Speaker
Chuang FU
Description
Charm quarks are excellent probes of properties of Quark-Gluon Plasma (QGP)
created in ultra-relativistic heavy-ion collisions.
They are produced before the QGP is created and their thermalization time is comparable to
the lifetime of the QGP. Compared to other open charm mesons, $D_{s}$ mesons are expected
to be less sensitive to the interactions in the hadronic phase due to their valence quark compositions.
In this talk, we will present results from the STAR experiment on invariant yields of $D_{s}$ mesons
as a function of transverse momentum in Au+Au collision at $\sqrt{s_{NN}}$ = 200 GeV from year 2014 and 2016 data.
The ratio between strange ($D_{s}$) and non-strange ($D_{0}$) open charm mesons will also be shown,
and compared to the PYTHIA and model calculations. A clear enhancement relative to
the PYTHIA calculation is seen in the ratio, while model calculations incorporating strangeness
enhancement and coalescence hadronization are closer to data. These results suggest that recombination of charm quarks with
equilibrated strange quarks in the QGP plays an important role in charm quark hadronization.
| Publications | No |
|---|---|
| Presenter | Chuan Fu |
| Master Student, PhD Student or Postdoc | PhD Student |
Primary author
川 傅
(华中师范大学)
Co-author
Shusu Shi
(CCNU)
