Observation of D±s/D0 enhancement in Au + Au collisions at √sNN=200 GeV
We report on the first measurement of charm-strange meson D-s(+/-) production at midrapidity in Au + Au collisions at root s(NN) = 200 GeV from the STAR experiment. The yield ratio between strange (D-s(+/-)) and nonstrange (D-0) open-charm mesons is presented and compared to model calculations. A si...
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| Autori principali: | , , , |
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| Ente Autore: | |
| Natura: | Article (Journal) |
| Lingua: | inglese |
| Pubblicazione: |
26 August 2021
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| In: |
Physical review letters
Year: 2021, Volume: 127, Fascicolo: 9, Pages: 1-8 |
| ISSN: | 1079-7114 |
| DOI: | 10.1103/PhysRevLett.127.092301 |
| Accesso online: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevLett.127.092301 Verlag, lizenzpflichtig, Volltext: https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=DynamicDOIArticle&SrcApp=WOS&KeyAID=10.1103%2FPhysRevLett.127.092301&DestApp=DOI&SrcAppSID=E3VntIhzwrMadul6xAF&SrcJTitle=PHYSICAL+REVIEW+LETTERS&DestDOIRegistrantName=American+Physical+Society 
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| Note sull'autore: | J. Adam, I.M. Deppner, N. Herrmann, P.C. Weidenkaff, [und 357 weitere], (STAR Collaboration) |
| Riassunto: | We report on the first measurement of charm-strange meson D-s(+/-) production at midrapidity in Au + Au collisions at root s(NN) = 200 GeV from the STAR experiment. The yield ratio between strange (D-s(+/-)) and nonstrange (D-0) open-charm mesons is presented and compared to model calculations. A significant enhancement, relative to a PYTHIA simulation of p + p collisions, is observed in the D-s(+/-)/D-0 yield ratio in Au + Au collisions over a large range of collision centralities. Model calculations incorporating abundant strange-quark production in the quark-gluon plasma and coalescence hadronization qualitatively reproduce the data. The transverse-momentum integrated yield ratio of D-s(+/-)/D-0 at midrapidity is consistent with a prediction from a statistical hadronization model with the parameters constrained by the yields of light and strange hadrons measured at the same collision energy. These results suggest that the coalescence of charm quarks with strange quarks in the quark-gluon plasma plays an important role in D-s(+/-)-meson production in heavy-ion collisions. |
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| Descrizione del documento: | Im Titel ist der Ausdruck"+-" hochgestellt, dabei steht das "-" unter dem "+", das "s" ist tiefgestellt, bei D0 ist die "0" hochgestellt Im Titel ist "NN" nach s tiefgestellt, der ganze Ausdruck "s NN" steht unter dem Wurzelsymbol Gesehen am 27.01.2022 |
| Descrizione fisica: | Online Resource |
| ISSN: | 1079-7114 |
| DOI: | 10.1103/PhysRevLett.127.092301 |