### Multidimensional study of the hadron attenuation at HERMES.

Gevorg Karyan
Hadron multiplicity ratios in semi-inclusive deep-inelastic scattering have been measured on neon, krypton and xenon targets relative to deuterium using 27.6 GeV positron or electron beam at the HERMES experiment. They are presented for pions ($\pi^{+}$, $\pi^{-}$), kaons ($K^{+}$, $K^{-}$), protons and anti-protons as a function of the virtual photon energy $\nu$, its virtuality $Q^{2}$, the fractional hadron energy $z$ and the transverse component of hadron momentum $p_{t}$ with respect to the direction of the...