# 10th International Conference on Hard and Electromagnetic Probes of High-Energy Nuclear Collisions

May 31, 2020 to June 5, 2020
Online
US/Central timezone

## System size scan of D meson RAA and vn using PbPb, XeXe, ArAr, and OO collisions

Jun 3, 2020, 11:50 AM
20m
https://cern.zoom.us/j/97442756310

#### https://cern.zoom.us/j/97442756310

Oral Presentation Heavy Flavor and Quarkonia

### Speaker

Prof. Jacquelyn Noronha-Hostler (University of Illinois Urbana Champaign)

### Description

Experimental measurements indicate no suppression (e.g. RpPb ∼ 1) but a surprisingly large D meson v2 was measured in pPb collisions. In order to understand these results we use Trento+v-USPhydro+DAB-MOD to make predictions and propose a system size scan at the LHC involving $^{208}PbPb$, $^{129}XeXe$, $^{40}ArAr$, and $^{16}OO$ collisions. We find that the nuclear modification factor approaches unity as the system size is decreased, but nonetheless, in the 0–10% most central collisions v2{2} is roughly equivalent regardless of system size. These results arise from a rather non-trivial interplay between the shrinking path length and the enhancement of eccentricities in small systems at high multiplicity. Finally, we also find a surprising sensitivity of D mesons v2{2} in 0–10% at pT = 2–5 GeV to the slight deformation of 129Xe recently found at LHC.

Contribution type Contributed Talk Heavy Flavor and Quarkonia

### Primary authors

Prof. Jacquelyn Noronha-Hostler (University of Illinois Urbana Champaign) Dr Caio Prado (Central China Normal University (CN)) Dr Roland Katz (Subatech, Nantes) Alexandre Alarcon Do Passo Suaide (Universidade de Sao Paulo (BR))

### Presentation materials

 HP2020_NoronhaHostler.pdf Recording