been studied in deep inelastic scattering off an unpolarised isoscalar target at the…

hep-ex2009★ 43 cited

Gluon Polarisation in the Nucleon and Longitudinal Double Spin Asymmetries from Open Charm Muoproduction

COMPASS Collaboration, M. Alekseev

The gluon polarisation in the nucleon has been determined by detecting charm production via D0 meson decay to charged K and pi in polarised muon scattering off a longitudinally pol…

hep-ex2009★ 44 cited

Beam-Recoil Polarization Transfer in the Nucleon Resonance Region in the Exclusive and Reactions at CLAS

D. S. Carman, B. A. Raue

Beam-recoil transferred polarizations for the exclusive reactions have been measured using the CLAS spectrometer at Jefferson Laboratory. New mea…

hep-ex2009★ 96 cited

Measurement of Bottom versus Charm as a Function of Transverse Momentum with Electron-Hadron Correlations in p+p Collisions at sqrt(s)=200 GeV

PHENIX Collaboration, A. Adare

The momentum distribution of electrons from semi-leptonic decays of charm and bottom for mid-rapidity |y|<0.35 in p+p collisions at sqrt(s)=200 GeV is measured by the PHENIX experi…

hep-ex2009★ 18 cited

Search for the standard model Higgs boson in tau final states

D0 Collaboration, V. Abazov

We present a search for the standard model Higgs boson using hadronically decaying tau leptons, in 1 inverse femtobarn of data collected with the D0 detector at the Fermilab Tevatr…

hep-ex2009★ 6 cited

Inclusive Photoproduction of rho^0, K^{*0} and phi Mesons at HERA

H1 Collaboration

Inclusive non-diffractive photoproduction of rho(770)^0, K^*(892)^0 and phi(1020) mesons is investigated with the H1 detector in ep collisions at HERA. The corresponding average γp…

hep-ex2009★ 2 cited

Di-jet production in gamma-gamma collisions at LEP2

The DELPHI Collaboration, J. Abdallah

The production of two high-p_T jets in the interactions of quasi-real photons in e+e- collisions at sqrt{s_ee} from 189 GeV to 209 GeV is studied with data corresponding to an inte…

hep-ex2009★ 22 cited

Observation of the Muon Inner Bremsstrahlung at LEP1

The DELPHI Collaboration, J. Abdallah

Muon bremsstrahlung photons converted in front of the DELPHI main tracker (TPC) in dimuon events at LEP1 were studied in two photon kinematic ranges: 0.2 < E_gamma <= 1 GeV and tra…

hep-ex2009★ 73 cited

Search for one large extra dimension with the DELPHI detector at LEP

DELPHI Collaboration, J. Abdallah

Single photons detected by the DELPHI experiment at LEP2 in the years 1997-2000 are reanalysed to investigate the existence of a single extra dimension in a modified ADD scenario w…

hep-ex2009★ 18 cited

A Study of b bbar Production in e+e- Collisions at sqrt(s) = 130-207 GeV

DELPHI Collaboration, J. Abdallah

Measurements are presented of R_b, the ratio of the b bbar cross-section to the q qbar cross-section in e+e- collisions, and the forward-backward asymmetry A^b_FB at twelve energy…

hep-ex2009★ 228 cited

A study of quasi-elastic muon neutrino and antineutrino scattering in the NOMAD experiment

NOMAD Collaboration, V. Lyubushkin

We have studied the muon neutrino and antineutrino quasi-elastic (QEL) scattering reactions ( and ) using a set of experimental data collected by…

hep-ex2009★ 20 cited

Search for admixture of scalar top quarks in the ttbar lepton+jets final state at sqrt(s)=1.96 TeV

D0 Collaboration, V. Abazov

A search for pair production of the lightest supersymmetric partner of the top quark is performed in the lepton+jets channel using 0.9 fb-1 of data collected by the D0 experiment.…

hep-ex2009★ 34 cited

Measurement of the ttbar production cross section and top quark mass extraction using dilepton events in ppbar collisions

The D0 Collaboration, V. Abazov

We present a measurement of the top quark pair production cross section in ppbar collisions at \sqrt{s}=1.96 TeV using approximately 1 fb^{-1} of data collected with the D0 detecto…