Azimuthal correlations of prompt D mesons with charged particles in pp and p-Pb collisions at √sNN=5.02 TeV

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초록

The measurement of the azimuthal-correlation function of prompt D mesons with charged particles in pp collisions at root s = 5.02 TeV and p-Pb collisions at root s(NN) = 5.02 TeV with the ALICE detector at the LHC is reported. The D-0, D+, and D*+ mesons, together with their charge conjugates, were reconstructed at midrapidity in the transverse momentum interval 3 < p(T) < 24 GeV/c and correlated with charged particles having p(T) > 0.3 GeV/c and pseudorapidity vertical bar eta vertical bar < 0.8. The properties of the correlation peaks appearing in the near- and away-side regions (for Delta phi approximate to 0 and Delta phi approximate to pi, respectively) were extracted via a fit to the azimuthal correlation functions. The shape of the correlation functions and the near- and away-side peak features are found to be consistent in pp and p-Pb collisions, showing no modifications due to nuclear effectswithin uncertainties. The results are compared with predictions from Monte Carlo simulations performed with the PYTHIA, POWHEG+PYTHIA, HERWIG, and EPOS 3 event generators.

키워드

RANGE ANGULAR-CORRELATIONS2-PARTICLE CORRELATIONSHEAVYMULTIPLICITYFLOW
제목
Azimuthal correlations of prompt D mesons with charged particles in pp and p-Pb collisions at √sNN=5.02 TeV
저자
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DOI
10.1140/epjc/s10052-020-8118-0
발행일
2020-10-22
유형
Article
저널명
European Physical Journal C
80
10