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7 papers · 2 filters
Muon Pair Production in ep Collisions at HERA
H1 Collaboration
Cross sections for the production of two isolated muons up to high di-muon masses are measured in ep collisions at HERA with the H1 detector in a data sample corresponding to an in…
Quark fragmentation to , , , and in the nuclear environment
HERMES collaboration, A. Airapetian
The influence of the nuclear medium on lepto-production of hadrons was studied in the HERMES experiment at DESY in semi-inclusive deep-inelastic scattering of 27.6 GeV positrons of…
Flavor decomposition of the sea quark helicity distributions in the nucleon from semi-inclusive deep-inelastic scattering
HERMES collaboration, A. Airapetian
Double-spin asymmetries of semi-inclusive cross sections for the production of identified pions and kaons have been measured in deep-inelastic scattering of polarized positrons on…
Diffractive Photoproduction of J/psi Mesons with Large Momentum Transfer at HERA
H1 Collaboration
The diffractive photoproduction of J/psi mesons is measured with the H1 detector at the ep collider HERA using an integrated luminosity of 78 pb^-1. The differential cross section…
Search for new physics in e^\pm q contact interactions at HERA
H1 Collaboration
Deep-inelastic e^\pm p scattering at high squared momentum transfer Q^2 up to 30000 GeV^2 is used to search for eq contact interactions associated to scales far beyond the HERA cen…
Measurement of deeply virtual Compton scattering at HERA
ZEUS Collaboration
The cross section for deeply virtual Compton scattering in the reaction ep -> e gamma p has been measured with the ZEUS detector at HERA using integrated luminosities of 95.0 pb-1…
Isolated electrons and muons in events with missing transverse momentum at HERA
H1 Collaboration
A search for events with a high energy isolated electron or muon and missing transverse momentum has been performed at the electron-proton collider HERA using an integrated luminos…