| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5495290 | Physics Letters B | 2016 | 13 Pages |
Abstract
We present measurements of two-particle correlations with neutral pion trigger particles of transverse momenta 83GeV/c, while with decreasing momenta an enhancement develops reaching about 5 at low pTassoc. On the near side, an enhancement of IAA between 1.2 at the highest to 1.8 at the lowest pTassoc is observed. The data are compared to parton-energy-loss predictions of the JEWEL and AMPT event generators, as well as to a perturbative QCD calculation with medium-modified fragmentation functions. All calculations qualitatively describe the away-side suppression at high pTassoc. Only AMPT captures the enhancement at low pTassoc, both on the near and away side. However, it also underpredicts IAA above 5Â GeV/c, in particular on the near-side.
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