https://doi.org/10.1140/epjc/s2003-01289-x
theoretical physics
Quenching of hadron spectra in DIS on nuclear targets
ECT* and INFN, G.C. di Trento, Strada delle Tabarelle, 286, 38050, Villazzano (Trento), Italy
The multiple scatterings incurred by a hard quark produced in a nuclear medium induce the emission of soft gluons which carry a fraction of the quark energy and eventually affect the hadronization process. Here, the depletion of semi-inclusive hadron spectra in DIS on various nuclei (N, Ne, Cu, Kr) is computed as a function of $\nu$ and z to leading order in $\alpha_{\mathrm {s}}$ through medium-modified fragmentation functions. Using the transport coefficient $\hat{q}$ previously determined from Drell-Yan production, the predictions are found to be in good agreement with EMC and HERMES preliminary data. Calculations on Xe targets are also presented and discussed.
© Springer-Verlag, 2003
