Publication: First Observation of the Directed Flow of D-0 and <(D-0)over cap> in Au +Au Collisions at root s(NN)=200 GeV
Дата
2019
Авторы
Adam, J.
Adamczyk, L.
Adams, J. R.
Adkins, J. K.
Alekseev, I.
Brandin, A, V.
Khyzhniak, Y, V.
Kochenda, L.
Kravtsov, P.
Nigmatkulov, G.
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Аннотация
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.
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First Observation of the Directed Flow of D-0 and <(D-0)over cap> in Au +Au Collisions at root s(NN)=200 GeV / Adam, J [et al.] // Physical Review Letters. - 2019. - 123. - № 16. - 10.1103/PhysRevLett.123.162301
URI
https://www.doi.org/10.1103/PhysRevLett.123.162301
https://www.scopus.com/record/display.uri?eid=2-s2.0-85073815323&origin=resultslist
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https://openrepository.mephi.ru/handle/123456789/19697
https://www.scopus.com/record/display.uri?eid=2-s2.0-85073815323&origin=resultslist
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000490478600004
https://openrepository.mephi.ru/handle/123456789/19697