High transverse momentum triggered correlations over a large pseudorapidity Acceptance in Au+Au Collisions at sNN=200GeV

B. Alver, B. B. Back, M. D. Baker, M. Ballintijn, D. S. Barton, R. R. Betts, A. A. Bickley, R. Bindel, W. Busza, A. Carroll, Z. Chai, V. Chetluru, M. P. Decowski, E. García, T. Gburek, N. George, K. Gulbrandsen, C. Halliwell, J. Hamblen, M. HauerC. Henderson, D. J. Hofman, R. S. Hollis, R. Hołyński, B. Holzman, A. Iordanova, E. Johnson, J. L. Kane, N. Khan, P. Kulinich, C. M. Kuo, W. Li, W. T. Lin, C. Loizides, S. Manly, A. C. Mignerey, R. Nouicer, A. Olszewski, R. Pak, C. Reed, C. Roland, G. Roland, J. Sagerer, H. Seals, I. Sedykh, C. E. Smith, M. A. Stankiewicz, P. Steinberg, G. S.F. Stephans, A. Sukhanov, M. B. Tonjes, A. Trzupek, C. Vale, G. J. Van Nieuwenhuizen, S. S. Vaurynovich, R. Verdier, G. I. Veres, P. Walters, E. Wenger, F. L.H. Wolfs, B. Wosiek, K. Woźniak, B. Wysłouch

研究成果: 雜誌貢獻期刊論文同行評審

213 引文 斯高帕斯(Scopus)

摘要

A measurement of two-particle correlations with a high transverse momentum trigger particle (pTtrig>2.5GeV/c) is presented for Au+Au collisions at sNN=200GeV over the uniquely broad longitudinal acceptance of the PHOBOS detector (-4<Δη<2). A broadening of the away-side azimuthal correlation compared to elementary collisions is observed at all Δη. As in p+p collisions, the near side is characterized by a peak of correlated partners at small angle relative to the trigger particle. However, in central Au+Au collisions an additional correlation extended in Δη and known as the "ridge" is found to reach at least |Δη| ≈4. The ridge yield is largely independent of Δη over the measured range, and it decreases towards more peripheral collisions. For the chosen pTtrig cut, the ridge yield is consistent with zero for events with less than roughly 100 participating nucleons.

原文???core.languages.en_GB???
文章編號062301
期刊Physical Review Letters
104
發行號6
DOIs
出版狀態已出版 - 11 2月 2010

指紋

深入研究「High transverse momentum triggered correlations over a large pseudorapidity Acceptance in Au+Au Collisions at sNN=200GeV」主題。共同形成了獨特的指紋。

引用此