Centrality-dependent modification of jet-production rates in deuteron-gold collisions at √s.sub.NN./sub.=200  GeV

0522590 - FZÚ 2020 RIV US eng J - Journal Article
Adare, A. - Aidala, C. - Ajitanand, N.N. - Růžička, Pavel - Tomášek, Lukáš - Tomášek, Michal - Vrba, Václav … Total 484 authors
Centrality-dependent modification of jet-production rates in deuteron-gold collisions at √s_NN=200  GeV.
Physical Review Letters. Roč. 116, č. 12 (2016), s. 1-9, č. článku 122301. ISSN 0031-9007. E-ISSN 1079-7114
Institutional support: RVO:68378271
Keywords : PHENIX * Brookhaven RHIC Coll * quantum chromodynamics * tracks * Bayesian * Glauber * Monte Carlo
OECD category: Particles and field physics
Impact factor: 8.462, year: 2016
Method of publishing: Limited access
https://doi.org/10.1103/physrevlett.116.122301

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.

Permanent Link: http://hdl.handle.net/11104/0307061