activity
19982008
most citedObservation of a Single-Spin Azimuthal Asymmetry in Semi-Inclusive Pion Electro-Production

293 citations · 1.3k across the 15 of their papers we have counts for

collaborators

15 papers

nucl-ex2008

Virtual Compton Scattering and Neutral Pion Electroproduction in the Resonance Region up to the Deep Inelastic Region at Backward Angles

G. Laveissière

We have made the first measurements of the virtual Compton scattering (VCS) process via the H exclusive reaction in the nucleon resonance region, at backward angles. Resu…

nucl-ex2005★ 37 cited

Recoil Polarization Measurements for Neutral Pion Electroproduction at Q^2=1 (GeV/c)^2 Near the Delta Resonance

J. J. Kelly

We measured angular distributions of differential cross section, beam analyzing power, and recoil polarization for neutral pion electroproduction at Q^2 = 1.0 (GeV/c)^2 in 10 bins…

hep-ex2004

Virtual Compton Scattering in the Resonance Region Up to the Deep Inelastic Region at Backward Angles and Momentum Transfer Squared of Q**2=1.0 GeV**2

G. Laveissiere

We have made the first measurements of the virtual Compton scattering process via the e p -> e p gamma exclusive reaction at Q**2 = 1 GeV**2 in the nucleon resonance region. The cr…

nucl-ex2003★ 30 cited

Backward electroproduction of pi0 mesons on protons in the region of nucleon resonances at four momentum transfer squared Q**2 = 1.0 GeV**2

G. Laveissiere

Exclusive electroproduction of pi0 mesons on protons in the backward hemisphere has been studied at Q**2 = 1.0 GeV**2 by detecting protons in the forward direction in coincidence w…

nucl-ex2002★ 84 cited

The Q^2 evolution of the generalized Gerasimov-Drell-Hearn integral for the neutron using a He-3 target

M. Amarian

We present data on the inclusive scattering of polarized electrons from a polarized He-3 target at energies from 0.862 to 5.06 GeV, obtained at a scattering angle of 15.5 degrees.…

physics.ins-det2001★ 110 cited

The HERMES Dual-Radiator Ring Imaging Cerenkov Detector

N. Akopov

The construction and use of a dual radiator Ring Imaging Cerenkov(RICH) detector is described. This instrument was developed for the HERMES experiment at DESY which emphasizes meas…

nucl-ex2000★ 108 cited

New Measurement of Parity Violation in Elastic Electron-Proton Scattering and Implications for Strange Form Factors

HAPPEX collaboration, K. A. Aniol

We have measured the parity-violating electroweak asymmetry in the elastic scattering of polarized electrons from the proton. The result is A = -15.05 +- 0.98(stat) +- 0.56(syst) p…

hep-ex1999★ 71 cited

Nuclear Effects on R = sigma_L / sigma_T in Deep-Inelastic Scattering

K. Ackerstaff

Cross section ratios for deep-inelastic scattering from 14N and 3He with respect to 2H have been measured by the HERMES experiment at DESY using a 27.5 GeV positron beam. The data…

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…

nucl-ex1998★ 97 cited

Large Momentum Transfer Measurements of the Deuteron Elastic Structure Function A(Q^2) at Jefferson Laboratory

The Jefferson Lab Hall A Collaboration, L. C Alexa

The deuteron elastic structure function A(Q^2) has been extracted in the Q^2 range 0.7 to 6.0 (GeV/c)^2 from cross section measurements of elastic electron-deuteron scattering in c…

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★ 55 cited

Determination of the Deep Inelastic Contribution to the Generalised Gerasimov-Drell-Hearn Integral for the Proton and Neutron

K. Ackerstaff

The virtual photon absorption cross section differences [sigma_1/2-sigma_3/2] for the proton and neutron have been determined from measurements of polarised cross section asymmetri…

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…