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

Adare, A. ; Christiansen, P. LU ; Gustafsson, H.-A. LU ; Haslum, E. LU ; Oskarsson, A. LU ; Rosendahl, S.S.E. LU ; Silvermyr, D. LU orcid ; Stenlund, E. LU and Zou, L. (2016) In Physical Review Letters 116(12).
Abstract
Jet production rates are measured in p+p and d+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=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 |η|<0.3. The nuclear-modification factor (RdAu) values for 0%-100% d+Au events are found to be consistent with unity, constraining the role of initial state effects on jet production. However, the centrality-selected RdAu values and... (More)
Jet production rates are measured in p+p and d+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=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 |η|<0.3. The nuclear-modification factor (RdAu) values for 0%-100% d+Au events are found to be consistent with unity, constraining the role of initial state effects on jet production. However, the centrality-selected 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. (Less)
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; ; ; ; ; ; ; and
author collaboration
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Colliding beam accelerators, Gold, Gold compounds, Heavy ions, Particle detectors, Conventional models, Deuteron-gold collisions, Electromagnetic calorimeter, Initial-state effects, Multi-wire proportional chambers, Nuclear modification factors, Relativistic Heavy Ion Collider, Transverse momenta, Germanium compounds
in
Physical Review Letters
volume
116
issue
12
article number
122301
publisher
American Physical Society
external identifiers
  • scopus:84962424379
ISSN
0031-9007
DOI
10.1103/PhysRevLett.116.122301
language
English
LU publication?
yes
id
3bf631fb-f8a4-4750-afe1-80abf976580b
date added to LUP
2022-04-07 10:46:39
date last changed
2023-05-10 15:21:36
@article{3bf631fb-f8a4-4750-afe1-80abf976580b,
  abstract     = {{Jet production rates are measured in p+p and d+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=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&lt;pT&lt;50 GeV/c, within a pseudorapidity acceptance of |η|&lt;0.3. The nuclear-modification factor (RdAu) values for 0%-100% d+Au events are found to be consistent with unity, constraining the role of initial state effects on jet production. However, the centrality-selected 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.}},
  author       = {{Adare, A. and Christiansen, P. and Gustafsson, H.-A. and Haslum, E. and Oskarsson, A. and Rosendahl, S.S.E. and Silvermyr, D. and Stenlund, E. and Zou, L.}},
  issn         = {{0031-9007}},
  keywords     = {{Colliding beam accelerators; Gold; Gold compounds; Heavy ions; Particle detectors; Conventional models; Deuteron-gold collisions; Electromagnetic calorimeter; Initial-state effects; Multi-wire proportional chambers; Nuclear modification factors; Relativistic Heavy Ion Collider; Transverse momenta; Germanium compounds}},
  language     = {{eng}},
  number       = {{12}},
  publisher    = {{American Physical Society}},
  series       = {{Physical Review Letters}},
  title        = {{Centrality-Dependent Modification of Jet-Production Rates in Deuteron-Gold Collisions at sNN =200 GeV}},
  url          = {{http://dx.doi.org/10.1103/PhysRevLett.116.122301}},
  doi          = {{10.1103/PhysRevLett.116.122301}},
  volume       = {{116}},
  year         = {{2016}},
}