TITLE

Evidence of final-state suppression of high-p... hadrons in Au + Au collisions using d + Au measurements at RHIC

AUTHOR(S)
Back, B.B.; Baker, M.D.; Ballintijn, M.; Barton, D.S.; Becker, B.; Betts, R.R.; Bickley, A.A.; Bindel, R.; Busza, W.; Carroll, A.; Decowski, M.P.; García, E.; Gburek, T.; George, N.; Gulbrandsen, K.; Gushue, S.; Halliwell, C.; Hamblen, J.; Harrington, A.S.; Henderson, C.
PUB. DATE
March 2004
SOURCE
European Physical Journal C -- Particles & Fields;Mar2004 Supplement 1, Vol. 33, ps606
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Transverse momentum spectra of charged hadrons with pT < 6 GeV/c have been measured near mid-rapidity (0.2 < η< 1.4) by the PHOBOS experiment at RHIC in Au + Au and d + Au collisions at √sNN = 200 GeV. The spectra for different collision centralities are compared to p+ &bmacr;p collisions at the same energy. The resulting nuclear modification factor for central Au + Au collisions shows evidence of strong suppression of charged hadrons in the high-pT region (> 2 GeV/c). In contrast, the d + Au nuclear modification factor exhibits no suppression of the high-pT yields. These measurements suggest a large energy loss of the high-pT particles in the highly interacting medium created in the central Au + Au collisions. The lack of suppression in d + Au collisions suggests that it is unlikely that initial state effects can explain the suppression in the central Au + Au collisions.
ACCESSION #
15415384

 

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics