Disappearance of the Mach Cone in heavy ion collisions

Nattrass, Christine ; Sharma, Natasha ; Mazer, Joel ; et al.
Phys.Rev.C 94 (2016) 011901, 2016.
Inspire Record 1466814 DOI 10.17182/hepdata.73675

We present an analysis of di-hadron correlations using recently developed methods for background subtraction which allow for higher precision measurements with fewer assumptions about the background. These studies indicate that low momentum jets interacting with the medium do not equilibrate with the medium, but rather that interactions with the medium lead to more subtle increases in their widths and fragmentation functions, consistent with observations from studies of higher momentum fully reconstructed jets. The away-side shape is not consistent with a Mach cone.

13 data tables

Background subtracted dihadron correlations with 4 $< p_T^{t} <$ 6 GeV/$c$ for 1.5 $< p_T^{a} <$ 2.0 GeV/$c$ in d+Au and Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV in bins of the trigger particle relative to the reaction plane. Statistical uncertainties are nontrivially correlate point to point.

Background subtracted dihadron correlations with 4 $< p_T^{t} <$ 6 GeV/$c$ for 2.0 $< p_T^{a} <$ 3.0 GeV/$c$ in d+Au and Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV in bins of the trigger particle relative to the reaction plane. Statistical uncertainties are nontrivially correlate point to point.

Background subtracted dihadron correlations with 4 $< p_T^{t} <$ 6 GeV/$c$ for 3.0 $< p_T^{a} <$ 4.0 GeV/$c$ in d+Au and Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV in bins of the trigger particle relative to the reaction plane. Statistical uncertainties are nontrivially correlate point to point.

More…