First Observation of the Directed Flow of D-0 and <(D-0)over bar> in Au +Au Collisions at root s(NN)=200 GeV

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F19%3A00337233" target="_blank" >RIV/68407700:21340/19:00337233 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1103/PhysRevLett.123.162301" target="_blank" >https://doi.org/10.1103/PhysRevLett.123.162301</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevLett.123.162301" target="_blank" >10.1103/PhysRevLett.123.162301</a>

Result language

angličtina

Original language name

First Observation of the Directed Flow of D-0 and <(D-0)over bar> in Au +Au Collisions at root s(NN)=200 GeV

Original language description

We report the first measurement of rapidity-odd directed flow (v(1)) for D-0 and (D-0) over cap mesons at midrapidity (vertical bar y vertical bar < 0.8) in Au + Au collisions at. root s(NN) = 200 GeV using the STAR detector at the Relativistic Heavy Ion Collider. In 10-80% Au + Au collisions, the slope of the v(1) rapidity dependence (dv(1)/dy), averaged over D-0 and <(D-0)over cap> mesons, is -0.080 +/- 0.017(stat) +/- 0.016(syst) for transverse momentum p(T) above 1.5 GeV/c. The absolute value of D-0 meson dv(1)/dy is about 25 times larger than that for charged kaons, with 3.4 sigma significance. These data give a unique insight into the initial tilt of the produced matter, and offer constraints on the geometric and transport parameters of the hot QCD medium created in relativistic heavy-ion collisions.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10301 - Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)

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)

Publication year

2019

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Physical Review Letters

ISSN

0031-9007

e-ISSN

1079-7114

Volume of the periodical

123

Issue of the periodical within the volume

16

Country of publishing house

US - UNITED STATES

Number of pages

8

Pages from-to

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UT code for WoS article

000490478600004

EID of the result in the Scopus database

2-s2.0-85073815323