D meson-hadron angular correlations in pp and p-Pb collisions with ALICE at the LHC

14th International Conference on Strangeness in Quark Matter

Colamaria, Fabio^1

Dipartimento Interateneo di Fisica M. Merlin, Sezione INFN, Bari, Italy^1

关键词: Angular correlations;    Azimuthal correlations;    Energy loss mechanisms;    Fragmentation process;    Heavy ion collision;    Pb-Pb collisions;    Pseudorapidities;    Transverse momenta;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/509/1/012103/pdf
DOI  :  10.1088/1742-6596/509/1/012103

来源: IOP

【 摘 要 】

The comparison of angular correlations between charmed mesons and charged hadrons produced in pp, p-Pb and Pb-Pb collisions can give insight into charm quark energy loss mechanisms in the hot nuclear medium formed in heavy-ion collisions and can help to spot possible modifications of charm quark hadronization induced by the presence of the medium. The analysis of pp and p-Pb data and the comparison with predictions from pQCD calculations, besides constituting the necessary baseline for the interpretation of Pb-Pb results, can provide relevant information on charm production and fragmentation processes. We present a study of azimuthal correlations between D0and D*+mesons and charged hadrons measured by the ALICE experiment in pp collisions at 7 TeV and p-Pb collisions at 5.02 TeV. D mesons were reconstructed from their hadronic decays at central rapidity and in the transverse momentum range 2 T