Constraining in-medium heavy-quark energy-loss mechanisms via angular correlations between heavy and light mesons

16th International Conference on Strangeness in Quark Matter

Rohrmoser, M.^1 ; Gossiaux, P.-B.^1 ; Gousset, T.^1 ; Aichelin, J.^1

Subatech, 4 rue Alfred Kastler, Nantes

44307, France^1

关键词: Angular correlations;    Elliptic flows;    Heavy quark energy loss;    Individual particles;    Nuclear modification factors;    Quark-gluon plasma;    Radiative interactions;    Two particle correlation;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/779/1/012032/pdf
DOI  :  10.1088/1742-6596/779/1/012032

来源: IOP

【 摘 要 】

Two-particle correlations obtained from parton showers that pass the hot and dense medium of the quark gluon plasma (QGP) can be used as an alternative observable, in addition to the combination of the nuclear modification factor RAAand the elliptic flow v2, to study the mechanisms of in-medium heavy quark energy-loss. In particular, angular correlations represent a promising tool to distinguish between energy loss due to collisional and radiative interactions of jet and medium particles. To this end, parton cascades were created in Monte-Carlo simulations, where individual particles can undergo both parton splitting as well as an effective jet-medium interaction. A first model simulates the effects of induced radiations on parton cascades. Its consequences on angular correlations of partons within jets were studied in detail, with particular focus on angular broadening. The results can be compared to a second model that effectively describes elastic scatterings of jet and medium particles.