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Centrality-Dependent Modification of Jet-Production Rates in Deuteron-Gold Collisions at √sNN = 200 GeV

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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
Published in
Physical Review Letters
Authors
PHENIX Collaboration
Date
2016
Copyright
© 2016 American Physical Society. Published in this repository with the kind permission of the publisher.

 
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.
Publisher
American Physical Society
ISSN Search the Publication Forum
0031-9007
Keywords
p+p collisions d+Au collisions jet production
DOI
https://doi.org/10.1103/PhysRevLett.116.122301
URI

http://urn.fi/URN:NBN:fi:jyu-201606093007

Publication in research information system

https://converis.jyu.fi/converis/portal/detail/Publication/25665945

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