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J/psi suppression at forward rapidity in Au plus Au collisions at root s(NN)=39 and 62.4 GeV

Title
J/psi suppression at forward rapidity in Au plus Au collisions at root s(NN)=39 and 62.4 GeV
Other Titles
psi suppression at forward rapidity in Au plus Au collisions at root s(NN)=39 and 62.4 GeV
Author
김용균
Keywords
PROTON-NUCLEUS COLLISIONS; HEAVY-ION COLLISIONS; CERN-SPS; J-PSI; ABSORPTION; CHARMONIA
Issue Date
2012-01
Publisher
UNIV CHICAGO PRESS
Citation
PHYSICAL REVIEW C, 2012, 86(6), P.9
Abstract
We present measurements of the J/psi invariant yields in root s(NN) = 39 and 62.4 GeV Au + Au collisions at forward rapidity (1.2 < vertical bar y vertical bar < 2.2). Invariant yields are presented as a function of both collision centrality and transverse momentum. Nuclear modifications are obtained for central relative to peripheral Au + Au collisions (R-CP) and for various centrality selections in Au + Au relative to scaled p + p cross sections obtained from other measurements (R-AA). The observed suppression patterns at 39 and 62.4 GeV are quite similar to those previously measured at 200 GeV. This similar suppression presents a challenge to theoretical models that contain various competing mechanisms with different energy dependencies, some of which cause suppression and others enhancement.
URI
https://journals.aps.org/prc/abstract/10.1103/PhysRevC.86.064901http://hdl.handle.net/20.500.11754/52622
ISSN
0556-2813; 1089-490X
DOI
10.1103/PhysRevC.86.064901
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > NUCLEAR ENGINEERING(원자력공학과) > Articles
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