Delta phi Delta eta correlations in central Au plus Au collisions at root S-NN = 200 GeV

作者：Adams J^*; Aggarwal M M; Ahammed Z; Amonett J; Anderson B D; Anderson M; Arkhipkin D; Averichev G S; Bai Y; Balewski J; Barannikova O; Barnby L S; Baudot J; Bekele S; Belaga V V; Bellingeri Laurikainen A; Bellwied R; Bezverkhny B I; Bharadwaj S; Bhasin A; Bhati A K; Bichsel H; Bielcik J; Bielcikova J; Bland L C; Blyth C O; Blyth S L; Bonner B E; Botje M; Bouchet J; Brandin A V; Bravar A; Bystersky M; Cadman R V

来源：Physical Review C, 2007, 75(3): 034901.

DOI：10.1103/PhysRevC.75.034901

We report charged particle pair correlation analyses in the space of Delta phi (azimuth) and Delta eta (pseudorapidity), for central Au+Au collisions at root s(NN)=200 GeV in the STAR detector. The analysis involves unlike-sign charged pairs and like-sign charged pairs, which are transformed into charge-dependent (CD) signals and charge-independent (CI) signals. We present detailed parametrizations of the data. A model featuring dense gluonic hot spots as first proposed by Van Hove predicts that the observables under investigation would have sensitivity to such a substructure should it occur, and the model also motivates selection of transverse momenta in the range 0.8 < p(t)< 2.0 GeV/c. Both CD and CI correlations of high statistical significance are observed, and possible interpretations are discussed.

• 出版日期2007-3
• 单位中国科学技术大学; 清华大学; 华中师范大学; 中国科学院上海应用物理研究所