Measurement of azimuthal correlations of D mesons with charged particles in pp collisions at %$\sqrt{s}=7%$ TeV and p–Pb collisions at %${\sqrt{{{s}}_{\scriptscriptstyle {\mathrm{NN}}}}}=5.02%$ TeV

Abstract The azimuthal correlations of D mesons with charged particles were measured with the ALICE apparatus in pp collisions at %${\sqrt{s}}=7~\mathrm {TeV}%$ and p–Pb collisions at %${\sqrt{{{s}}_{\scriptscriptstyle {\mathrm{NN}}}}}=5.02~\mathrm {TeV}%$ at the Large Hadron Collider. %$\mathrm{D}^...
Ausführliche Beschreibung

Abstract The azimuthal correlations of D mesons with charged particles were measured with the ALICE apparatus in pp collisions at %${\sqrt{s}}=7~\mathrm {TeV}%$ and p–Pb collisions at %${\sqrt{{{s}}_{\scriptscriptstyle {\mathrm{NN}}}}}=5.02~\mathrm {TeV}%$ at the Large Hadron Collider. %$\mathrm{D}^{0}%$, %${\mathrm{D}^{+}}%$, and %${\mathrm{D}^{*+}}%$ mesons and their charge conjugates with transverse momentum %$3<{p}_{\mathrm{T}}<16~\mathrm {GeV}/c%$ and rapidity in the nucleon-nucleon centre-of-mass system %$|y_\mathrm{cms}|<0.5%$ (pp collisions) and %$-0.96<y_\mathrm{cms}<0.04%$ (p–Pb collisions) were correlated to charged particles with %${p}_{\mathrm{T}}>0.3~\mathrm {GeV}/c%$. The yield of charged particles in the correlation peak induced by the jet containing the D meson and the peak width are compatible within uncertainties in the two collision systems. The data are described within uncertainties by Monte-Carlo simulations based on PYTHIA, POWHEG, and EPOS 3 event generators. Ausführliche Beschreibung