Publication: First Measurement of Lambda(c) Baryon Production in Au plus Au Collisions at root s(NN)=200 GeV
Дата
2020
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 on the first measurement of the charmed baryon Lambda(+/-)(c) production at midrapidity (vertical bar y vertical bar < 1) in Au + Au collisions root s(NN) = 200 GeV collected by the STAR experiment at the Relativistic Heavy Ion Collider. The A(c)/D-0 [denoting (Lambda(+)(c) + Lambda(-)(c))/(D-0 + (D) over bar (0))] yield ratio is measured to be 1.08 +/- 0.16 (stat) 0.26 (sys) in the 0%-20% most central Au + Au collisions for the transverse momentum (p(T)) range 3 < p(T) < 6 GeV/c. This is significantly larger than the PYTHIA model calculations for p + p collisions. The measured A(c)/D-0 ratio, as a function of p(T) and collision centrality, is comparable to the baryon-to-meson ratios for light and strange hadrons in Au + Au collisions. Model calculations including coalescence hadronization for charmed baryon and meson formation reproduce the features of our measured Lambda(c)/D-0 ratio.
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First Measurement of Lambda(c) Baryon Production in Au plus Au Collisions at root s(NN)=200 GeV / Adam, J [et al.] // Physical Review Letters. - 2020. - 124. - № 17. - 10.1103/PhysRevLett.124.172301
URI
https://www.doi.org/10.1103/PhysRevLett.124.172301
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https://www.scopus.com/record/display.uri?eid=2-s2.0-85084355470&origin=resultslist
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000529840700004
https://openrepository.mephi.ru/handle/123456789/21666