Speaker
Ramona Lea
(Universita e INFN, Trieste (IT))
Description
The high abundance of (anti-)deuterons in the statistics gathered in run 1 of the LHC and the excellent performance of the ALICE setup allow for the simultaneous measurement of the elliptic flow and the deuteron production rates with a large transverse momentum ($p_{\rm T}$) reach.
The (anti-) deuterons are identified using the specific energy loss in the
time projection chamber and the velocity information in the time-of-flight
detector. For nuclei of higher energies, the High Momentum Particle
IDentification (HMPID), a ring-imaging Cherenkov detector, is also
utilized. The elliptic flow of (anti-)deuterons could provide insight into the
production mechanisms of particles in heavy-ion collisions. While one of the
approaches to describe the elliptic flow of hadrons and light nuclei, is given by
quark coalescence, the production of light nuclei is also depicted as a
coalscence of nucleons, i.e. hadron coalescence. Differences should be visible
for those two approaches when the elliptic flow is measured simultaneously
with the $p_{\rm T}$ spectra, especially when they are scaled by the number of nucleons and quarks.
The results are compared to expectations from coalescence and hydrodynamic
models which aim at describing both the $p_{\rm T}$-spectra and the elliptic flow.
| On behalf of collaboration: | ALICE |
|---|
Author
Ramona Lea
(Universita e INFN, Trieste (IT))
