Hadronization geometry from net-charge angular correlations on momentum subspace ($η,φ$) in Au-Au collisions at $\sqrt{s_{NN}} = 130$ GeV

Details Hadronization geometry from net-charge angular correlations on momentum subspace ($η,φ$) in Au-Au collisions at $\sqrt{s_{NN}} = 130$ GeV Hadronization geometry from net-charge angular correlations on momentum subspace ($η,φ$) in Au-Au collisions at $\sqrt{s_{NN}} = 130$ GeV

2004-06-30

arxiv.org/abs/nucl-ex/0406035v5

Phys.Lett.B634:347-355,2006

Physics

Nuclear Physics

Nuclear Experiment

8 pages, 4 figures

Scientific paper

10.1016/j.physletb.2006.01.061

We present the first measurements of charge-dependent correlations on angular difference variables $\eta_1 - \eta_2$ (pseudorapidity) and $\phi_1 - \phi_2$ (azimuth) for primary charged hadrons with transverse momentum $0.15 \leq p_t \leq 2$ GeV/$c$ and $|\eta| \leq 1.3$ from Au-Au collisions at $\sqrt{s_{NN}} = 130$ GeV. We observe correlation structures not predicted by theory but consistent with evolution of hadron emission geometry with increasing centrality from one-dimensional fragmentation of color strings along the beam direction to an at least two-dimensional hadronization geometry along the beam and azimuth directions of a hadron-opaque bulk medium.

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