Article
Centrality-Dependent Modification of Jet-Production Rates in Deuteron-Gold Collisions at root s(NN)=200 GeV
Physical Review Letters
Document Type
Article
Disciplines
Publication Version
Published Version
Publication Date
3-24-2016
DOI
10.1103/PhysRevLett.116.122301
Abstract
Jet production rates are measured in p + p and d + Au collisions at root s(NN) = 200 GeV recorded in 2008 with the PHENIX detector at the Relativistic Heavy Ion Collider. Jets are reconstructed using the R = 0.3 anti-k(t) algorithm from energy deposits in the electromagnetic calorimeter and charged tracks in multiwire proportional chambers, and the jet transverse momentum (p(T)) spectra are corrected for the detector response. Spectra are reported for jets with 12 < p(T) < 50 GeV/c, within a pseudorapidity acceptance of vertical bar eta vertical bar < 0.3. The nuclear-modification factor (R-dAu) 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 (R-CP) show large, p(T)-dependent deviations from unity, challenging the conventional models that relate hard-process rates and soft-particle production in collisions involving nuclei.
Copyright Owner
American Physical Society
Copyright Date
2016
Language
en
File Format
application/pdf
Citation Information
Andrew Adare, Nicole Apadula, Sarah C. Campbell, Alan Dion, et al.. "Centrality-Dependent Modification of Jet-Production Rates in Deuteron-Gold Collisions at root s(NN)=200 GeV" Physical Review Letters Vol. 116 Iss. 12 (2016) p. 122301 Available at: http://works.bepress.com/craig-ogilvie/30/
This is an article from Physical Review Letters 116 (2016): 122301, doi:10.1103/PhysRevLett.116.122301. Posted with permission.