Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
HK: Fachverband Physik der Hadronen und Kerne
HK 6: Heavy-Ion Collisions and QCD Phases I
HK 6.3: Vortrag
Montag, 16. März 2026, 17:00–17:15, PHIL C 601
Measurement of directed flow (v1) of D0 mesons in Pb-Pb collisions at √sNN = 5.36 TeV — •Alica Marie Enderich for the ALICE Germany collaboration — Physikalisches Institut, Heidelberg, Germany
Directed flow is the first harmonic of the azimuthal particle distribution in ultra-relativistic heavy-ion collisions. It is sensitive to the spatial profile of the initial conditions and the pre-equilibrium early time dynamics.
Recent predictions indicate that the slope of the directed flow at mid-rapidity for D0 mesons, driven by the transport of charm quarks in a tilted medium, can be several times larger than the one for light-flavor hadrons.
Heavy-ion collisions also generate extremely strong electromagnetic fields, primarily induced by spectator protons. Unlike light quarks, the formation time of charm quarks is comparable to the time at which the magnetic field reaches its maximum strength. As a result, charm quarks are expected to exhibit a much larger charge-dependent directed flow than light quarks.
During Run 2, ALICE provided the first measurement of the charge-dependent v1 for D0 mesons in Pb-Pb collisions at LHC. As the experimental measurement was limited by statistics, it is now repeated in Run 3. The reconstruction of the decay topology is improved via ML techniques and the measurement is extended to lower pT.
In this talk, current results on the charge-integrated and charge-dependent v1 for D0 mesons are presented. The measurements are compared with theoretical model calculations and results from other experiments.
Keywords: Anisotropic flow; Heavy-ion collisions; Heavy-flavor physics