Measurement of inclusive J/psi suppression in Au plus Au collisions at root s(NN)=200 GeV through the dimuon channel at STAR

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F19%3A00509907" target="_blank" >RIV/61389005:_____/19:00509907 - isvavai.cz</a>
Alternative codes found
RIV/68407700:21340/19:00337236
Result on the web
<a href="https://doi.org/10.1016/j.physletb.2019.134917" target="_blank" >https://doi.org/10.1016/j.physletb.2019.134917</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.physletb.2019.134917" target="_blank" >10.1016/j.physletb.2019.134917</a>

Result language
angličtina
Original language name
Measurement of inclusive J/psi suppression in Au plus Au collisions at root s(NN)=200 GeV through the dimuon channel at STAR
Original language description
J/psi suppression has long been considered a sensitive signature of the formation of the Quark-Gluon Plasma (QGP) in relativistic heavy-ion collisions. In this letter, we present the first measurement of inclusive J/psi production at mid-rapidity through the dimuon decay channel in Au+Au collisions at root s(NN) = 200 GeV with the STAR experiment. These measurements became possible after the installation of the Muon Telescope Detector was completed in 2014. The J/psi yields are measured in a wide transverse momentum (p(T)) range of 0.15 GeV/c to 12 GeV/c from central to peripheral collisions. They extend the kinematic reach of previous measurements at RHIC with improved precision. In the 0-10% most central collisions, the J/psi yield is suppressed by a factor of approximately 3 for p(T) > 5 GeV/c relative to that in p + p collisions scaled by the number of binary nucleon-nucleon collisions. The J/psi nuclear modification factor displays little dependence on p(T) in all centrality bins. Model calculations can qualitatively describe the data, providing further evidence for the color-screening effect experienced by J/psi mesons in the QGP.(
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
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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