scholarly journals Measurement of open-charm hadron production in Au+Au collisions at $\sqrt{s_\mathrm{NN}}$ = 200 GeV with the STAR experiment

2020 ◽  
Author(s):  
Robert Licenik
Keyword(s):  
Hadron Production ◽  
Open Charm ◽  
Charm Hadron ◽  
200 Gev ◽  
Star Experiment

scholarly journals Open Bottom Production in Au Au Collisions at √sNN = 200 GeV with the STAR Experiment

Proceedings ◽  
2019 ◽  
Vol 10 (1) ◽  
pp. 39 ◽  
Author(s):  
Shenghui Zhang
Keyword(s):  
Hadron Production ◽  
The Other ◽  
Heavy Flavor ◽  
Significance Level ◽  
Decay Channels ◽  
Nuclear Modification ◽  
Charm Hadron ◽  
200 Gev ◽  
Star Experiment ◽  
Nuclear Modification Factors

In these proceedings, we present measurements of open bottom hadron production through multiple decay channels in Au + Au collisions at s NN = 200 GeV by the STAR experiment. Specifically, measurements of nuclear modification factors for electrons, J / ψ , and D 0 from open bottom hadron decays, enabled by the Heavy Flavor Tracker, are shown. A large suppression for non-prompt J / ψ and non-prompt D 0 are observed at high transverse momenta. On the other hand, there seems to be less suppression for electrons from bottom hadron decays than for those from charm hadron decays at ∼ 2 σ significance level.

scholarly journals Constraints on gluon distribution functions in the nucleon and nucleus from open charm hadron production at the Electron-Ion Collider

2021 ◽  
Vol 104 (5) ◽  
Author(s):  
Matthew Kelsey ◽  
Reynier Cruz-Torres ◽  
Xin Dong ◽  
Yuanjing Ji ◽  
Sooraj Radhakrishnan ◽  
...  
Keyword(s):  
Gluon Distribution ◽  
Hadron Production ◽  
Open Charm ◽  
Distribution Functions ◽  
Charm Hadron

scholarly journals Open Bottom Production in Au+Au Collisions at s NN = 200 GeV with the STAR Experiment

2018 ◽  
Vol 46 ◽  
pp. 1860014 ◽  
Author(s):  
Shenghui Zhang
Keyword(s):  
Heavy Flavor ◽  
Vertex Detector ◽  
Significance Level ◽  
Decay Channels ◽  
Nuclear Modification ◽  
Decay Products ◽  
Charm Hadron ◽  
200 Gev ◽  
Star Experiment ◽  
Nuclear Modification Factors

In these proceedings, we present measurements of open bottom hadron production through multiple decay channels in Au+Au collisions at [Formula: see text] = 200 GeV by the STAR experiment. Namely, measurements of nuclear modification factors for electrons, [Formula: see text], and [Formula: see text] from open bottom hadron decays are shown. The decay products are topologically identified utilizing the Heavy Flavor Tracker, a silicon vertex detector installed at STAR during the period of 2014 - 2016. It enables precise reconstruction of displaced decay vertices. The results show large suppression for non-prompt [Formula: see text] and non-prompt [Formula: see text] at high transverse momenta, and indicate less suppression for electrons from bottom hadron decays than for those from charm hadron decays at [Formula: see text] significance level.

scholarly journals Open-Charm Hadron Measurements in Au+Au Collisions at √sNN = 200 GeV by the STAR Experiment

Universe ◽  
2019 ◽  
Vol 5 (9) ◽  
pp. 196
Author(s):  
Jan Vanek
Keyword(s):  
D Mesons ◽  
Heavy Ion ◽  
Gluon Plasma ◽  
Open Charm ◽  
Strong Interactions ◽  
Heavy Flavor ◽  
Directed Flow ◽  
Charm Quarks ◽  
Charm Hadron ◽  
200 Gev

Study of the open-charm hadron production in heavy-ion collisions is crucial for understanding the properties of the Quark-Gluon Plasma. In these papers, we report on a selection of recent STAR measurements of open-charm hadrons in Au+Au collisions at s NN = 200 GeV , using the Heavy-Flavor Tracker. In particular, the nuclear modification factors of D 0 and D ± mesons, elliptic and directed flow of D 0 mesons, D s /D 0 and Λ c / D 0 yield ratios are discussed. The observed suppression of D 0 and D ± mesons suggests strong interactions of the charm quarks with the QGP. The measured elliptic flow of D 0 mesons is large and follows the NCQ scaling, suggesting that charm quarks may be close to thermal equilibrium with the QGP medium. Both D s /D 0 and Λ c / D 0 yield ratios are found to be enhanced in Au+Au collisions. The enhancement can be explained by models incorporating coalescence hadronization of charm quarks. In addition, the directed flow of the D 0 mesons is measured to be negative and larger than that of light-flavor mesons which is in a qualitative agreement with hydrodynamic model predictions with a tilted QGP bulk.

Sign in / Sign up

Export Citation Format

Share Document