# Quark Matter 2018

13-19 May 2018
Venice, Italy
Europe/Zurich timezone
The organisers warmly thank all participants for such a lively QM2018! See you in China in 2019!

## Measurement of $D$ meson production and long-range azimuthal correlation in 8.16 TeV $p$+Pb collisions the ATLAS experiment

15 May 2018, 17:00
2h 40m
First floor and third floor (Palazzo del Casinò)

### First floor and third floor

#### Palazzo del Casinò

Poster Open heavy flavour

### Speaker

Qipeng Hu (University of Colorado Boulder)

### Description

Measurements of production and azimuthal anisotropy of prompt charm mesons ($D^0$ and $D^*$) are presented using $p$+Pb data at $\sqrt{s_{NN}}=8.16$ TeV collected in 2016 by ATLAS. Prompt charmed meson production is measured in minimum bias $p$+Pb data, and is reconstructed via two decay channels: $D^0\rightarrow K+\pi$ and $D^*\rightarrow D^0+\pi\rightarrow K+\pi+\pi$. The measured charm meson production cross sections are comparable with FONLL predictions scaled by $A_\mathrm{Pb} = 208$ within uncertainties. The production asymmetry between forward and backward center-of-mass rapidities for the charm mesons is studied for the range of $|y^*| < 0.5$, and no significant asymmetry is observed. The anisotropy is studied using two-particle correlations, with a template fitting procedure used to subtract the residual jet contribution. Finite long-range correlations are observed for particle pairs containing $D^*$ mesons. The flow modulation of $D^*$ is broadly consistent with what has been observed for light hadrons and muons from heavy quark decays.

Content type Experiment Presenter name already specified ATLAS

### Primary authors

Barbara Krystyna Wosiek (Institute of Nuclear Physics Polish Academy of Sciences (PL)) Qipeng Hu (University of Colorado Boulder)