5-11 February 2017
Hyatt Regency Chicago
America/Chicago timezone

Non-prompt $D^{0}$-meson production in Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV in STAR

Not scheduled
2h 30m
Hyatt Regency Chicago

Hyatt Regency Chicago

151 East Wacker Drive Chicago, Illinois, USA, 60601
Board: H20


Xiaolong Chen (USTC/LBNL)


Heavy flavor quarks ($c$, $b$) are produced dominantly by the interactions of the initial incoming partons, and thus experience the entire evolution of the hot and dense medium created in high-energy nuclear collisions. Systematic investigations of charm and bottom hadron production in heavy-ion collisions will shed lights into the understanding of the parton energy loss in the Quark-Gluon Plasma (QGP), which can help constrain the transport parameters of the QGP medium.

In this poster, we will present the first measurement of non-prompt $D^{0}$-meson production from bottom hadron decays using the Heavy Flavor Tracker (HFT) in Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV by the STAR experiment. Distributions of the Distance of Closest Approach (DCA) for reconstructed $D^{0}$-mesons are studied, and fitted with the template distributions for the prompt and non-prompt $D^{0}$-mesons obtained from Monte Carlo simulations. Fractions of non-prompt $D^{0}$-mesons are extracted in the transverse momentum region 3 $< p_{T} <$ 8 GeV/c. The results are compared to model calculations and physics implications on the bottom production will be discussed.

Collaboration STAR
Preferred Track Open Heavy Flavors

Primary author

Xiaolong Chen (USTC/LBNL)

Presentation materials