Centrality-Dependent Modification of Jet-Production Rates in Deuteron-Gold Collisions at √sNN = 200 GeV
Abstract
Jet production rates are measured in p þ p and d þ Au collisions at √sNN = 200 GeV recorded in 2008
with the PHENIX detector at the Relativistic Heavy Ion Collider. Jets are reconstructed using the R ¼ 0.3
anti-kt algorithm from energy deposits in the electromagnetic calorimeter and charged tracks in multiwire
proportional chambers, and the jet transverse momentum (pT ) spectra are corrected for the detector
response. Spectra are reported for jets with 12 < pT < 50 GeV=c, within a pseudorapidity acceptance of
jηj < 0.3. The nuclear-modification factor (RdAu) values for 0%–100% d þ Au events are found to be
consistent with unity, constraining the role of initial state effects on jet production. However, the centralityselected
RdAu values and central-to-peripheral ratios (RCP) show large, pT-dependent deviations from unity,
challenging the conventional models that relate hard-process rates and soft-particle production in collisions
involving nuclei.
Main Author
Format
Articles
Research article
Published
2016
Series
Subjects
Publication in research information system
Publisher
American Physical Society
The permanent address of the publication
https://urn.fi/URN:NBN:fi:jyu-201606093007Use this for linking
Review status
Peer reviewed
ISSN
0031-9007
DOI
https://doi.org/10.1103/PhysRevLett.116.122301
Language
English
Published in
Physical Review Letters
Citation
- PHENIX Collaboration. (2016). Centrality-Dependent Modification of Jet-Production Rates in Deuteron-Gold Collisions at √sNN = 200 GeV. Physical Review Letters, 116(12), Article 122301. https://doi.org/10.1103/PhysRevLett.116.122301
Copyright© 2016 American Physical Society. Published in this repository with the kind permission of the publisher.