Correlations in ultra-relativistic nuclear collisions with strings

Abstract

While string models describe initial state radiation in ultra-relativistic nuclear collisions well, they mainly differ in their end-point positions of the strings in spatial rapidity. We present a generic model where wounded constituents are amended with strings whose both end-point positions fluctuate and analyze semi-analytically various scenarios of string-end-point fluctuations. In particular we constrain the different cases to experimental data on rapidity spectra from collisions at $\sqrt{s_{\mathrm{NN}}}=200$~GeV, and explore their respective two-body correlations, which allows to partially discriminate the possible solutions.

Comments: Presented at Excited QCD 2019, Schladming, Austria; Supported by Polish National Science Center grant 2015/19/B/ST/00937