The distribution of hadrons produced in deeply inelastic electron–proton collisions depends on the azimuthal angle between lepton scattering plane and hadron production plane in the photon-proton centre-of-mass frame. In addition to the well known up-down asymmetry induced by the azimuthal dependence of the Born level subprocess, there is also a non-vanishing left-right asymmetry, provided the ...

The role of gauge invariance in single-spin asymmetries. The Sivers single-spin asymmetry in photon-jet production. DESY-07-028 (2007), hep-ph/0703153. Single-transverse spin asymmetry in dijet correlations at hadron colliders. Gluonic pole cross-sections and single spin asymmetries in hadron-hadron scattering. JHEP 02, 029 (2007), hep-ph/0609206. The construction of gauge-links in arbitrary ha...

We investigate hadron attenuation in deep-inelastic lepton scattering off complex nuclei in the kinematic regime of the HERMES experiment. Our transport theoretical simulations reveal strong prehadronic final state interactions of the reaction products with the surrounding nuclear medium early after the initial γ∗N interaction has taken place. In this work we compare our model results with the ...

In the present work, $k_T$-factorization formalism is applied to compute exclusive dilepton production by timelike Compton scattering (TCS) in $eA$, $pA$ and $AA$ collisions. The nuclear effects are investigated considering heavy light ions. cross section terms of invariant mass rapidity distribution lepton pair shown. analysis done for electron-ion collisions at Large Hadron-Electron Collider ...

Hadron production in lepton-nucleus deep inelastic scattering is studied in an absorption model. In the proposed model, the early stage of hadronization in the nuclear medium is dominated by prehadron formation and absorption, controlled by flavor-dependent formation lengths and absorption cross sections. Computations for hadron multiplicity ratios are presented and compared with the HERMES exp...

Understanding hadronic interactions at high energies represents a very important ingredient for modeling high energy cosmic ray air showers. In this paper, we present a new approach to simulate hadronic interactions, including hadron-hadron, hadron-nucleus, and nucleus-nucleus scattering, in the energy range roughly between 10 11 and 10 17 eV. Such collisions are very complex, being composed of...