Heavy-Flavor Measurements by the PHENIX Experiment at RHIC

摘要

In recent years, PHENIX has studied many important observables related toheavy-flavor physics through their leptonic decay measurements including theinvariant yield of electrons from nonphotonic sources, and prompt single muons,both of which are dominated by D and B mesons. Charm and beauty cross-sectionswere measured and compared through single lepton, and lepton-hadroncorrelations in p+p collisions at $\sqrt{s}$ = 200 GeV. Observables forquarkonia production such as invariant yield and polarization were alsomeasured in p+p collisions. In Au+Au collisions, preliminary results for the$R_{AA}$ for single electrons and a 90% CL upper limit for the suppression of$\Upsilon$s were produced. And in $d$+Au collisions, a preliminary $R_{CP}$study for $J/\psi$ production in different centrality ranges was extracted.