J/$\psi$-hadron correlations at midrapidity in pp collisions at $\sqrt{s}$ = 13 TeV

Abstract

We report on the measurement of inclusive, non-prompt, and prompt J/$\psi$-hadron correlations by the ALICE Collaboration at the CERN Large Hadron Collider in pp collisions at a center-of-mass energy of $13\text{TeV}$. The correlations are studied at midrapidity ($|y|<0.9$) in the transverse momentum ranges $p_{\mathrm{T}}<40\text{GeV}/c$ for the J/$\psi$ and $0.15<p_{\mathrm{T}}<10\text{GeV}/c$ and $|\eta |<0.9$ for the associated hadrons. The measurement is based on minimum bias and high multiplicity data samples corresponding to integrated luminosities of $L_{\text{int}}=34{\text{nb}}^{-1}$ and $L_{\text{int}}=6.9{\text{pb}}^{-1}$, respectively. In addition, two more data samples are employed, requiring, on top of the minimum bias condition, a threshold on the tower energy of $E=4$ and $9\text{GeV}$ in the ALICE electromagnetic calorimeters, which correspond to integrated luminosities of $L_{\text{int}}=0.9{\text{pb}}^{-1}$ and $L_{\text{int}}=8.4{\text{pb}}^{-1}$, respectively. The azimuthally integrated near and away side yields of associated charged hadrons per J/$\psi$ trigger are presented as a function of the J/$\psi$ and associated hadron transverse momentum. The measurements are discussed in comparison to PYTHIA calculations.

28 pages, 6 captioned figures, 2 tables, authors from page 22, figures at http://alice-publications.web.cern.ch/node/11264

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