Measurements of mass-dependent azimuthal anisotropy in central p plus Au, d + Au, and He-3 + Au collisions at root s(NN)=200 GeV

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F18%3A10377015" target="_blank" >RIV/00216208:11320/18:10377015 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1103/PhysRevC.97.064904" target="_blank" >https://doi.org/10.1103/PhysRevC.97.064904</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevC.97.064904" target="_blank" >10.1103/PhysRevC.97.064904</a>

Result language
angličtina
Original language name
Measurements of mass-dependent azimuthal anisotropy in central p plus Au, d + Au, and He-3 + Au collisions at root s(NN)=200 GeV
Original language description
We present measurements of the transverse-momentum dependence of elliptic flow upsilon(2) for identified pions and (anti)protons at midrapidity (vertical bar eta vertical bar < 0.35), in 0%-5% central p + Au and He-3 + Au collisions at ,root s(NN) = 200 GeV. When taken together with previously published measurements in d + Au collisions at root s(NN) = 200 GeV, the results cover a broad range of small-collision-system multiplicities and intrinsic initial geometries. We observe a clear mass-dependent splitting of upsilon(2) (p(T)) in d + Au and He-3 + Au collisions, just as in large nucleus-nucleus (A + A) collisions, and a smaller splitting in p + Au collisions. Both hydrodynamic and transport model calculations successfully describe the data at low p(T) (<1.5 GeV/c), but fail to describe various features at higher p(T). In all systems, the upsilon(2) values follow an approximate quark-number scaling as a function of the hadron transverse kinetic energy per constituent quark (KET/n(q)), which was also seen previously in A + A collisions.
Czech name
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Czech description
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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

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
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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