Study on Open Charm Hadron Production and Angular Correlation in High-Energy Nuclear Collisions
Nuclear Science and Techniques(2021)
Fudan University
Abstract
We study the production and angular correlation of charm hadrons in hot and dense matter produced in high-energy nuclear–nuclear collisions within a multiphase transport model (AMPT). By triggering additional charm–anticharm quark pair production in the AMPT, the model describes the $$D^0$$ nuclear modification factor in the low and intermediate $$p_{{\rm T}}$$ regions in Au + Au collisions at $$ \sqrt{s_{{\rm NN}}}=200$$ GeV reasonably well. Further exploration of the $$D^0$$ pair azimuthal angular correlation for different centralities shows clear evolution from low-multiplicity to high-multiplicity events, which is associated with the number of charm quark interactions with medium partons during AMPT transport.
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Key words
Heavy-ion collision,Heavy flavor,Nuclear modification factor,Two-particle correlations
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