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 Parallel

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.

Track Heavy Flavor and Quarkonia
Contribution type Contributed Talk

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