Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10725481 | Physics Letters B | 2006 | 9 Pages |
Abstract
We present the first measurements of charge-dependent correlations on angular difference variables η1âη2 (pseudorapidity) and Ï1âÏ2 (azimuth) for primary charged hadrons with transverse momentum 0.15⩽pt⩽2GeV/c and |η|⩽1.3 from Au-Au collisions at sNN=130GeV. 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.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
STAR Collaboration STAR Collaboration, J. Adams, M.M. Aggarwal, Z. Ahammed, J. Amonett, B.D. Anderson, D. Arkhipkin, G.S. Averichev, S.K. Badyal, Y. Bai, J. Balewski, O. Barannikova, L.S. Barnby, J. Baudot, S. Bekele, V.V. Belaga,