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Centrality and transverse momentum dependence of D-0-meson production at mid-rapidity in Au plus Au collisions ats root S-NN=200 GeV

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dc.contributor.authorAdam, J.
dc.contributor.authorAdamczyk, L.
dc.contributor.authorAdams, J. R.
dc.contributor.authorAdkins, J. K.
dc.contributor.authorAlekseev, I.
dc.contributor.authorBrandin, A, V.
dc.contributor.authorKochenda, L.
dc.contributor.authorKravtsov, P.
dc.contributor.authorNigmatkulov, G.
dc.contributor.authorOkorokov, V. A.
dc.contributor.authorStrikhanov, M.
dc.contributor.authorTaranenko, A.
dc.contributor.authorАлексеев, Игорь Геннадьевич
dc.contributor.authorБрандин, Андрей Владимирович
dc.contributor.authorНигматкулов, Григорий Александрович
dc.contributor.authorОкороков, Виталий Алексеевич
dc.contributor.authorСтриханов, Михаил Николаевич
dc.contributor.authorТараненко, Аркадий Владимирович
dc.date.accessioned2024-11-20T09:59:13Z
dc.date.available2024-11-20T09:59:13Z
dc.date.issued2019
dc.description.abstractWe report a new measurement of D-0-meson production at mid-rapidity (vertical bar y vertical bar < 1) in Au + Au collisions at root S-NN= 200 GeV utilizing the heavy flavor tracker, a high resolution silicon detector at the STAR experiment. Invariant yields of D-0 mesons with transverse momentum P-T less than or similar to 9 GeV/c are reported in various centrality bins (0-10%, 10-20%, 20-40%, 40-60%, and 60-80%). Blast-wave thermal models are used to fit the D-0-meson P-T spectra to study D-0 hadron kinetic freeze-out properties. The average radial flow velocity extracted from the fit is considerably smaller than that of light hadrons (pi, K, and p), but comparable to that of hadrons containing multiple strange quarks (phi, Xi(-)), indicating that D-0 mesons kinetically decouple from the system earlier than light hadrons. The calculated D-0 nuclear modification factors reaffirm that charm quarks suffer a large amount of energy loss in the medium, similar to those of light quarks for P-T > 4GeV/c in central 0-10% Au + Au collisions. At low P-T , the nuclear modification factors show a characteristic structure qualitatively consistent with the expectation from model predictions that charm quarks gain sizable collective motion during the medium evolution. The improved measurements are expected to offer new constraints to model calculations and help gain further insights into the hot and dense medium created in these collisions.
dc.identifier.citationCentrality and transverse momentum dependence of D-0-meson production at mid-rapidity in Au plus Au collisions ats root S-NN=200 GeV / Adam, J [et al.] // Physical Review C. - 2019. - 99. - № 3. - 10.1103/PhysRevC.99.034908
dc.identifier.doi10.1103/PhysRevC.99.034908
dc.identifier.urihttps://www.doi.org/10.1103/PhysRevC.99.034908
dc.identifier.urihttps://www.scopus.com/record/display.uri?eid=2-s2.0-85063283838&origin=resultslist
dc.identifier.urihttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000461904800004
dc.identifier.urihttps://openrepository.mephi.ru/handle/123456789/16708
dc.relation.ispartofPhysical Review C
dc.titleCentrality and transverse momentum dependence of D-0-meson production at mid-rapidity in Au plus Au collisions ats root S-NN=200 GeV
dc.typeArticle
dspace.entity.typePublication
oaire.citation.issue3
oaire.citation.volume99
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