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Transverse-momentum spectra in Au plus Au and d plus Au collisions at root s(NN)=200 GeV and the pseudorapidity dependence of high-p(T) suppression
dc.contributor.author | Ito, H. | |
dc.contributor.author | Murray, Michael J. | |
dc.contributor.author | Neumann, B. | |
dc.contributor.author | Norris, J. | |
dc.contributor.author | Sanders, Stephen J. | |
dc.date.accessioned | 2007-05-15T21:15:41Z | |
dc.date.available | 2007-05-15T21:15:41Z | |
dc.date.issued | 2003-08 | |
dc.identifier.citation | Arsene, I; Bearden, IG, et al. Transverse-momentum spectra in Au plus Au and d plus Au collisions at root s(NN)=200 GeV and the pseudorapidity dependence of high-p(T) suppression. PHYSICAL REVIEW LETTERS. August 2003. 91(7) | |
dc.identifier.uri | http://hdl.handle.net/1808/1620 | |
dc.description.abstract | We present spectra of charged hadrons from Au+Au and d+Au collisions at roots(NN)=200 GeV measured with the BRAHMS experiment at RHIC. The spectra for different collision centralities are compared to spectra from p+(p) over bar collisions at the same energy scaled by the number of binary collisions. The resulting ratios (nuclear modification factors) for central Au+Au collisions at eta=0 and eta=2.2 evidence a strong suppression in the high p(T) region (>2 GeV/c). In contrast, the d+Au nuclear modification factor (at eta=0) exhibits an enhancement of the high p(T) yields. These measurements indicate a high energy loss of the high p(T) particles in the medium created in the central Au+Au collisions. The lack of suppression in d+Au collisions makes it unlikely that initial state effects can explain the suppression in the central Au+Au collisions. | |
dc.language.iso | en_US | |
dc.publisher | AMERICAN PHYSICAL SOC | |
dc.title | Transverse-momentum spectra in Au plus Au and d plus Au collisions at root s(NN)=200 GeV and the pseudorapidity dependence of high-p(T) suppression | |
dc.type | Article | |
dc.identifier.doi | 10.1103/PhysRevLett.91.072305 | |
dc.rights.accessrights | openAccess |