Longitudinal broadening of near-side jets due to parton cascade G. L. Ma, S. Zhang, Y. G. Ma, X. Z. Cai, J. H. Chen and C. Zhong Eur. Phys. J. C, 57 3 (2008) 589-593 Published online: 23 August 2008 DOI: 10.1140/epjc/s10052-008-0691-6