Publication: Creation of quark–gluon plasma droplets with three distinct geometries
Дата
2019
Авторы
Aidala, C.
Akiba, Y.
Alfred, M.
Andrieux, V.
Blau, D. S.
Riabov, V.
Samsonov, V.
Taranenko, A.
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© 2018, The Author(s), under exclusive licence to Springer Nature Limited. Experimental studies of the collisions of heavy nuclei at relativistic energies have established the properties of the quark–gluon plasma (QGP), a state of hot, dense nuclear matter in which quarks and gluons are not bound into hadrons1–4. In this state, matter behaves as a nearly inviscid fluid5 that efficiently translates initial spatial anisotropies into correlated momentum anisotropies among the particles produced, creating a common velocity field pattern known as collective flow. In recent years, comparable momentum anisotropies have been measured in small-system proton–proton (p+p) and proton–nucleus (p+A) collisions, despite expectations that the volume and lifetime of the medium produced would be too small to form a QGP. Here we report on the observation of elliptic and triangular flow patterns of charged particles produced in proton–gold (p+Au), deuteron–gold (d+Au) and helium–gold (3He+Au) collisions at a nucleon–nucleon centre-of-mass energy sNN = 200 GeV. The unique combination of three distinct initial geometries and two flow patterns provides unprecedented model discrimination. Hydrodynamical models, which include the formation of a short-lived QGP droplet, provide the best simultaneous description of these measurements.
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Creation of quark–gluon plasma droplets with three distinct geometries / Aidala, C. [et al.] // Nature Physics. - 2019. - 15. - № 3. - P. 214-220. - 10.1038/s41567-018-0360-0
URI
https://www.doi.org/10.1038/s41567-018-0360-0
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https://openrepository.mephi.ru/handle/123456789/16404
https://www.scopus.com/record/display.uri?eid=2-s2.0-85058183273&origin=resultslist
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000460166500014
https://openrepository.mephi.ru/handle/123456789/16404