Measurement of heavy flavor production and azimuthal anisotropy in small and large systems with ATLAS
Metadatos
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Elsevier BV
Fecha
2019Referencia bibliográfica
Hu, Q. (2019). Measurement of heavy flavor production and azimuthal anisotropy in small and large systems with ATLAS. Nuclear Physics A, 982, 687-690.
Resumen
Heavy-flavor hadron production and collective motion in A+A collisions provide insight into the energy loss mechanism
and transport properties of heavy quarks in the QGP. The same measurements in p+A collisions serve as an important
baseline for understanding the observations in A+A collisions. For example, detailed studies of heavy-flavor hadron
azimuthal anisotropy in p+A collisions may help to address whether the observed long-range “ridge” correlation arises
from hard or semi-hard processes, or if it is the result of mechanisms unrelated to the initial hardness scale. These proceedings
summarize heavy-flavor hadron production, via their semi-leptonic decay to muons in 2.76 TeV Pb+Pb and pp
collisions, non-prompt J/ψ in 5.02 TeV Pb+Pb and pp collisions, and prompt D0 mesons in 8.16 TeV p+Pb collisions
using ATLAS detector at the LHC. Azimuthal anisotropy of heavy-flavor hadrons is studied via their decay muons in
2.76 TeV Pb+Pb and 8.16 TeV p+Pb collisions, and via non-prompt J/ψ in 5.02 TeV Pb+Pb collisions. Strong suppression
of heavy-flavor hadron production and azimuthal anisotropy are observed in Pb+Pb collisions, while significant
azimuthal anisotropy of heavy-flavor muons is observed in p+Pb collisions, without evidence of the modification of
their production rates.