Double hadron leptoproduction in the nuclear medium
Abstract
First measurement of double-hadron production in deep-inelastic scattering has been measured with the HERMES spectrometer at HERA using a 27.6 GeV positron beam with deuterium, nitrogen, krypton and xenon targets. The influence of the nuclear medium on the ratio of double-hadron to single-hadron yields has been investigated. Nuclear effects are clearly observed but with substantially smaller magnitude and reduced -dependence compared to previously measured single-hadron multiplicity ratios. The data are in fair agreement with models based on partonic or pre-hadronic energy loss, while they seem to rule out a pure absorptive treatment of the final state interactions. Thus, the double-hadron ratio provides an additional tool for studying modifications of hadronization in nuclear matter.
Cite
@article{arxiv.hep-ex/0510030,
title = {Double hadron leptoproduction in the nuclear medium},
author = {The HERMES Collaboration and A. Airapetian},
journal= {arXiv preprint arXiv:hep-ex/0510030},
year = {2012}
}