The effect of minijet on hadron spectra and azimuthal anisotropy in heavy-ion collisions

Abstract

Here I review the transverse momentum distributions of identified hadrons produced in Au-Au collisions at RHIC and Pb-Pb collisions at LHC in the framework of recombination model. Minijets play an important role in generating shower partons in the intermediate $p_T$ region. At LHC, the resultant soft shower partons are even found to dominate over the thermal partons in the non-strange sector. The azimuthal anisotropy of the produced hadrons could also be explained as the consequence of the effects of minijets. Harmonic analysis of the $\varphi$ dependence leads to $v_n(p_T,b)$ that can be well produced without reference to flow.

Comments: 12 pages, 6 figures. arXiv admin note: text overlap with arXiv:1406.5733