Disappearance of back-to-back high p {sub T} hadron correlations in central Au+Au collisions at {radical}s{sub NN} = 200 GeV
Journal Article
·
· Physical Review Letters
OSTI ID:821028
Azimuthal correlations for large transverse momentum charged hadrons have been measured over a wide pseudo-rapidity range and full azimuth in Au+Au and p+p collisions at = {radical}s{sub NN} = 200 GeV. The small-angle correlations observed in p+p collisions and at all centralities of Au+Au collisions are characteristic of hard-scattering processes already observed in elementary collisions. A strong back-to-back correlation exists for p+p and peripheral Au + Au. In contrast, the back-to-back correlations are reduced considerably in the most central Au+Au collisions, indicating substantial interaction as the hard-scattered partons or their fragmentation products traverse the medium.
- Research Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Director, Office of Science. Office of High Energy and Nuclear Physics. Division of Nuclear Physics (US)
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 821028
- Report Number(s):
- LBNL-51685; PRLTAO; R&D Project: NRNC; TRN: US200407%%146
- Journal Information:
- Physical Review Letters, Vol. 9008, Issue 8; Other Information: Journal Publication Date: 2/28/2003; PBD: 25 Oct 2002; ISSN 0031-9007
- Country of Publication:
- United States
- Language:
- English
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