System-size dependence of open-heavy-flavor production in nucleus-nucleus collisions at √s.sub.NN./sub.=200 GeV

0522658 - FZÚ 2020 RIV US eng J - Journal Article
Adare, A. - Afanasiev, S. - Aidala, C. - Kubart, J. - Mašek, L. - Mikeš, P. - Tomášek, Lukáš - Vrba, Václav … Total 380 authors
System-size dependence of open-heavy-flavor production in nucleus-nucleus collisions at √s_NN=200 GeV.
Physical Review C. Roč. 90, č. 3 (2014), s. 1-13, č. článku 034903. ISSN 2469-9985. E-ISSN 2469-9993
Institutional support: RVO:68378271
Keywords : PHENIX * Brookhaven RHIC Coll * 200 GeV-cms/nucleon
OECD category: Particles and field physics
Impact factor: 3.733, year: 2014
Method of publishing: Limited access
https://doi.org/10.1103/physrevc.90.034903

The PHENIX Collaboration at the Relativistic Heavy Ion Collider has measured open-heavy-flavor production in Cu+Cu collisions at sNN=200 GeV through the measurement of electrons at midrapidity that originate from semileptonic decays of charm and bottom hadrons. In peripheral Cu+Cu collisions an enhanced production of electrons is observed relative to p+p collisions scaled by the number of binary collisions. In the transverse momentum range from 1 to 5 GeV/c the nuclear modification factor is RAA∼1.4. As the system size increases to more central Cu+Cu collisions, the enhancement gradually disappears and turns into a suppression. For pT>3 GeV/c, the suppression reaches RAA∼0.8 in the most central collisions. The pT and centrality dependence of RAA in Cu+Cu collisions agree quantitatively with RAA in d+Au and Au+Au collisions, if compared at a similar number of participating nucleons 〈Npart〉.

Permanent Link: http://hdl.handle.net/11104/0307115