activity
19982002
most citedMeasurement of the Beam-Spin Azimuthal Asymmetry Associated with Deeply-Virtual Compton Scattering

312 citations · 1.6k across the 12 of their papers we have counts for

collaborators

12 papers

hep-ex2002★ 71 cited

Erratum to: "Nuclear Effects on R=σ_L/σ_T in Deep-Inelastic Scattering" Phys.Lett. B475(2000)386

HERMES Collaboration, A. Airapetian

This erratum revokes the main conclusion of a Letter that reported measurements of cross sections for deep-inelastic scattering (DIS) of leptons on He and N targets, exp…

hep-ex2001★ 312 cited

Measurement of the Beam-Spin Azimuthal Asymmetry Associated with Deeply-Virtual Compton Scattering

HERMES Collaboration, A. Airapetian

The beam-spin asymmetry in hard electroproduction of photons has been measured for the first time. The data have been accumulated by the HERMES experiment at DESY using the HERA 27…

hep-ex2001★ 176 cited

Single-spin Azimuthal Asymmetries in Electroproduction of Neutral Pions in Semi-inclusive Deep-inelastic Scattering

HERMES Collaboration, A. Airapetian

A single-spin asymmetry in the azimuthal distribution of neutral pions relative to the lepton scattering plane has been measured for the first time in deep-inelastic scattering of…

hep-ex2001★ 17 cited

Double-Spin Asymmetry in the Cross Section for Exclusive rho^0 Production in Lepton-Proton Scattering

HERMES Collaboration, A. Airapetian

Evidence for a positive longitudinal double-spin asymmetry <A_1^rho> = 0.24 +-0.11 (stat) +-0.02 (syst) in the cross section for exclusive diffractive rho^0(770) vector meson produ…

hep-ex2000★ 24 cited

The Q^2-dependence of the Generalised Gerasimov-Drell-Hearn Integral for the Proton

A. Airapetian

The dependence on Q^2 (the negative square of the 4-momentum of the exchanged virtual photon) of the generalised Gerasimov-Drell-Hearn integral for the proton has been measured in…

hep-ex1999★ 44 cited

Measurement of Longitudinal Spin Transfer to Lambda Hyperons in Deep-Inelastic Lepton Scattering

HERMES Collaboration, A. Airapetian

Spin transfer in deep-inelastic Lambda electroproduction has been studied with the HERMES detector using the 27.6 GeV polarized positron beam in the HERA storage ring. For an avera…

hep-ex1999★ 293 cited

Observation of a Single-Spin Azimuthal Asymmetry in Semi-Inclusive Pion Electro-Production

A. Airapetian

Single-spin asymmetries for semi-inclusive pion production in deep-inelastic scattering have been measured for the first time. A significant target-spin asymmetry of the distributi…

hep-ex1999★ 165 cited

Flavor Decomposition of the Polarized Quark Distributions in the Nucleon from Inclusive and Semi-inclusive Deep-inelastic Scattering

K. Ackerstaff, The HERMES Collaboration

Spin asymmetries of semi-inclusive cross sections for the production of positively and negatively charged hadrons have been measured in deep-inelastic scattering of polarized posit…

hep-ex1998★ 57 cited

Observation of a Coherence Length Effect in Exclusive Rho^0 Electroproduction

K. Ackerstaff

Exclusive incoherent electroproduction of the rho^0(770) meson from 1H, 2H, 3He, and 14N targets has been studied by the HERMES experiment at squared four-momentum transfer Q**2>0.…

hep-ex1998★ 235 cited

Measurement of the Proton Spin Structure Function g1p with a Pure Hydrogen Target

A. Airapetian

A measurement of the proton spin structure function g1p(x,Q^2) in deep-inelastic scattering is presented. The data were taken with the 27.6 GeV longitudinally polarised positron be…

hep-ex1998★ 195 cited

The Flavor Asymmetry of the Light Quark Sea from Semi-inclusive Deep-inelastic Scattering

K. Ackerstaff

The flavor asymmetry of the light quark sea of the nucleon is determined in the kinematic range 0.02<x<0.3 and 1 GeV^2<Q^2<10 GeV^2, for the first time from semi-inclusive deep-ine…

hep-ex1998★ 20 cited

Beam-Induced Nuclear Depolarisation in a Gaseous Polarised Hydrogen Target

K. Ackerstaff

Spin-polarised atomic hydrogen is used as a gaseous polarised proton target in high energy and nuclear physics experiments operating with internal beams in storage rings. When such…