Centrality and transverse momentum dependence of D-0-meson production at mid-rapidity in Au plus Au collisions ats root S-NN=200 GeV
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F19%3A00504065" target="_blank" >RIV/61389005:_____/19:00504065 - isvavai.cz</a>
Alternative codes found
RIV/68407700:21340/19:00333321
Result on the web
<a href="https://doi.org/10.1103/PhysRevC.99.034908" target="_blank" >https://doi.org/10.1103/PhysRevC.99.034908</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevC.99.034908" target="_blank" >10.1103/PhysRevC.99.034908</a>
Alternative languages
Result language
angličtina
Original language name
Centrality and transverse momentum dependence of D-0-meson production at mid-rapidity in Au plus Au collisions ats root S-NN=200 GeV
Original language description
We report a new measurement of D-0-meson production at mid-rapidity (vertical bar y vertical bar < 1) in Au + Au collisions at root S-NN= 200 GeV utilizing the heavy flavor tracker, a high resolution silicon detector at the STAR experiment. Invariant yields of D-0 mesons with transverse momentum P-T less than or similar to 9 GeV/c are reported in various centrality bins (0-10%, 10-20%, 20-40%, 40-60%, and 60-80%). Blast-wave thermal models are used to fit the D-0-meson P-T spectra to study D-0 hadron kinetic freeze-out properties. The average radial flow velocity extracted from the fit is considerably smaller than that of light hadrons (pi, K, and p), but comparable to that of hadrons containing multiple strange quarks (phi, Xi(-)), indicating that D-0 mesons kinetically decouple from the system earlier than light hadrons. The calculated D-0 nuclear modification factors reaffirm that charm quarks suffer a large amount of energy loss in the medium, similar to those of light quarks for P-T > 4GeV/c in central 0-10% Au + Au collisions. At low P-T , the nuclear modification factors show a characteristic structure qualitatively consistent with the expectation from model predictions that charm quarks gain sizable collective motion during the medium evolution. The improved measurements are expected to offer new constraints to model calculations and help gain further insights into the hot and dense medium created in these collisions.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10304 - Nuclear physics
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physical Review C
ISSN
2469-9985
e-ISSN
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Volume of the periodical
99
Issue of the periodical within the volume
3
Country of publishing house
US - UNITED STATES
Number of pages
25
Pages from-to
034908
UT code for WoS article
000461904800004
EID of the result in the Scopus database
2-s2.0-85063283838